Detector Constants

Primary Constants

Derived Constants

Primary Category globalMatPrim

Overview:  Materials not specific to a single subsystem.
 
NameValueDescription
wallMaterial C Wall material
vacuumMat Vacuum Need vacuum for some 'solids'
blanketMat blanket Material for thermal blanket
spacecraftMat Alsc Material for spacecraft
solarPanelMat Si Material for solar panels
solarCoreMat Al Material for solar panel core
solarRodMat Al Material for solar panel connecting rods

 

Primary Category globalCountPrim

Overview:  Counts of objects more inclusive than a single subsystem; also other integer constants used in identifiers.
 
NameValueDescription
xNum 4 Number of towers in x.
yNum 1 Number of towers in y.
eTowerCAL 0 Id field value for CAL (within towers)
eTowerTKR 1 Id field value for TKR (within towers)
eTowerGrid 2 Id field value for grid (within towers)
eLATTowers 0 id field for towers (within LAT)
eLATACD 1 id field for ACD (within LAT)
eLATGrid 2 id field for pieces of grid not within tower envelopes
eLATBlanket 3 id field value for pieces of blanket
eLATSpacecraft 4 id field value for spacecraft
eLATPanelYNeg 5 id field value for solar panel on Y- side
eLATPanelYPos 6 id field value for solar panel on Y+ side
eSolarPanelSi 0 id field value for Si part of a solar panel
eSolarPanelCore 1 id field value for core part of a solar panel
eSolarPanelRod 2 id field value for rod part of a solar panel
eMeasureX 0 id field used for TKR Si and CAL layers
eMeasureY 1 id field used for TKR Si and CAL layers
eCenter 0 one of seven possible values for fBorderCmp id field
eRight 1 one of seven possible values for fBorderCmp id field
eTop 2 one of seven possible values for fBorderCmp id field
eLeft 3 one of seven possible values for fBorderCmp id field
eBottom 4 one of seven possible values for fBorderCmp id field
eFarTop 5 one of seven possible values for fBorderCmp id field
eFarBottom 6 one of seven possible values for fBorderCmp id field
eDTypeNone 0 Possible (in fact, default) value for detectorType attribute of logical volume
eDTypeTKRSi 1 Tracker Si detector type
eDTypeCALXtal 2 CAL CsI crystal detector type
eDTypeCALDiode 3 CAL diode detector type
eDTypeACDTile 4 ACD tile detector type
eDTypeACDRibbon 5 ACD ribbon detector type

 

Primary Category globalDimPrim

Overview:  Fundamental dimensions and offsets for objects not associated with any single subsystem.
 
NameValueDescription
calTrackerGap 26.9 mm Spacing between tracker and calorimeter stay-clear envelopes
ACDTKRStayClear 25.8 mm Space between ACD side support walls and towers
wallGap 1.5 mm gap between modules
towerPitch 374.5 mm Distance between centers of towers (X or Y) [from LAT-DS-00123-2]
globalOffset_dz 0 mm as a test, to move entire detector in z. Zero means no offset, of course!

 

Primary Category CALMatPrim

Overview:  Materials used in the calorimeter
 
NameValueDescription
crystalMat CsI Crystal Material
diodeMat Si Diode Material
CALCellMat CarbonFiber **NEW** CAL composite cell material, also used for top and bottom plates
CALCloseoutMat Al Material for CAL side closeout walls
CALOuterWallMat Al material for CAL outer side wall components
CALSidePCBMat Polystyrene material for CAL PCB side wall components -- need real material defined!
CALFrameMat Al Material for CAL frame
CALMountTabMat Al Material for CAL mount tabs
CALRibMat Al Material for CAL (bottom) ribs
CALCylSupportMat Al Material for CAL cylindrical supports.
CALCellWallMat C Material for cell walls, reinforcement
CALWrapMat Polystyrene Wrap material for CsI logs. Value is temporary until the correct material has been defined in materials.xml.
CALGridMat Al Material for CAL grid [obsolete??]
CALFlangeMat Al50 Material for CAL flange [obsolete??]

 

Primary Category CALCountPrim

Overview:  Counts for replicated objects in the Calorimeter; other integer constants used to keep track of identifiers.
 
NameValueDescription
CALnLayer 8 Number of layers of CAL CsI crystals
nCsIPerLayer 12 Number of crystals per layer within a tower
nCsISeg 12 Number of segments in which to divide crystals for integrating hits
CALnBottomRibs 3 Number of ribs in bottom frame grid in one direction (X or Y)
eXtal 0 idField value for CAL cell cmp field (the CsI crystal)
eDiodeMSmall 1 idField value for CAL cell cmp field diode(minus, small)
eDiodePSmall 2 idField value for CAL cell cmp field diode(plus, small)
eDiodeMLarge 3 idField value for CAL cell cmp field diode(minus, large)
eDiodePLarge 4 idField value for CAL cell cmp diode(plus, large)
eCellRight 5 one of 4 idField values for CAL cell wall in fCALCellCmp field.
eCellTop 6 one of 4 idField values for CAL cell wall in fCALCellCmp field.
eCellLeft 7 one of 4 idField values for CAL cell wall in fCALCellCmp field.
eCellBot 8 one of 4 idField values for CAL cell wall in fCALCellCmp field.
eWrapRight 9 one of 4 idField values for CAL wrap in fCALCellCmp field.
eWrapTop 10 one of 4 idField values for CAL wrap in fCALCellCmp field.
eWrapLeft 11 one of 4 idField values for CAL wrap in fCALCellCmp field.
eWrapBot 12 one of 4 idField values for CAL wrap in fCALCellCmp field.

 

Primary Category CALDimPrim

Overview:  Fundamental dimensions of solids and offsets for the Calorimeter
 
NameValueDescription
CALTransverseStayClear 364 mm Transverse dimension of CAL Stay Clear envelope from LAT-DS-00038-2
CALVertStayClear 224.3 mm Z-dimension of CAL Stay Clear envelope from LAT-DS-00038-2
diodeX 0.3 mm Depletion depth of diode Si
diodeLY 14.5 mm Width of large diode Si
diodeSY 2.4 mm Width of small diode Si
diodeZ 10.5 mm Height of diode Si
CsILength 326 mm Length of a CsI crystal as of 30May02
CsIWidth 26.7 mm (Transverse) width of a CsI crytal. Changed from 26.714mm on 18 June, 2003.
CsIHeight 19.9 mm Height of a CsI crystal
diodeZOffset 0.55 mm Z offset of diodes relative to crystal. Changed from .9 mm 18 June, 2003.
diodeLYOffset -2.6 mm Y (transverse) offset of large diode relative to crystal. Changed from -2.55 mm on 18 June, 2003
diodeSYOffset 8.025 mm Y offset of small diode relative to crystal. Changed from 8.6 mm on 18 June, 2003.
cellVertPitch 21.35 mm Vertical pitch of CsI and cells
cellHorPitch 27.84 mm Horizontal pitch of CsI and cells. Changed from 27.844 mm on 18 June, 2003.
CsIWrapThick 0.0065 mm Thickness of crystal wrap (reflector VM2000), as of 18 June, 2003.
cellVertWallThick 0.45 mm Thickness of composite cell vertical walls (C) [only. Before 18 June, 2003, also includedreflector]
cellHorWallThick 0.85 mm Thickness of composite cell horizontal walls (C)
cellSideWallThick 1.685 mm Thickness of vertical cell wall for outermost cells in each layer. New constant, first defined 18 June, 2003
cellTopWallThick 2.43 mm Thickness of horizontal cell wall above top layer. New constant, first defined 18 June 2003.
cellBottomWallThick 4.43 mm Thickness of horizontal cell wall below bottom layer. New constant, first defined 18 June 2003.
CALSideWallThick 12 mm Horizontal thickness of side compartment with electronics. Changed from 11.6 mm as of 18 June, 2003.
CALGridFrameGap 1.5 mm Minimum gap between top of CAL (frame) and bottom of grid flange. 3 Sept. 2003
CALSideWallInnerThick 1 mm Horizontal thickness of inner wall within (largely hollow) side wall
CALSideWallOuterThick 0.8 mm Horizontal thickness of outer wall within (largely hollow) side wall. Changed from 1.0 mm as of 18 june, 2003.
CALSideWallPCBThick 1.6 mm Horizontal thickness of PCB within (largely hollow) side wall
CALInnerWallPCBGap 3.7 mm Gap between CAL closeout and PCB layer of side wall
CALModuleWidth 363 mm Horizontal, face-to-face dimension of CAL module (presumably both X and Y)
CALModuleHeight 222 mm Vertical, top-to-bottom dimension of CAL module. Changed from 223.8 mm as of 18 June, 2003.
CALCylSupportDiameter 10 mm Diameter of cylindrical supports (Al)
CALCylSupportCellDelta 4 Number of cells between adjacent (in the same layer) cylindrical supports
CALFrameSideThick 8 mm Thickness of CAL frame sides
CALTopFrameZ 16 mm Thickness of top of CAL frame (Al)
CALBottomFrameZ 14 mm Thickness of bottom of CAL frame (Al) Changed 4 Sept. 2003 from 16.0 (ref: Sasha)
CALTopFrameWidth 16.7 mm Width of top picture frame. Changed from 22 to 16.7 19 June 2003.(Al)
CALBottomFrameWidth 35 mm Width of bottom picture frame (Al)
CALTopPlateZ 2.43 mm Vertical thickness of CAL top plate composite. Changed from 2.0 mm as of 18 June, 2003.
CALBottomPlateZ 4.43 mm Vertical thickness of CAL bottom plate composite. Changed from 4.0 mm as of 18 June, 2003.
CALBottomRibPitch 73 mm Pitch of bottom plate ribs (Al)
CALBottomRibWidth 10 mm Width of bottom plate ribs (Al)
CALBottomRibThick 12 mm Thickness of bottom plate ribs (Al)
CALMountTabThick 15 mm Thickness of CAL mounting tabs, CAL to grid (Al)
CALMountTabWidth 12 mm Width of CAL mounting tabs
CALCloseoutLen 338 mm Transverse length of innermost components of CAL side wall, equal to gap between opposing closeout walls. Added as primary 24 June 2003
CALTopFrameUpperWidth 13.2 mm Frame width for upper of two top frame pieces. 19 June 2003
CALTopFrameLowerWidth 7.5 mm Frame width for lower of two top frame pieces. 19 June 2003
CALTopFrameLowerZ 10 mm Frame height for lower of two top frame pieces. 19 June 2003

