CAL DQM January 2004 Thomas Schörner-Sadenius DESY, 28 January 2004
DESY, 28/01/2004TSS: CAL DQM 21-28/01/20042 This CAL DQM Week … … was actually my first week on shift ;-) … was rather busy and showed several problems: 1.Friday, Saturday: Funny behaviour of module B17: From time to time all channels dead; scope shows shaky signal with reduced amplitude. Suspicion: local clock signal to front-end card corrupt? Problem occurred once more. 2.Saturday/Sunday: Readout had to be restarted several times by the shift-crew because of hand-shake problem with EVB. 3.Sunday: Very high dead-time (80%) and CAL busy. Before, CFLT had closed some hot cells. Mauricio discovered bad PED sigma in B10. Bad channel update cured (?) the problem. Now bad channels gone again.
DESY, 28/01/2004TSS: CAL DQM 21-28/01/20043 Details I 21/01/04: CAL_QUICK_CALIB calibration bad channels, 2 holes 22/01/04: QIN /3(1)/0 UNO /0/0 PED /0/0 calibration 3360 FEC (fast) calibration 3361 trimming UNO /100/23 QIN /2/1 PED /7/1 calibration bad channels, 0 holes
DESY, 28/01/2004TSS: CAL DQM 21-28/01/20044 Details II 23/01/04: Michele discovered funny B17 behaviour: all channels bad, UNO and QIN show only half the signal. Scope study with Isabell shows flickering B17 signal. Suddenly flickering disappears (did we touch cables on third floor?). adc2volt ec_1 run 16805, adc2volt version 2292 UNO QIN PED calibration bad channels 24/01/04: CAL_QUICK_CALIB UNO 2/2/0 QIN 0/0/0 PED 0/0/0 calibration bad channels, 2 holes
DESY, 28/01/2004TSS: CAL DQM 21-28/01/20045 Details III 25/01/04: 6 am: Shift crew: restart the readout (hand-shake with EVB does not work). 7 am: high dead-time (80%) and CAL busy ???? PED sigma energy problem in PHYSICS runs. CAL_QUICK_CALIB UNO 1/4/0 QIN 0/9/0 PED 0/9/0 calibration bad channels, 2 holes Note: B10 problem shows up in the bad channels!
DESY, 28/01/2004TSS: CAL DQM 21-28/01/20046 The B10 problem
DESY, 28/01/2004TSS: CAL DQM 21-28/01/20047 Details IV 26/01/04: CAL_QUICK_CALIB calibration bad channels, 2 holes 27/01/04: UNO /2/0 QIN /0/0 PED /0/0 calibration bad channels, 2 holes FEC (ec_1/ /16827) calibration 3368 trimming UNO QIN PED calibration bad channels, 2 holes
DESY, 28/01/2004TSS: CAL DQM 21-28/01/20048 Status (calibration 3369) 235 bad channels (103/105/27) 2 holes B14 Tower 7 Typ 1 : UNO mean too low B22 Tower 4 Typ 2 : UNO RMS too big / UNO mean too low. 2 bad front-end cards F12 Tower 6 : pipeline gain spread F8 Tower 14 : pipeline pedestal spread plus problems in B2, B10, B12, B16 FCALBCALRCALTOTAL FEC UNO QINJ6219 PED94013 TOTAL