ESTB 2016/May

Event Log

• May/5:
  
  • Plugged in the beam trigger BNC cable to the TLU PMT trigger and ready for beam.
  • MCC complained not all doors were shut. Both small door and the fence gate in the ESA entrance alley need to be closed. Hall light all went dark after doors closed. Tonee brought back tunnel lights from MCC upon seeing our E-mail, so we can now see all the web cams again. 
  • First attempt to send beam. Tonee tuned to ~4 electrons/crossing with 11 GeV beam @5Hz.
  • Starting Caladium position was close to be centered vertically but ~10cm off horizontally (towards ESA entrance side). Mike helped to get the position adjustments with his new Beckoff 26 (B061 Calladium) panel (Motors section). Moved at ~10mm steps to "RBV from step: 101.72mm" (with >) which the overhead CAM05 shows is moving away from ESA entrance as hoped.
  • Mike set the trigger to chan 7 (ESA User 3 TTL) initially but that didn't trigger EUDAQ. He switched that cable to chan 10 (Silicon Tracker - Calladium (NIM)) and used the last Jan/2016 setting of width=200, delay=-104950. This got beam triggers going in EUDAQ and datataking with ni_coins.cfg now getting real beam hits on Calladium.
  • Run 148-150 showing a rectangular beam spot width of (DX,DY) ~ (120,230) which is ~(2mm,4mm). (MIMOSA has 18.4um square pixels with X,Y range 1152,576). The centroid of the front 3 planes are at (180,280), and the back 3 planes are at (330,140). The front and back plane groups are ~70cm apart in Z. The tilt is (+150,-140) or (2.8mm,-2.6mm), which is ~4mrad tilt. There is no vertical tilt adjustment but there is a manual knob for horizontal tilt (around Y-axis).         
  • Stopped Run 150. Attempt to move telescope. Y fine abs position 45.0->43.7mm.  X fine 65.0->59.5mm these didn't matter (they are for DUT only). Coarse Y set=0. bottomed out but still not quite low enough. Coarse X abs pos 100 to 96.
  • Tried to get operator to enlarge the beam spot but nothing seemed to make much difference, but upon restart after access, the spot went to almost full aperture of 1.5mm wide in X and 0.5mm high in Y. No clear what helped that.
  • Moved in DUT hardware with an access:
    • New reference planar 2-chip module 930304 installed as DUT in vertical frame directly mounted on the rotation stage.
    • New shield heavy gauge long LV cable to PSU with Vset=1.5 (lab test showed currents up to 0.65A). This is a special direct power module requires Vset not exceeding 1.5V.
    • Threshold scan worked well in Lab1 with a -50V HV, but had trouble to turn on the BK Precision 1697 supply (+ve and GND ganged to supply -ve HV) which could only go up to 40V max in any case (Martin thinks unirradiated planar may still need ~60V to be sure).
    • A new HSIO-II installed on top shelf with the new 18 port RJ45 pixel interface for DUT DAQ. Its 18th port is connected to TLU DUT 1.     
    • Two output data channels of the pixel module connected to HSIO-II interface ch 0 and 1 respectively, but swapped in green cable from web cam and orange cable on a table (not sure if it works) for data links.
    • Don't have proper CAT6 cables to ground HSIO-II against supplies. Still needs a dedicated ground cable from HSIO-II to PSU. 
    • A new Sun server from Lab1 packaged to serve as DUT DAQ host node is shipped into ESA and installed into the Calladium rack. It comes in as a replacement node for esa-user12 172.27.104.42 and with same common operation user account tbslac as for esa-user02. The private ethernet link to HSIO-II recognizes HSIO-II as rce0. Boot up has some trouble in ESA: not able to startx.   
    •  A microUSB hub added to lead out the single USB port on esa-user12 for 3 different purposes: keyboard, mouse and microUSB link to HSIO-II UART port.