 

Primary Category CALResponse

Overview:  Fundamental parameters concerning response and configuration of CAL electronics and crystals.
 
NameValueDescription
cal.maxResponse0 200 MeV Max response for readout channel 0
cal.maxResponse1 1600 MeV Max response for readout channel 1
cal.maxResponse2 12800 MeV Max response for readout channel 2
cal.maxResponse3 102400 MeV Max response for readout channel 3
cal.noiseSmall 2000 Noise (in electrons) for small diode
cal.noiseLarge 2000 Noise (in electrons) for large diode
cal.ePerMeVSmall 833 Electrons per MeV for small diode
cal.ePerMevLarge 5000 Electrons per MeV for large diode
cal.pedestal 100 Pedestal in adc units
cal.maxAdcValue 4095 Max possible adc value
cal.zeroSuppressEnergy 1 MeV Zero suppression threshold
cal.lightAtt 0.65 Light attenuation in CsI crystal (= far/near )

 

Primary Category TKRMatPrim

Overview:  Materials used in the TKR description
 
NameValueDescription
convMat W material used in tracker conversion for regular trays
convSupMat W_alloy material used in tracker conversion for super-GLAST trays, an alloy of tungsten, nickel and iron.
TKRDetMat Si Material of tracker detector elements
coreRegMat Al_1lb material used in tracker tray core for non superGLAST trays
coreSupMat Al_3lb material used in tracker tray core for superGLAST trays
TKRCloseoutMat C_closeout material for closeout pieces
TKRTopFaceMat Tray_top_face Composite representing top face sheet, bias board, and surrouding glue
TKRBotFaceMat Tray_bot_face Composite representing bottom face sheet + glue
TKRBotBiasMat Tray_bot_bias Composite for bias board + surrounding glue
TKRWallMat Tkr_wall Composite for tracker walls
TKRMCMMat Tkr_MCM_board Composite for tracker MCM boards
TKRFaceMat C Material of tracker face sheet **OBSOLETE**
coreMat FOAM05 material used in tracker tray core **OBSOLETE**

 

Primary Category TKRCountPrim

Overview:  Counts of objects and other quantities used to form identifiers within the tracker.
 
NameValueDescription
stripPerWafer 384 Number of strips per wafer
nWaferAcross 4 Wafers for a layer within a tower form a square array of this dimension
numTrays 19 number of trays (one more than number of x-y planes)
numNoCnvTrays 3 number of trays with no converter. These trays have the lowest tray number
numSuperGlast 4 number of trays with super-Glast thickness converter. These are immediately above the no-lead trays
nFeChips 6 Number of front-end readout strips per die (determines number of Si strips)
eTKRSiBottom 0 Field value for Si field (bottom of tray)
eTKRSiTop 1 Field value for Si field (top of tray)
eTKRCnv 2 Field value for converter
eTKRCoreClose 3 Field value for core-closeout layer
eTKRBotFace 4 Field value for bottom face sheet and surrounding inactive materials
eTKRTopFace 5 Field value for top face sheet and surrounding inactive materials
eTKRBias 6 Field value for bias board.

 

Primary Category TKRDimPrim

Overview:  Fundamental solid dimensions and offsets within the Tracker.
 
NameValueDescription
TKRTransverseStayClear 372 mm Tranverse dimension of TKR Stay Clear envelope from LAT-DS-00038-2
TKRVertStayClear 640 mm Z dimension of TKR Stay Clear envelope from LAT-DS-00038-2
SiThick 0.4 mm Si thickness
coreThick 27.92 mm Thickness of core material in all trays except the bottom and top
coreThickBot 36.535 mm Core thickness for top tray (20Jun03)
coreThickTop 33.995 mm Core thickness for top tray (20Jun03)
TKRCloseoutWidth 5 mm Width of closeout walls. Last modified 2aug02
glueSiThick 0.15 mm Thickness of glue between Si and bias plane
glueCoreThick 0.075 mm Thickness of glue between core (or closeout) and something else (15oct01)
glueDefThick 0.1 mm Default glue thickness, when neither Si nor core is involved (15oct01)
convThickReg 0.105 mm Thickness of conversion material in "regular" layers in mm
convThickSup 0.723 mm Thickness of conversion material in super-GLAST trays in mm (as of 15 oct 2001)
faceThick 0.2 mm Face sheet thickness for all but super-glast tray and bottom tray (as of 15oct01)
faceSupThick 0.29 mm Face sheet thickness for super-glast trays and bottom tray (15oct01)
biasPlaneThick 0.1 mm Thickness of bias plane (15oct01)
tray0Gap 2.05 mm Gap above bottom tray modified 21jun03
trayNoCnvGap 2.13 mm Gap above non-bottom no-converter trays
traySuperGap 2.127 mm Gap above super-glast trays
trayRegGap 2.125 mm Gap above regular trays. Last modified 2aug02
TKRTraysTotalZ 627.465 mm Height of a tracker tower. (From spreadsheet, 21jun03
TKRFootZ 4.5 mm Height of foot between bottom of bottom tray and grid
ssdGap 0.025 mm gap between Si dies within a ladder (15oct01)
SiWaferSide 89.5 mm Length and width of Si wafer
SiWaferActiveSide 87.552 mm Length and width of active area on a wafer
faceWidth 360.6 mm X and y width of face sheet (15oct01)
TKRElectGap 4.2 mm Distance between wall and panel edge (each edge)
ladderGap 0.2 mm gap between ladders
MCMHeight 23 mm Height of tracker MCM boards
MCMThick 1.1 mm Thickness of tracker MCM boards
MCMGap 0.1 mm Gap between MCM board and closeout
TKRWallThick 1.5 mm Thickness of tracker walls
TKRWallLength 371.45 mm Outer dimension of square formed by tracker walls (Z cross-section) Last modified 2aug02

 

Primary Category ACDMatPrim

Overview:  Materials used in the ACD description
 
NameValueDescription
tileMat Polystyrene material used for tiles
ACDSupportCoreMat FOAM05 Material used in support. Still need input from engineers about this.
ACDSupportFaceMat Be Material used in ACD support. Still need input from engineers about this.
ribbonMat Polystyrene Material for scintillating ribbon
ACDScrewMat IronScrew Material for screws in tiles

 

Primary Category ACDCountPrim

Overview:  Counts of objects and other quantities used to form identifiers within the ACD.
 
