e.guschin (inr,moscow) 17 july 2007 calo commissioning group meeting cern status of ps/spd led...
TRANSCRIPT
E.Guschin (INR,Moscow)
Status of PS/SPD LED system
E.Guschin (INR,Moscow)
Status of LED systemSince last meeting it is done:
1) monitoring system labeling (cables on detector) PS5-7 2) mapping of PS5-73) cable delays are measured on PS5-7 and completed on SPD7-8
still remaining work to do:– To replace labels on trigger/power cables: PS4– Pulse test of trigger cables on detector/ measurement of delays: PS4
(SPD6 - partially)– Check of mapping:PS4– Connection the LED trigger/power cables inside the electronic boxes is
done, PS4 to be completed after delays measurement.
Problems: access to PS4 (green nacelle)
E.Guschin (INR,Moscow)
Production of LED system CU
• All minor final corrections are done for production of final version CU.
• 12 (+1) CU are manufactured and tested in INR. One of spare (the 14-th unit) needs 3 LV regulators. We need a decision to purchase spare barrette of 31.
• One of 12 final CU is already in CERN. The first half and second halves of rest (6 and 6) is to be at CERN at July,24 and 28.
E.Guschin (INR,Moscow)
Work on cables to detector - rack
Power (44) and trigger (100) cables are to be equipped with connectors and all delays are measured (the rack connectors are checked!).
E.Guschin (INR,Moscow)
Test of LED monitoring system
• Now it should be possible to do regular test with FE read-out on PS and test setup on SPD side.
• To have possibility for our group to test LED system with FE in more autonomic regime the work on learning an operational control is started (thanks to our CF colleagues) but not yet completed!
• Sergey completed PVSS courses, the main parameters of LED control and the organization of monitoring system together with the detector configuration are to be available in PVSS by end of July.
E.Guschin (INR,Moscow)
First test of LED system
• Some data are taken with LED system and FE read-out from PS1.
• Analysis of data is in progress, should be completed with results of preliminary test of dead LED channels etc.
• One of possible problems: access to the detector is needed in some situations.
E.Guschin (INR,Moscow)
PS1 bottom “C” side
Left cable Right cableCentral cable