List of bad BTOF trays

status as of Oct.'22: 10 bad trays plus one tray (102) with HV issues

• trays 2, 22, 49:
  • No CAN-bus response
  • need direct access to debug
• tray 8 (GMT tray):
  • TDIG #4 is missing in CAN-bus response;
  • 1st half of tray reports wrong bunch crossing
  • 2nd half is missing data
• tray 48:
  • CAN-bus and firmware are fine;
  • trays does not show any data through DAQ path
• tray 64:
  
  • TDIG #6 is missing in CAN-bus response;
  • no headers in DAQ path from both tray halves 
• tray 78, 88:
  • firmware reports fine
  • 1st half tray does not show up (TDIGs do not report to CAN-bus?)
  • 2nd half tray does show data.
• tray 101 (similar behavior as tray #8, but not a GMT tray)
  • TDIG #2 is missing in CAN-bus responses
  • 1st half is missing in DAQ
  • 2nd half missing (wrong?) bunch ID
  • tray is inaccessible, behind TPC support arm
• tray 102:
  • bad HV cable, inaccessible
• tray 119:
  • HPTDC error "0x6"
  • problem with first half of tray(?)

Trays 78, 88, and 119 could be partially recovered if we allow the tray errors to be ignored by DAQ. 

Update [June 6, 2023, Geary Eppley]:

• two additional trays removed from DAQ in May: trayIDs 16 and 67
• the following trays are masked out of TOFmult in trigger:
  • 4: hot 4 bit
  • 43: open connection, behind TPC support
  • 85: hot 24 bit, stepped on during TPC sector-21 repair
  • 100: stuck "1" bit, came back Jan.5,'22
  • 103: open connection, behind TPC support
  • 104: hot 8 and 16 bit
  • 117: tray masked Jan.27,'21, "1" bit hot