NameValueDescription
numXTopTiles 5 Number of tiles across top in x direction
numYTopTiles 5 Number of tiles across top in y direction
numSideTapes 4 Number of gaps (long axis = Z) to be covered by scintillating tape on each side o the ACD. Should this be derived from #tiles in some side row?
numSideRows 4 Number of rows of tiles along the sides
ACDLongRowMin 0 Row number of first long row
ACDLongRowMax 2 Row number of last long row
numPerSideRowShort 1 Number of tiles in bottom side
numPerSideRowLong 5 Number of tiles in some (currently top 3) side rows
ACDNumScrewSq 6 Number of arrays of 4 screws in a side bottom tile
eACDTopFace 0 Top of ACD
eACDXNegFace 1 Neg. x face
eACDYNegFace 2 Neg. y face
eACDXPosFace 3 Pos. x face
eACDYPosFace 4 Pos. y face
eACDTile 40 Value for id field fACDCmp used to distinguish tiles, ribbons and support
eACDRibbon 41 Value for id field fACDCmp used to distinguish tiles, ribbons and support
eACDSupport 42 Value for id field fACDCmp used to distinguish support from tiles, ribbons

 

Primary Category ACDDimPrim

Overview:  Fundamental solid dimensions and offsets within the ACD.
 
NameValueDescription
ACDTransOuterSC 1796 mm Maximum transverse outer extent of ACD (from LAT-DS-00038)
ACDTransInnerSC 1515.5 mm Minimum transverse inner envelope for ACD sides (from LAT-DS-00038)
ACDTransInnerSCflange 1574 mm Minimum transverse inner envelope for lower part of ACD sides (from LAT-DS-00038)
ACDVertSC 1015 mm Max. delta Z from top to bottom of ACD (from LAT-DS-00038)
topTileXEdge_l 329.667 mm X dimension of outermost (in X) top tiles, i.e., columns 0 and 4. Modified November 05 from new (2005) 3-d model
topTileXMid_l 332 mm X dimension of tiles in columns 1 and 3. Modified Nov '05 from 3-d model of 2005.
topTileXCentral_l 332 mm X dimension of central top tiles (column 2) Modified Nov '05 from 3-d model of 2005.
topTileYEdge_l 355 mm Y dimension of outermost (in y) top tiles, i.e., rows 0 and 4. Modified Nov '05 from 3-d model of 2005.
topTileYMid_l 344 mm Y dimension of tiles in rows 1 and 3. Modified Nov '05 from 3-d model of 2005.
topTileYCentral_l 344 mm Y dimension of central top tiles (row 2) Modified Nov '05 from 3-d model of 2005.
tileThickness 10 mm Thickness of ACD tiles *except* for top center tiles
tileCenterThickness 12 mm Thickness of ACD tiles, middle column of top only
topTileGap 2 mm Worst-case (most thermal expansion) transverse gap between tiles on the top. Revised Oct. 2002 to 3.5. Revised again July '03. Nov. 2005: gap occurs in X (so between adjacent columns) use number from 3-d model of 2005.
topOverlap 20 mm Width of overlap of overlapped top tiles (changed from 10.0, as of Oct. 2002; changed from 15 in July '03. Get 20 from 3-d model (6-23-03)) Still correct as of Nov. 05
topTileOuterZGap 2.6 mm Gap in Z between top tile in row. 0 (resp. 4) and its neighbor in row. 1 (resp. 3). Last revised Nov. 2005 (swap col for row; value now 2.6)
topTileInnerZGap 2.6 mm Gap in Z between top tile in row. 3 and its neighbor in rows. 2 and 4. Last revised Nov. 2005 (swap col for row; value now 2.6)
sideTileR0_dt 839.97 mm Transverse displacement of top row of side tiles, last revised Nov 2005 from new 3-d model
topTileBentZ 50 mm Z dimension for extra box stuck onto the bottom of top tiles in rows 0 and 4 to simulate a bent tile.
sideTileHeight0 366 mm Height of top row of side tiles. From 3-d model (6-23-03)
sideTileHeight1 199.46 mm Height of 2nd row of side tiles as simulated (no slant; no gaps or overlaps between rows).
sideTileHeight2 150 mm Height of 3rd row of side tiles as simulated (no slant; no gaps or overlaps between rows.
sideTileHeight3 135.35 mm Height of 4th row of side tiles as simulated (no overlaps or gaps). True height from 3-d model 6-23-03 would be 155
sideOverlap 30 mm Distance side tiles extend above topACD tile surface --- used for positioning. (7/28/03) 3-d model 6-23-03 essentially agrees with this. (11/2205) So does latest 3-d model
sideVerticalGap 0 mm Vertical gap between (rows of?) side tiles
sideHorizontalGap 2 mm Horizontal gap at the corners between adjacent columns of side tiles (July 03; revised according to 3-d model 6-23-03, from old value of 3.0) (11/22/05) 2.0 still correct.
ACDTileScale 0.9968 Scale factor used to transform tile dimensions to operating temperature: 5*10**(-5) by 40 degrees, from Alex. Added July 2005
ACDHoleRad 1.59 mm Radius of hole in tile. Added July 2005
ACDScrewRad 1.4 mm Radius of screw in tile. Added July 2005
ACDScrewLen 25.4 mm Length of screw in tile. Added July 2005
ACDScrewFromEdge 50 mm Distance of (most) screws from edge of tile
ACDScrewCenterDiff 50 mm Distance between centers of screws in a screw square (in bottom side tiles)
ACDSideCoreThickness 25.4254 mm Thickness (short transverse dimension) of side support structure for ACD, not including face sheets. As of Nov. 05
ACDTopCoreThickness 50.8254 mm Thickness of top support structure for ACD, not including face sheets. As of Nov., 2005
ACDTopCoreTrans 1532.72 mm X and Y dimensions. From 3-d model, Nov. 05
ACDSideCoreZ 674.11 mm Height of ACD side core from 3-d model, Nov. 05
ACDSideCoreTrans 1558.78 mm Long transverse dimension (x or y) of ACD side core. From 3-d model, Nov. 05
ACDFaceThickness 0.508 mm Thickness of face sheets used in ACD support structure, both top and sides. As of Nov. 05
ACDTopSupport_dz 683 mm Displacement of top support w.r.t. Ritz origin. From 3-d model (Nov 05)
ACDSideSupport_dt 779.9 mm Transverse displacement of side support, from 3-d model 6-23-03, confirmed for Nov 05
ACDSideSupport_dz 371.16 mm Z-displacement of side support, from 3-d model Nov 05
ACDSideSupport_dDovetail 13.03 mm Small offset needed for sides to dovetail around top support, from 3-d model (Nov 05
PMTFiberGap 41.6 mm Minimum distance between outer edge of side support structure and inner edge of innermost side tile. Side ribbons (as well as PMT fibers) may go in this gap
topTileSupportStandoff 25.4 mm Minimum distance between lowest top tiles and top of ACD support. Ribbons are placed within this gap. Not actually used.
dovetailGap 3.3 mm Distance between adjacent ACD sides of tiles (11/22/05) Still 3.3
ACDSideTopTileGap 3.3 mm Transverse distance between top edge tile and nearest side tile. From 3-d model 6-23-03. (11/22/05) Still 3.3
ACDTileMaxZ 775 mm Very top of top tiles in columns 0 and 4, from 3-d model Nov. 05
ACDTopSupportMaxZ 708.918 mm Very top of top of ACD support structure (including face sheet) under top tiles, from 3-d model Nov. 05
ribbonWidth 14 mm Width of scintillating ribbon (from 3-d model 6-23-03, still ok Nov. 05)
ribbonThickness 5 mm Thickness of scintillating ribbon, confirmed 30 July 2003, Nov. 05
ribbonGap 1.5 mm Distance between ribbon and the adjacent top tile, as of Oct. 2002. As of new 3-d model 6-23-03 old value of 2.5 caused overlap. With no official blessing, try something smaller. According to (old) model there is no gap between ribbon and topmost tiles. As of Nov. 05, gap appears to be about 1.5 or 2 mm
ribbonOverlap 15 mm Amount X ribbon segment overshoots tile edge of tile it's under. (This is a figment of the simulated model. Real ribbons don't come in disconnected segments.)
xRibbonOuter_dx 501.8 mm X displacement of outer X-ribbon (contained in YZ plane): ribbon #3 (Nov 05)
xRibbonInner_dx 166 mm X displacement for X-ribbon #2 (Nov 05)
yRibbonOuter_dy 502 mm Y displacement of outer Y-ribbon (contained in XZ plane): ribbon #3 (Nov 05)
yRibbonInner_dy 168.4 mm Y displacement for Y-ribbon #2 (Nov 05)
yRibbonTopAbs_dz 724 mm Z displacement (w.r.t. origin) of top segment of Y ribbons (the flat ones) as of Nov. 05

 

Primary Category ACDResponse

Overview:  Fundamental parameters concerning response and configuration of ACD electronics
 
NameValueDescription
acd.efficiency 0.9997 Readout effiency of ACD tiles
acd.vetoThreshold 0.4 MeV Threshold, calculated as 0.2 * MIP

 

Primary Category NADDimPrim

Overview:  Fundametal dimensions of solids and offset for NAD (Not A Detector) components, like the grid.
 
