------------------------------------------------------------------------------ | Warm/Cold acceptance tests of modules arriving at CERN | ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ | Tests prior to mounting of the PSB boards, after module arrival | ------------------------------------------------------------------------------ 1.Check torque of all tie-rods --> adjust First tests should be done with the rear modules - if these tests are really necessary. For the front modules the first plate would have to be dismounted! 2.Mechanical 'Go-No Go' test: use special template(s) of outer (inner) connecting bar (--> Roy). 3.Test connection of all HV lines from HV-patch panel to HV strip line connectors. Disconnect HV connectors and measure R between corresponding 2 lines, compare with measurement at home lab. 4.HV test: ground all signal lines at PSB connector, HV = 2.0 kV 5.Capacity measurement: all PSB input lines: compare with 'standard' values. Acceptance window +- 5 % ??? (has to be < 1/16, 1/8) ------------------------------------------------------------------------------ | Mount PSB boards | ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ | Tests after mounting of the PSB boards | ------------------------------------------------------------------------------ 6.Do full warm calibration: a) test of correct cabling calib. line <-> readout channel b) compare gain of each readout channel for each calibration line (25 % effect if PA is dead) with PSB lab. measurement value. ------------------------------------------------------------------------------ | Place module into cryostat (if beamposition, rotate) | ------------------------------------------------------------------------------ 7.Do HV Test (1.5 kV) 8.Do full warm calibration: a) test of correct cabling calib. line <-> readout channel b) compare gain of each readout channel for each calibration line (25 % effect if PA is dead) with PSB lab. measurement value. ------------------------------------------------------------------------------ | Cool down, fill LAr | ------------------------------------------------------------------------------ 9.Do HV Test (1.8 kV) 10.Do full cold calibration: a) compare gain of each readout channel for each calibration line (25 % effect if PA is dead) with PSB lab. measurement value. ------------------------------------------------------------------------------ | Warm Up | ------------------------------------------------------------------------------ 11.Do HV Test (1.5 kV) 12.Do full warm calibration: a) compare gain of each readout channel for each calibration line (25 % effect if PA is dead) with PSB lab. measurement value. ****************************************************************************** For further discussion a group has been set up: Chekulaev, Kazarinov, Oram, Schacht, Snessarev ---> get final proposal ******************************************************************************