Status May 9, 2006
Joanne has updated xmlGeoDbs to include new volumes for the updated blanket including the crown.
Heather updated materials.xml to include the element Boron and to modify the blanket description according to the details that are described further down on this page.
The final design document for the MMS reports: "The measured mass of the ACD MMS/MLI is 39.455 kg."
Using detCheck v1r5 and its summary.exe application, we find that the blanket material results in:
blanket: #Log = 5 #Phys = 7 Total volume = 302152 cu cm Mass = 37769 gm
Seems fairly close.
Joanne ran the test application in detCheck which checks for overlaps - none were found.
Ran constsDoc.exe in detCheck and produced this HTML page.
In particular we can take a look at the Blanket constants:
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 |
NADBlanketTopThick 30.22 mm is determined below in the section "Final Design"
NADBlanketSideThick 30.8 mm is determined below in the section "Final Design"
NADCrownToTile 2.26 mm is determined below in the section: "Distance between MMS/MLI and ACD Tiles"
NADBlanketToTopTile 6.89 mm is determined below in the section: "Distance between MMS/MLI and ACD Tiles"
NADCrownWidth from the Final Design Document is 4.0" converted to mm is 101.6 mm
NADCrownDepth is 1.25" converted to mm is 31.75 mm
NADBlanketTopTrans is obtained directly from the Final Design Document diagram
NADBlanketSideZ is obtained directly from the Final Design Document 918 mm
Blanket Model since the AO
...
C | H | N | O | B | Al | Si |
|---|---|---|---|---|---|---|
319.73 | 12.20 | 520.21 | 594.22 | 154.89 | 1269.21 | 439.54 |
3122.62 | 187.17 | 232.23 | 663.18 |
|
|
|
2190.57 | 83.55 | 33.90 | 1128.91 |
|
|
|
|
|
| 343.86 |
|
|
|
|
|
| 96.80 |
|
|
|
|
|
| 500.78 |
|
|
|
3442 5632.35 92 g | 282.92 g | 786.34 g | 3327.75 g | 154.89 g | 1269.21 g | 439.54 g |
Total: 9703 11893.57 g
Mass Fractions:
C: 34425632.3592/9703 11893.57 = 0.355474
H: 282.92/9703 11893.57 = 0.029024
N: 786.34/9703 11893.57 = 0.081066
O: 3327.75/9703 11893.57 = 0.343280
B: 154.89/9703 11893.57 = 0.016013
Al: 1269.21 / 9703 11893.57 = 0.131107
Si: 439.54 / 9703 11893.57 = 0.045037
Side
Dimensions: 1798 mm x 918 mm
Outer surface area: (179.8 cm x 91.8 cm) = 16505.64 cm2
...
C | H | N | O | B | Al | Si |
|---|---|---|---|---|---|---|
1117.74 | 42.63 | 118.50 | 338.39 | 79.13 | 1036.63 | 224.40 |
2123.79 | 127.30 | 353.81 | 404.14 |
|
|
|
436 163.00 83 | 16 6.63 25 | 46 17.22 37 | 175.67 |
|
|
|
|
|
| 255.67 |
|
|
|
|
|
| 922.05 |
|
|
|
|
|
| 132 49.00 60 |
|
|
|
36773405.53 36 | 186176.56 18 | 518489.5368 | 22272145.9252 | 79.13 | 1036.63 | 224.40 |
Total: 7556.90
Mass Fractions:
C: 0.451
H:: 0.023
N: 0.065
O: 0.284
B: 0.010
Al: 0.137
Si: 0.030
Suggested Material Definition
The material for the top and sides of the blankets are "close enough" that it seems appropriate to use the same material for both. We'll use the mass fractions from the side computation
<composite name="blanket" density = "0.12125">
<addmaterial material="Aluminum">
<fractionmass fraction="0.137" />
</addmaterial>
<addmaterial material ="Silicon">
<fractionmass fraction="0.030" />
</addmaterial>
<addmaterial material ="Oxygen">
<fractionmass fraction="0.284" />
</addmaterial>
<addmaterial material ="Carbon">
<fractionmass fraction="0.451" />
</addmaterial>
<addmaterial material ="Hydrogen">
<fractionmass fraction="0.023" />
</addmaterial>
<addmaterial material = "Nitrogen">
<fractionmass fraction="0.065"/>
</addmaterial>
<addmaterial material="Boron">
<fractionmass fraction="0.010"/>
</addmaterial>
</composite>