NameValueDescription
NADGridWebInner 8 mm Full thickness of grid between towers (not half-width) Verified against LAT-DS-01579 on 5 May 2004.
NADGridWebOuter 13 mm Thickness of grid on outside towers. Verified against LAT-DS-01579 on 5 May 2004. Correct for bulk of web; lower bound for bottom. Bottom of grid has variable thickness of up to 42.24 mm.
NADGridWebZ 210.8 mm Height of grid web. Verified against LAT-DS-01579 on 5 May 2004.
NADGridWebCutout 366.5 mm Cut-outs for calorimeters. Verified against LAT-DS-01579 on 5 May 2004.
NADGridFlangeZ 25.4 mm Height of grid flange. Verified against LAT-DS-01579 on 5 May 2004.
NADGridFlangeCutout 346.6 mm Cutouts in the flange. Verified against LAT-DS-01579 on 5 May 2004.
NADGridFlangeInner 27.9 mm Thickness of inner parts of grid flange. Verified against LAT-DS-01579 on 5 May 2004.
NADGridFlangeOverhang 25 mm Flange overhangs web. Verified against LAT-DS-01579 on 5 May 2004.
NADBlanketTopThick 30.22 mm Blanket thickness as of May, 2006. See https://confluence.slac.stanford.edu/display/ACD/Thermal+Blanket
NADBlanketSideThick 30.8 mm Blanket thickness as of May, 2006. See https://confluence.slac.stanford.edu/display/ACD/Thermal+Blanket
NADCrownToTile 2.26 mm Distance from top of side tile to bottom of crown of blanket (room temperature). May, 2006.
NADBlanketToTopTile 6.89 mm Distance from top tile to bottom of blanket. May, 2006
NADCrownWidth 101.6 mm Transverse distance across crown. May, 2006
NADCrownDepth 31.75 mm Z-distance from top of crown to top of lower, central part of blanket. May, 2006
NADBlanketTopTrans 1790.7 mm Max transverse distance across top blanket, from outside of crown. From as-build document ACD-RPT-000394 RevA
NADBlanketSideZ 918 mm Z-dimension of blanket sides, from https://confluence.slac.stanford.edu/display/ACD/Thermal+Blanket, May, 2006
NADSpacecraftZ 1400 mm Height of spacecraft
NADSpacecraftR 817.775 mm Radius of spacecraft (800.0 * sqrt(1/(0.957)) to make mass equal to about 1000 kg
NADSpacecraftGap 0 mm Gap between LAT and spacecraft
NADSolarRodLength 1000 mm Length of connecting rods for solar panels
NADSolarRodR 50 mm Radius of connecting rods for solar panels
NADSolarPLength 5000 mm Solar panel length (extending out from spacecraft)
NADSolarPWidth 1500 mm Solar panel width
NADSolarSiThick 4 mm Solar panel thickness
NADSolarCoreThick 2 mm Solar panel thickness

 

Primary Category Trigger

Overview:  Fundamental parameters concerning trigger (so far appears to be just parameters for CAL)
 
NameValueDescription
trigger.crystalThreshold 100 MeV Not used but expected by Calorimeter (let's get rid of it!! ed.)
trigger.LOCALthreshold 100 MeV single crystal threshold for low cal trigger
trigger.HICALthreshold 1000 MeV single crystal threshold for hi cal trigger

 

Primary Category cu06ACDDimPrim

Overview:  Extra primary constants needed for cu06 ACD description
 
NameValueDescription
ACDTileMHeight 170 mm ACD medium tile short dim.
ACDTileMTrans 332 mm ACD medium tile long dim.
ACDTileSHeight 166 mm ACD small tile short dim.
ACDTileSTrans 170 mm ACD small tile long dim.
ACDTopTileStandoff 7 mm gap between top tile and front face of container, from ACD_tiles_Final_position.pdf
ACDSideTileStandoffSm 10 mm gap between side tiles and -X face of container, rows 1-3,from ACD_tiles_final_position.pdf
ACDSideTileStandoffLg 35 mm gap between side tile and -X face of container, row 0, from ACD_tiles_final_position.pdf
ACDOverlapRow0_1 30 mm Taken from ACD_tiles_Final_position.pdf
ACDTile_000_dy 0 mm top ACD tile absolute y

 

Primary Category cu06ContainerPrim

Overview:  Extra primary constants needed for cu06 container description
 
NameValueDescription
ISCMat Al Material for cu06 inner container
ISCThin 2 mm Thickness of thinner cu06 inner container panels
ISCThick 4 mm Thickness of thicker cu06 inner container panels
ISCLateral 451 mm Y-dimension of X- and Z- faces of cu06 inner container. From Eddie's labeled photo
ISCTkrYFace_x 840 mm X-dimension of Y-face for tracker part of innner container. This is a third guess!! From Eddie's labeled photo.
ISCTkrYFace_z 660 mm Z-dimension of Y-face for tracker part of innner container. From Eddie's labeled photo
ISCCalYFace_x 1664 mm X-dimension of Y-face for cals part of inner container. From Eddie's labeled photo
ISCCalYFace_z 446 mm Z-dimension of Y-face for Z-dimension of Y-face for cals part of inner container. From Eddie's labeled photo

 

Derived Category derCAL

Overview:  Derived constants specific to CAL.
 
