Operations 2018

EPD Run by Run QA 2018

Isobar run by run QA: drupal.star.bnl.gov/STAR/blog/jewigleb/epd-isobar-2018-run-list

EPD racks in plat form

EPD uses 1C2 and 1C3 racks in the south platform:
Here is the drawing of the racks:

https://drupal.star.bnl.gov/STAR/system/files/EPD%20rack%20dwg%20rev6.pdf

Mapping


For the current mapping file, look for "Current" in the Attached Files at the bottom of this page.

I removed some of the older versions of excel sheets, which are irrelevant for now.
 
Mapping mistakes, errors and fixes:
 
02/21/2018 : East PP8 TT27 no data from QTC board. Found bent pin in the positronix cable.
                      https://drupal.star.bnl.gov/STAR/blog/adams92/positronics-connector-broken-and-fixed
 
02/21/2018: East PP9 TT1 output is missing. My mistake.
                     This SS is a odd one, where tile 1 in this SS is in the even side.
                     So we have to swap the cable at RxB. Mistakenly I have swapped in the database too.
                     I have updated the database.
 
02/21/2018: East PP10 TT22, high current.
                      Swapped odd and even side of the fiber boundel, bad channel swapped. So replaced the SiPM board 28 to 32.
 
02/22/2018: East PP08 TT08 and PP08 TT09 are swapped at RxB to QT. It has been fixed.

02/23/2018: East vs West PP9 TT01 issues.
                     West TUFF map is wrong.
                     Correct TUFF mapping for east and west should be:
                     ew    PP    TT    TUFF    TUFF Branch    TUFF Channel
                      0      9      1        2            0                      5   
                      1      9      1        1            1                      4

                      Still East side has issues, un solved.
                      I have checked the east tile with scope and saw cosmic pulses

Pre- and post-beam commissioning

Post-installation / pre-beam commissioning
  1. Pre-post checking, to make sure we are in same bin as BBC.  DONE
  2. Verify proper mapping from TUFF to StEvent (tests databases, cabling...)  ("Seven Patterns" test) DONE
  3. Vped adjustment   DONE
  4.  I-V scan has been done about once/day   DONE
  5. Confirm data goes from QT32C to TCU 
    • this is important for TRIGGER readiness, but not for PHYSICS readiness
    • Prashanth or Rosi need to write up the purpose and instructions here.

Post-beam commissioning to be ready for PHYSICS
  1. (Re-)confirm pre-post timing  (it's easy and it's important)
    • Same instructions as item #1 above.
  2. Timing scan    DONE
  3. Bias scan   DONE


SW FEE box Removal

What supersector, fiberbundle, FEE, and SiPM is where?

Prashanth maintains a page of the complete EPD mapping.  Here, the focus is to record which supersector and fiber bundle is at what position in the 2018 run.  These are unlikely to change, during the run!
  • You can click on the Supersector number to see ADC spectra from test stand cosmic runs.  More complete information on SS health can be found on this page.
  • Click on the Fiberbundle number to see results of transmission tests.  More complete information on FB health can be found on this page.
  • On 22 June 2018, Mike has filled in the SiPM# information based on BNL logbook page 102, which was filled between 20 Jan and 4 Feb 2018.

Position OSU SS # Lehigh FB# FEE# (odd) FEE# (even) SiPM# (odd) SiPM# (even) Comments/issues
East PP01  21  13  04  47  13  59    
East PP02  23  23  05  52  43  53  
East PP03  20  20  11  46  47  57  
East PP04  22  15  10  41  51  52  
East PP05  14  05  14  21  19  06  
East PP06  29  18  12  20  50  49  
East PP07  25  08  44  42  02  11  TT25 dead.  all good
East PP08  24  24  49  60  56  12  
East PP09  01  27  58  48  46  55  
East PP10  05  14  51  55  26  28 32 SiPM#28 was bad; replaced
East PP11  06  21  01  53  ???????  58  odd SiPM# not recorded
East PP12  31  01  50  59  27  29  
West PP01  15  04  22  15  15  14  
West PP02  19  03  17  19  35  25  
West PP03  12  11  28  24  24  34  
West PP04  11  02  07  29  37  36  
West PP05  30  16  25  16  18  21  
West PP06  27  26  38  02  10  60  
West PP07  07  10  23  57  22  08  
West PP08  09  07  26  43  16  09  
West PP09  02  17  32  56  20  38  TT25 dead all good
West PP10  04  09  27  30  33  05  
West PP11  10  06  31  40  04  07  
West PP12  03  19  45  37  23  03  


Not listed in the table above (i.e. not used in run 2018):

  • 12 of the 60 FEE cards produced: 03, 06, 08, 09, 13, 18, 33, 34, 35, 36, 39, 54
    • #18 had been installed originally but didn't communicate.  Tim has since repaired it and returned it to EPD group
    • End-of-run inventory June 2018:  12 "spare" FEEs are in cabinet, but one has no label on it.  All numbers except for #35 were found on the spare labels, so presumably the un-labeled spare is #35.
    • So, all 60 FEEs are accounted for, at end of run 2018.
    • Mike is taking four FEEs (#33,34,36,39) to Ohio for summer 2018
  • 13 SiPM cards of the 60 SiPM cards produced:  01, 17, 28(bad), 30, 31, 39, 40, 41, 42, 44, 45, 48, 54
    • note that one card listed in the table had no number, so presumably one of the 13 listed above is actually in the experiment.
    • End-of-run inventory June 2018: 12 "spare" SiPMs accounted for, in total
      •  all numbers on the list above are identified, except 01, 17, 44.  However, we have one in the experiment un-numbered, and two from Tim simply labeled "1" and "2" on the bag.
    • Bottom line: all 60 SiPM cards are accounted for, at end of run 2018, except we have three un-numbered cards who are certainly 01,17,44, but we don't know exactly which is which.  No big deal.
    • Mike is taking four SiPM cards (#40, 41, 45, 48) to Ohio for summer 2018
  • 7 of the 31 SS produced: 08, 13, 16, 17, 18, 26, 28

 


Here is a handy map to help reproduce the fiber placement in run 2019.   A high-resolution PDF file is here: drupal.star.bnl.gov/STAR/system/files/Setup2018.pdf