NameValueDescription
CsISegLength 27.1667 mm length along measurement dimension of a CsI segment
nCsISegM1 11 upper limit for id field keeping track of segment number
CALMaxLayer 7 upper limit on Cal layer idfield value
diodePosXOffset 163.15 mm X-offset of a diode relative to the center of the CsI crystal
diodeNegXOffset -163.15 mm X-offset of diode on negative end of a crystal
cellVertWallHalfThick 0.225 mm convenience
cellHorWallHalfThick 0.425 mm convenience
CsIEnvX 326.6 mm Long dimension of envelope containing a CsI crystal and its diodes
CsIEnvY 27.84 mm Transverse dimension of envelope containing a CsI crystal and its diodes
CsIEnvZ 21.35 mm Height of the envelope containing a CsI crystal and its diodes
cellIntWallZ 20.5 mm Height of vertical wall, up to but not including horizontal walls
CsIWrapTranvLen 26.713 mm Extent (in Y or X, perp. to main axis of crystal) of crystal wrap
cellHorWall_dz 10.4625 mm Z position rel. to cell of upper horiz. wall
cellHorWall_dzn -10.4625 mm Z position rel. to cell of lower horiz. wall
cellVertWall_dy 13.8075 mm Y displacement rel. to cell of vertical cell wall (here Y means perp. to height and length directions)
cellVertWall_dyn -13.8075 mm Neg. of Y displacement rel. to cell of vertical cell wall (here Y means perp. to height and length directions)
wrapHorWall_dz 9.95325 mm Z positionrel. to cell of upper crystal wrap box
wrapHorWall_dzn -9.95325 mm Z position rel. to cell of lower crystal wrap box
wrapVertWall_dy 13.3532 mm Z position rel. to cell of +y side crystal wrap box
wrapVertWall_dyn -13.3532 mm Z position rel. to cell of -y side crystal wrap box
cellTopExtraThick 2.005 mm Extra thickness of cell material on top layer, beyond what the standard layer has
cellBottomExtraThick 4.005 mm Extra thickness of cell material on bottom layer, beyond what the standard layer has
cellSideExtraThick 1.46 mm Extra thickness of cell material on side of outermost crystal, beyond interior crystals have.
CALLayerNonmeasWidth 337 mm Width of a layer in non-meas direction. Logs plus two bits of extra carbon cell material on the sides
CALLayerTrans 337 mm Transverse dimension of a CAL layer: max(CsiEnvX, nEltPerlayer*cellHorPitch)
CALLayersTotalZ 176.81 mm Includes cal layers and inter-layer walls but not frame, grid, etc. (may be superseded by info from Eric)
CALTopFrameLowerLen 338 mm Outer dimension of lower of two top frame pieces
CALTopFrameUpperZ 6 mm Height of top frame is derived from total frame Z and lower height, which are primary
CALTopFrameUpperLen 350.6 mm Outer dimension of upper of two top frame pieces
CALTopFrameLowerCutoutLen 323 mm Length of the side of the square vacuum cutout for lower of two top frame pieces.
CALTopFrameUpperCutoutLen 324.2 mm Length of the side of the square vacuum cutout for upper of two top frame pieces.
CALFrameWidth 353 mm transverse dimension for cal frame (one tower)
CALBottomFrameShort 293 mm Length of shorter pieces in CAL bottom frame
CALBottomFrame_dt 164 mm Transverse displacement of bottom frame pieces
CALBottomFrame_dtn -164 mm Negative transverse displacement of bottom frame pieces
CALFramedLayersZ 206.81 mm Z dimension of CsI layers plus frame. Note This constant may need updating if description of CAL changes! Constant instituted 30 April 2003
CALBottomFrame_dz -90.15 mm Offset of bottom frame relative to stay-clear box. Later will probably have to locate different frame pieces separately.
CALLayers_dz 5.255 mm Offset of vol. containing layers relative to stay-clear box. Upper frame is at top of box, followed by CALLayers. Constant instituted 30 April 2003. Modified 20 June when CALLayers was redefined to exclude frame. Modified 3 Sept 2003 to align CAL bottom frame with bottom of grid web
CALTopFrameLower_dz 98.66 mm Displacement for lower of 2 top frame pieces within stay-clear
CALTopFrameUpper_dz 106.66 mm Displacement for upper of 2 top frame pieces within stay-clear
CALOuterWallPCBGap 4.9 mm Gap between CAL outer side wall Al component and PCB layer. Comparable gap on other side is primary constant.
CALCloseoutGap 0.5 mm Distance from closeout (inner part of CAL side wall) and carbon fiber cell about crystals. As of 24 June 2003, derived
CALSidePCBLen 347.4 mm Transverse length of PCB component of CAL side wall
CALSideOuterLen 360.4 mm Transverse length of outer Al component of CAL side wall
CALCloseoutZ 186.81 mm Height of CAL closeout (and, with current model, also PCB. **To be revised. For now (20 June 2003) have shortened closeout pieces to only run down to top of bottom frame.**
CALSidePCBZ 186.81 mm Height of CAL side wall PCB. **To be revised. For now (20 June 2003) have shortened side PCB pieces to only run down to top of bottom frame.**
CALSideOuterZ 192.81 mm Height of outermost component of CAL side wall **To be revised. For now (20 June 2003) have shortened side pieces to only run down to top of bottom frame.**
CALCloseout_dt 169.5 mm Transverse offset of CAL closeout walls
CALCloseout_dtn -169.5 mm Transverse offset of negative CAL closeout walls
CALCloseout_dz 10.255 mm Vertical offset of CAL side closeouts
CALSidePCB_dt 174.5 mm Transverse offset of CAL side PCB walls
CALSidePCB_dtn -174.5 mm Transverse offset for negative CAL side PCB walls
CALSidePCB_dz 10.255 mm Vertical offset of CAL side PCB
CALSideOuter_dt 180.6 mm Transverse offset of outer Al component of CAL side walls
CALSideOuter_dtn -180.6 mm Transverse offset of negative outer Al component of CAL side walls
CALSideOuter_dz 13.255 mm Vertical offset of outer Al component of CAL side walls. Assume top of it lines up with top of frame.
eBottomFrame 18 For use in identifiers
eTopFrame 19 For use in identifiers
eBottomPlate 20 For use in identifiers
eTopPlate 21 For use in identifiers

 

Derived Category derTKR

Overview:  Derived constants specific to tracker
 
NameValueDescription
TKRCloseoutTrans 360.6 mm Transverse dimension of the business part of the tray, large enough to include all silicon, closeout, etc. but no larger (Revised 3May02)
TKRTotalZ 631.965 mm total space occupied by tracker, including foot
TKRTrayWidth 363 mm Large enough to include 2 MCM boards (and 2 gaps) as well as closeout.
waferPitch 89.525 mm Distance between centers of adjacent wafers in a ladder
ladderPitch 89.7 mm Distance between centers of adjacent wafers in adjacent ladders
TKRGuardRing 0.974 mm Width of dead region around outside of Si wafer
TKRBiasWidth 360.6 mm Transverse dimension of bias board (for now assuming it's a square
TKRCloseoutThick 27.92 mm Z dimension of closeout for trays other than top and bottom
TKRCloseoutThickBot 36.535 mm Z dimension of closeout for bottom tray
TKRCloseoutThickTop 33.995 mm Z dimension of closeout for top tray
TKRCloseoutLen 360.6 mm Transverse length of longer of (imaginary) closeout pieces, just the same as the face sheet
TKRCloseoutLenShort 350.6 mm Transverse length of shorter of (imaginary) closeout pieces
TKRCoreWidth 350.6 mm Length of sides for core
TKRCloseout_dt 177.8 mm Transverse (x or y) offset of closeout pieces w.r.t. tray
MCMLength 360.6 mm Long transverse dimension of MCM board
TKRWallLengthShort 368.45 mm For the XML description, tracker wall is broken up into 4 pieces: 2 long ones extending in X and two slightly shorter ones extending in Y. This is the length of the shorter ones.
TKRWall_dt 184.975 mm Positive transverse offset of TKR wall, relative to center of a tower
TKRWall_dtn -184.975 mm Negative transverse offset of TKR wall, relative to center of a tower
TKRCloseout_dtn -177.8 mm Negative transverse offset of closeout pieces
TKRMCMint_dz 2.46 mm Offset of MCM board on + side w.r.t. enclosing envelope for interior (not top or bottom) boards
TKRMCMint_dzn -2.46 mm Offset of MCM board on - side w.r.t. enclosing envelope for interior (not top or bottom) boards
TKRMCMextTop_dz 5.4975 mm Offset of MCM board on + side w.r.t. enclosing envelope for top board
TKRMCMextTop_dzn -5.4975 mm Offset of MCM board on - side w.r.t. enclosing envelope for top board
TKRMCMextBot_dz 6.7675 mm Offset of MCM board on + side w.r.t. enclosing envelope for top board
TKRMCMextBot_dzn -6.7675 mm Offset of MCM board on - side w.r.t. enclosing envelope for top board
TKRMCM_dt 180.95 mm Transverse (x or y) offset of MCM board
TKRMCM_dtn -180.95 mm Negative transverse (x or y) offset of MCM board
biasGlueThick 0.35 mm Thickness of upper bias board and glue above it
TKRTopFaceRegZ 0.625 mm Thickness of combined glue+ face-sheet + glue + bias-board + glue for non-superGLAST trays
TKRTopFaceSupZ 0.715 mm Thickness of combined glue+ face-sheet + glue + bias-board + glue for superGLAST trays
TKRBotFaceRegZ 0.375 mm Thickness of bottom face sheet and surrounding glue for non-superGLAST trays
TKRBotFaceSupZ 0.465 mm Thickness of bottom face sheet and surrounding glue for superGLAST trays
TKRFaceMinZ 0.275 mm Thickness of regular face sheet and glue attaching it to core/closeout
TKRFaceMinBotZ 0.365 mm Thickness of regular face sheet and glue attaching it to core/closeout
TKRMaxNoCnv 2 Tray number of most forward no-converter tray
TKRMaxReg 17 Tray number of most forward "regular" tray. Top tray doesn't qualify since it has no top Si.
nWaferAcrossM1 3 Used as bound for possible idField values
nLadderM1 3 Upper limit on ladder idField values
maxTray 18 Upper limit on tray idField values
maxTrayM1 17 max tray number of tray with bottom Si wafers
maxWaferStripNum 383 Upper limit on strip number within a wafer

 

Derived Category cu06

Overview:  specific to cu06 model
 
NameValueDescription
LATGridFlangeLong_dt 204.25 mm Transverse offset of LAT-wide grid flange pieces
LATGridFlangeLong_dtn -204.25 mm Neg. transverse offset of LAT-wide grid flange pieces
LATGridWebLong_dt 191.75 mm Transverse offset of LAT-wide grid web pieces
LATGridWebLong_dtn -191.75 mm Neg. transverse offset of LAT-wide grid web pieces
oneNoTKRAbs_dz -125.6 mm Z of CAL+grid w.r.t. Ritz origin. Top of it is at Z=0
ISCCalZpFace_x 824 mm X-dimension of Z+ face of cu06 container in front of calorimeters only. This is based on guesses of a couple primary constants!!
ISCThinHalf 1 mm Half thickness for thin ISC panels
ISCThickHalf 2 mm Half thickness for thick ISC panels
ISCTkrXp_dx 833 mm X position for isc box to +X side of tracker
ISCTkrX_dz 356.9 mm Z position for isc boxes to +X and -X side of trackers Assume min Z is the same as for the trackers and that that is approx. calTrackerGap
ISCCalXp_dx 834 mm X position for isc box to +X side of cals
ISCCalX_dz -196.1 mm Z-displacement of container panels adjacent to CAL in +X and -X directions
ISCTkrXn_dx -9 mm X disp for isc box to -X side of trackers
ISCCalXn_dx -834 mm X position for isc box to -X side of cals
ISCTkrZp_dx 412 mm X disp for isc box to +Z side of trackers
ISCTkrZp_dz 687.9 mm Z disp. for isc box to +Z side of trackers
ISCCalZp_dx -420 mm X disp for isc box to +Z side of cals
ISCCalZp_dz 25.9 mm Z disp. for isc box to +Z side of cals
ISCCalZn_dz -421.1 mm Z disp. for isc box to -Z side of cals
ISCTkrYn_dy -226.5 mm y-disp of isc panel to -y side of tkrs (above)
ISCTkrYp_dy 227.5 mm y-disp of isc panel to +y side of tkrs (below)
ISCCalYp_dy 227.5 mm y-disp of isc panel to +y side of cals (below)
ISCCalYn_dy -227.5 mm y-disp of isc panel to -y side of cals (above)
ACDTile_000_dz 700.9 mm z-displacement of tile 000, computed from position of front container face, adding in standoff from ACD_tiles_final_position.pdf
ACDTile_000_dx 77 mm x-displacement of tile 000, computed from position of front container face. Min x for top tile should equal min X for Z face of container: tile_dx - 1/2 tileX = face_dx - 1/2 faceX
ACDTile_100_dy 0 mm y-displacement of tile 100 (on -X face)
ACDTile_110_dy 0 mm y-displacement of tile 110 (on -X face)
ACDTile_120_dy 0 mm y-displacement of tile 120 (on -X face)
ACDTile_130_dy 0 mm y-displacement of tile 130 (on -X face)
ACDTile_100_dx -50 mm x-displacement of tile 100 (on -X face). Computed from location of ISCTkrXFace and standoff
ACDTile_110_dx -25 mm x-displacement of tile 110 (on -X face).
ACDTile_120_dx -25 mm x-displacement of tile 120 (on -X face).
ACDTile_130_dx -25 mm x-displacement of tile 130 (on -X face).
ACDTile_100_dz 606.9 mm z-displacement of tile 100 (on -X face). Computed from location of ISCTkrZFace. Appears to stick up by about 1/2 tile thickness
ACDTile_110_dz 466.9 mm z-displacement of tile 110 (on -X face). Computed from location of tile 'above' (100)
ACDTile_120_dz 298.9 mm z-displacement of tile 120 (on -X face). Computed from location of tile 'above' (110)
ACDTile_130_dz 132.9 mm z-displacement of tile 130 (on -X face). Computed from location of tile 'above' (120)

 

Derived Category misc

Overview:  Stuff that doesn't fit elsewhere
 
NameValueDescription
xNumM1 3 Convenience number
yNumM1 0 Convenience number
maxLog 11 Upper limit on CsI log idField values
towersTotalX 1495.5 mm Meant to be X width of the array of tracker towers; doesn't include grid
towersTotalY 1495.5 mm Meant to be Y width of the array of tracker towers; doesn't include grid
towersTotalZ 891.2 mm Height of cal (stay clear) + height of tracker (S-C) + gap between. Also add gap between CAL and
towersTotalHalfZ 445.6 mm Convenience
oneNoTKR_z 251.2 mm Height of a CAL-only tower (CAL + grid)
oneNoTKR_dz -320 mm Z-displacement of a oneCalTower (no tracker) w.r.t allTowers volume. It's at the bottom
CAL_dz -333.45 mm Offset of CAL stay-cleaar within single-tower volume. It's just below flange and min. 1.5 mm gap.
TKR_dz 125.6 mm Offset of TKR within single-tower volume
TKRFudge_dz -4.0175 mm Extra offset to get TKR bottom to touch grid. Depends on TkrTotalZ, which is entered by hand. This may go away if geometry can learn to do this by itself.
gridFlange_dz -207.1 mm Z-Offset of grid flange pieces within single-tower volume.
gridWeb_dz -325.2 mm Z-Offset of grid web pieces within single-tower volume
gridFlange_dt 180.275 mm Transverse offset of per-tower grid flange pieces
gridFlange_dtn -180.275 mm Negative transverse offset of per-tower grid flange pieces
gridWeb_dt 185.25 mm Transverse offset of per-tower grid web pieces
gridWeb_dtn -185.25 mm Negative transverse offset of per-tower grid web pieces
LATGridFlange_dt 766 mm Transverse offset of LAT-wide grid flange pieces
LATGridFlange_dtn -766 mm Neg. transverse offset of LAT-wide grid flange pieces
LATGridWeb_dt 753.5 mm Transverse offset of LAT-wide grid web pieces
LATGridWeb_dtn -753.5 mm Neg. transverse offset of LAT-wide grid web pieces

 

Derived Category derACD

Overview:  Derived constants specific to the ACD
 
NameValueDescription
sideTileTransLesser 329.667 mm Transverse dimension of one edge side tile tile per side: column 4 for -X and +Y side (faces 1 and 4); column 0 for +X side and -Y side (faces 2 and 3).
sideTileTransGreater 342.967 mm Transverse dimension of one edge side tile tile per side: column 0 for -X and +Y side (faces 1 and 4); column 4 for +X side and -Y side (faces 2 and 3).
sideTileTransMid 332 mm Transverse dimension of side tiles in columns 1,2 and 3.
ACDSideSupportThick 26.4414 mm Thickness of core + face sheets for side support
ACDTopSupportThick 51.8414 mm Thickness of core + face sheets for top support
ACDTop_z 66.082 mm Z dimension of envelope which will contain ACD top tiles and ribbons (1 nov 2002) As of July, '03, simply use information from 3-d model about location of top of topmost tiles and top of support structure to compute this.
ACDTopZHalf 33.041 mm for convenience
ACDTop_d 741.959 mm Z displacement of top ACD relative to Ritz origin. As of July, 2003, get frontmost tile position from 3-d model version 6-23-03; compute from there.
ACDSideThickness 10 mm This isn't really correct. If overlapping and slant are taken into account, ACDSideThickness is over twice this value. (1 nov 2002)
ACDTotalTransSide 1676.63 mm transverse length of collection of ACD side tiles, e.g those alone -X side of instrument. Could be used for envelope volume. Is also equal to transverse dimension of the single tile in the bottom row. (1 nov 2002). July '03. Now compute as sum of tranverse dimensions of tiles in R0, columns 0-5, plus gaps
ACDTotalTransSideOp 1671.26 mm Scaled for operating temperature
tileThicknessOp 9.968 mm Scaled tile thickness (all but top center tiles)
tileCenterThicknessOp 11.9616 mm Scaled tile thickness for top center tiles)
ACDSidesGap 1669.94 mm Min. distance between tiles of the two sides || to x-axis or equivalently of the two sides || to y-axis. Use displacement info for top row of tiles from from 3-d model
ACDTopTransverse 1663.34 mm Transverse dimension of envelope which will contain ACD top tiles and ribbons. As of July 2003, just set to value large enough to include all top tiles as positioned from 3-d model. From this model there is an approx. 3 mm (actually 3.3) gap between side tiles (top row) and top tiles
ACDTotalX 1690.94 mm Total extent in X of entire collection of ACD pieces, plus a millimeter for good luck (4 nov 2002)
ACDTotalY 1690.94 mm Total extent in Y of entire collection of ACD pieces
topTileXEdge_lOp 328.612 mm Scaled version of topTileXEdge_l
topTileXMid_lOp 330.938 mm Scaled for operating temperature
topTileXCentral_lOp 330.938 mm Scaled for operating temperature
topTileYEdge_lOp 353.864 mm Scaled for operating temperature
topTileYMid_lOp 342.899 mm Scaled for operating temperature
topTileYCentral_lOp 342.899 mm Scaled for operating temperature
topTileBentZOp 49.84 mm Scaled for operating temperature
sideTileHeight0Op 364.829 mm Scaled for operating temperature
sideTileHeight1Op 198.822 mm Scaled for operating temperature
sideTileHeight2Op 149.52 mm Scaled for operating temperature
sideTileHeight3Op 134.917 mm Scaled for operating temperature
sideTileTransLesserOp 328.612 mm Scaled for operating temperature
sideTileTransGreaterOp 341.87 mm Scaled for operating temperature
sideTileTransMidOp 330.938 mm Scaled for operating temperature
screwExtLen 15.4 mm Length of screw part sticking out of normal-thickness tile
screwExtThickLen 13.4 mm Length of screw part sticking out of thick (top central) tile
topScrewXEdge_dx 139.833 mm x-displacement for screws on +x side of X-edge tiles
topScrewXEdge_dxn -139.833 mm x-displacement for screws on -x side of X-edge tiles
topScrewXMid_dx 141 mm x-displacement for screws on +x side of X-mid tiles
topScrewXMid_dxn -141 mm x-displacement for screws on -x side of X-mid tiles
topScrewXCentral_dx 141 mm x-displacement for screws on +x side of X-central tiles
topScrewXCentral_dxn -141 mm x-displacement for screws on -x side of X-edge tiles
topScrewYEdge_dy 152.5 mm y-displacement for screws on +y side of Y-edge tiles
topScrewYEdge_dyn -152.5 mm y-displacement for screws on -y side of Y-edge tiles
topScrewYMid_dy 147 mm y-displacement for screws on +y side of Y-mid tiles
topScrewYMid_dyn -147 mm y-displacement for screws on -y side of Y-mid tiles
topScrewYCentral_dy 147 mm y-displacement for screws on +y side of Y-central tiles
topScrewYCentral_dyn -147 mm y-displacement for screws on -y side of Y-edge tiles
side0Screw_dz 158 mm z-displacement for screws on +z side of top row (0) side tiles
side0Screw_dzn -158 mm z-displacement for screws on -z side of top row side tiles
side1Screw_dz 74.73 mm z-displacement for screws on +z side of row 1 side tiles
side1Screw_dzn -74.73 mm z-displacement for screws on -z side of row 1 side tiles
side2Screw_dz 50 mm z-displacement for screws on +z side of row 2 side tiles
side2Screw_dzn -50 mm z-displacement for screws on -z side of row 2 side tiles
sideLesserScrew_dt 139.833 mm Transverse (x or y) displacement for screws on some narrower side tiles (col 0 for sides 2 or 3; col 4 for sides 1 and 4)
sideLesserScrew_dtn -139.833 mm Transverse (x or y) displacement for screws on outer side tiles (negative direction
sideGreaterScrew_dt 146.483 mm Transverse (x or y) displacement for screws on wider outer side tiles (col 4 for sides 2 or 3; col 0 for sides 1 and 4)
sideGreaterScrew_dtn -146.483 mm Transverse (x or y) displacement for screws on wider side tiles (negative direction
sideMidScrew_dt 141 mm Transverse (x or y) displacement for screws on side tiles in cols 1,2,3
sideMidScrew_dtn -141 mm Transverse (x or y) displacement for screws in side tiles, cols 1,2,3 (negative direction)
tileSide_dt 839.97 mm Transverse (perpendicular to plane of face) displacement of side face of ACD
tileSide_dtn -839.97 mm Transverse (perpendicular to plane of face) displacement of side face of ACD for "negative" faces
ACDScrewSqSide 53.18 mm Total length of side of a minimal square containing a group of 4 screws
ACDScrewSqMin_d 139.272 mm Half of distance between centers of adjacent screw squares, equal to transverse displacement of most central squares
ACDScrewSqMin_dn -139.272 mm Smallest neg. displacement of a screw square
ACDScrewSqMin3_d 417.816 mm Displacement for squares 2 and 5
ACDScrewSqMin3_dn -417.816 mm Neg. displacement (square 2)
ACDScrewSqMin5_d 696.36 mm Displacement for squares 1 and 6
ACDScrewSqMin5_dn -696.36 mm Neg. displacement (square 1)
screwInSq_d 25 mm Displacement of a screw from center of screw square
screwInSq_dn -25 mm Negative displacement of a screw from center of screw square
ACDSide_z 850.81 mm Total height of an ACD side of tiles (tiles plus gaps)
tileHalfThickness 5 mm for convenience
sideTileRow0_d 242.405 mm Z-Displacement for top row (row 0) of side tiles (X and Y), relative to the center of a box containing the side
sideTileRow1_d -40.325 mm Displacement for row 1 side tiles (X and Y)
sideTileRow2_d -215.055 mm Displacement for row 2 side tiles (X and Y)
sideTileRow3_d -357.73 mm Displacement for row 3 side tiles (X and Y)
ACDSideDovetail_d 6.65 mm Side tiles on sides parallel to X-axis (sides 2 and 4) have a displacement in X of this amount, positive for side 2 and negative for side 4. Similarly side 3 is displaced positively in Y by this amount, side 1 negatively.
ACDSideDovetail_dn -6.65 mm Dovetail displacement for "negative" ACD sides
topTileEdge_dz 770 mm Displacement w.r.t. LAT origin of highest tiles, those in row [was col before Nov 05] 0 and 4
topTileMid_dz 757.4 mm Displacement w.r.t. LAT origin for tiles in rows [was cols before Nov 05] 1 and 3
topTileCent_dz 743.8 mm Displacement w.r.t. LAT origin for tiles in row [was col before Nov 05] 2
topTileMid_dy 324 mm Y displacement of top tiles in row 3
topTileMid_dyn -324 mm Y displacement of top tiles in row 1
topTileEdge_dy 653.5 mm Y displacement of top tiles in row 4
topTileEdge_dyn -653.5 mm Y displacement of top tiles in row 0
topTileMid_dx 334 mm X displacement of tiles in col 3
topTileMid_dxn -334 mm X displacement of tiles in col 1
topTileEdge_dx 666.833 mm X displacement of tiles in col 4
topTileEdge_dxn -666.833 mm X displacement of tiles in col 0
topTileBent_dz 740.096 mm Z displacement w.r.t origin of extra pieces needed to make bent tiles
topTileBentR0_dy -825.448 mm Y displacement w.r.t origin of extra pieces needed to make bent tiles in row 0
topTileBentR4_dy 825.448 mm Y displacement w.r.t origin of extra pieces needed to make bent tiles in row 0
topYRibbon_dz 724 mm Z displacement rel. to containing envelope for long ribbon segments running || to X-axis along top.
ribbonHalfThickness 2.5 mm for convenience
yRibbonTop_l 1663.34 mm These ribbons run the full distance across ACDTop (actually more, but that's all that will fit)
xRibbonTopCent_l 374 mm length of ribbon segments running under the central row of tiles
xRibbonTopMid_l 337.5 mm length of ribbon segments running under rows 1,3 of top tiles
xRibbonTopEdge_l 322.396 mm length of ribbon segments running under rows 0,4 of top tiles. Shorten up to avoid bent tile pieces (Jan '06)
xRibbonOuter_dxn -501.8 mm X displacement for X-ribbon #0
xRibbonInner_dxn -166 mm X displacement for X-ribbon #1
yRibbonOuter_dyn -502 mm Y displacement for Y-ribbon #0
yRibbonInner_dyn -168.4 mm Y displacement for Y-ribbon #1
ribbonsSideWidth 1017.6 mm Width of envelope volume to contain 4 side ribbons
ribbonsSideZ 754.728 mm Height of envelope volume to contain 4 side ribbons. The envelope extends from bottom of ACDTop volume to back edge of side tiles. But this isn't quite right! They only go down to a Z of -15.67 mm, whereas tiles go down to -45.5. Furthermore, the side parts of X-ribbons should go higher: nearly up to underside of the top tiles.
ribbonBentZ 43.5 mm Length (Z) of pieces of ribbon behind extra bent tile pieces
topXRibbonEdge_dz 761 mm Z displacement for outer segments (1 and 5) of top ribbons running perp. to X axis
ribbonBent_dz 736.75 mm Z displacement of extra little pieces of ribbon behind bent tiles
ribbonBentR4_dy 816.448 mm Y displacement for ribbons behind bent tiles in row 4
ribbonBentR0_dy -816.448 mm Y displacement for ribbons behind bent tiles in row. 0
topXRibbonMid_dz 748.4 mm Z displacement for mid segments (2 and 4) of top ribbons perp. to x-axis
topXRibbonCent_dz 733.8 mm Z displacement for central segment (3) of top ribbons perp. to x-axis
topXRibbonMid_dy 342.25 mm y-displacement of segment 4
topXRibbonMid_dyn -342.25 mm y-displacement of segment 2
topXRibbonEdge_dy 658.698 mm y-displacement of segment 5
topXRibbonEdge_dyn -658.698 mm y-displacement of segment 1
ACDSideSupport_dDovetailn -13.03 mm Negative dovetail distance for those sides that need it.
ACDSideSupport_dtn -779.9 mm Transverse (x or y) distance of support side from Ritz origin, negative
XTopTileMax 4 Convenience for idField definitons
YTopTileMax 4 Convenience for idField definitons
ACDShortRowMin 3 row number of first short ACD side row
ACDShortRowMax 3 row number of last short ACD side row
ACDShortMaxCol 0 Column number of last tile in a short row
ACDLongMaxCol 4 Column number of last tile in a long row

 

Derived Category derGlobal

Overview:  A few more constants needed for the outermost LAT compositions
 
NameValueDescription
LATX 1690.94 mm X-dimension of an envelope for the LAT, not including thermal blanket
LATY 1690.94 mm Y-dimension of an envelope for the LAT, not including thermal blanket
LATZ 1064.92 mm Z-dimension of an envelope for the LAT, not including thermal blanket
bigXZDim 4582.4 mm Something big enough (for X and Z) to position everything inside, with origin where it should be, at the very front of the grid.
biggerZDim 4582.4 mm this is to make room for moving the LAT around in z, to look for bad hardwired consts. The formula is: biggerZDim = bigXZDim + 2* abs(globalOffset_dz)
NADTotalPanelLen 6000 mm Length of panel proper plus connecting rod
bigYDim 13835.5 mm Something big enough to use as Y dimension of envelope (takes into account solar panels)
solarPanel_dy 500 mm y-displacement of panel-only part of solar panel w.r.t. envelope including panel and connecting rod
solarRod_dy -2500 mm y-displacement of rod part of solar panel w.r.t. envelope including panel and connecting rod
solarPanelEnv_dy 3817.78 mm y-displacement of entire (+Y) solar panel envelope w.r.t. Ritz origin.
solarPanelEnv_dyn -3817.78 mm y-displacement of entire (-Y) solar panel envelope w.r.t. Ritz origin.
solarPanelEnv_dz -951.2 mm z-displacement of entire solar panel envelope w.r.t. Ritz origin.
solarPanelSi_dz 1 mm z-displacement of Si part of solar panel w.r.t. envelope including panel and connecting rod
solarPanelCore_dz -2 mm z-displacement of core part of solar panel w.r.t. envelope including panel and connecting rod
NADSolarRodDiam 100 mm Diameter of rods connecting solar panels to spacecraft
LATZHalf 532.46 mm convenience
towersTrans 1498 mm Transverse dimension of envelope containing the towers
innerTowers_dt 187.25 mm Transverse displacement of towers in row (column) 2
outerTowers_dt 561.75 mm Transverse displacement of towers in row (column) 3
innerTowers_dtn -187.25 mm Transverse displacement of towers in row (column) 1
outerTowers_dtn -561.75 mm Transverse displacement of towers in row (column) 0
towers_dz 194.4 mm Displacement necessary to get towers origin in the right place, namely at the front face of the grid **Decreased by gap between CAL and TKR, nearly the same as grid flange height, as of 29 Apr 2003**
spacecraft_dz -951.2 mm Z displacement of spacecraft relative to Ritz origin. It goes immediately under the LAT
tileSide_dz 379.595 mm displacement in z of side tiles rel. to Ritz origin. Compute relative to ACDTop_d. Find coordinate of top of ACD side, then subtract half side height.
ribbonsSide_dz 331.554 mm displacement in z of side ribbons rel. to Ritz origin. Ribbons go down as far as tile sides but don't go up quite as high.
ribbonsSide_dt 832.47 mm Transverse displacement from origin of a side's worth of ribbons. Place them in an idealized position right next to side tiles
ribbonsSide_dtn -832.47 mm Transverse displacement from origin of a side's worth of ribbons on a negative side
gridFlangeNoTKR_dz 112.9 mm adjust for placement in smaller envelop
gridWebNoTKR_dz -5.2 mm adjust for placement in smaller envelop
CALNoTKR_dz -13.45 mm adjust for placement in smaller envelop

 

Derived Category derNAD

Overview:  Derived not-a-detector constants
 
NameValueDescription
NADGridWebWidth 1516 mm Full width of grid web in X or Y
NADGridFlangeWidth 1566 mm Full width of grid flange in X or Y
NADGridFlangeOuter 47.95 mm Width of outer piece of flange (wider than web)
NADGridFlangeInnerHalf 13.95 mm convenience
NADGridWebInnerHalf 4 mm convenience
NADGridLenLong 374.5 mm Length of longer outer (not per-tower) grid pieces
NADGridWebLenShort 366.5 mm Length of shorter outer (not per-tower) grid web pieces
NADGridFlangeLenShort 346.6 mm Length of shorter outer (not per-tower) grid flange pieces
NADGridWebOutsideWidth 9 mm Width of web outside towers (i.e., 4 * towerPitch)
NADGridFlangeOutsideWidth 34 mm Width of flange outside towers (i.e., 4 * towerPitch)
NADGridWebOutsideLenShort 1498 mm Length of short outside piece of grid web
NADGridFlange_dz -12.7 mm Displacement of flange w.r.t. Ritz origin, which is at its top face
NADGridWeb_dz -130.8 mm Displacement of grid w.r.t. Ritz origin. Web is immediately below flange.
NADGridFlangeOutsideLenShort 1498 mm Length of short outside piece of grid web
NADBlanketTopHoleTrans 1587.5 mm Transverse distance between inner edges of crown May, 2006.
NADBlanketTopInteriorTrans 1647.94 mm Transverse dimension of depressed part of top blanket, May, 2006
NADBlanketTopMidZ 1.53 mm Z of middle of three stacked volumes comprising blanket top.
NADBlanketSideY_l 1790.7 mm length in long (x) dimension of Y-sides of blanket
NADBlanketSideX_l 1729.1 mm length in long (Y) dimension of X-sides of blanket, shorter than Y-sides because Y-sides cover corners
NADBlanketSide_dt 879.95 mm Transverse + displacement of blanket side
NADBlanketSide_dtn -879.95 mm x (resp. y) displacement of neg. x (resp.y) side of blanket
NADBlanketTopInterior_dz 797 mm Z-displacement of blanket interior to crown
NADBlanketTopMid_dz 812.875 mm Z-displacement of middle section of blanket, above interior, below outer crown piece
NADBlanketTopTop_dz 828.75 mm Z-displacement of top crown sectio of blanket
NADBlanketSides_dz 354.64 mm z displacement of sides of blanket. Sits just under blanket crown piece.
NADBlanketSideToSideTileComp 19.58 mm Compute distance from inner edge of side blanket to outer edge of side tile (top row)

 
Generated by detModel from file /scratch/glastsoft/grape/xmlGeoDbs/v1r35/xml/cu06/cu06SegVols.xml on Wed Jul 26 19:42:23 2006