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LAV tests at CERN Francesco Gonnella TDAQ Commissioning 16 April 2014 1 Francesco Gonnella - Laboratori Nazionali di Frascati.

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Presentation on theme: "LAV tests at CERN Francesco Gonnella TDAQ Commissioning 16 April 2014 1 Francesco Gonnella - Laboratori Nazionali di Frascati."— Presentation transcript:

1 LAV tests at CERN Francesco Gonnella TDAQ Commissioning 16 April Francesco Gonnella - Laboratori Nazionali di Frascati

2 Status of LAV stations 16 April 2014Francesco Gonnella - Laboratori Nazionali di Frascati2 LAV updated situation LAV stationHVCratePSRasPi FEE Boards FEE firmware Signal cable CAN chain cables CAN terminatorDongleTDCMech.TEL 62TEL62 fwTDCBs A1 okyes yes noyes old ok ,1,2 A2 okyes yes old ok ,1,2 A3 okyes yes old ? ,3 A4 okyes yes noyes new ? ,1,2 A5 okyes yes noyes no A6 offlineyesnoyes yes ECN3 no nose supportno A7 offlineyesno yes ECN3no ECN3 no nose supportno A8 offlineyesno yes ECN3no ECN3 no nose supportno A9 storage room ?? no storage roomno A10 storage room ?? no storage roomno A11 Frascati ?? no storage roomno A12 Frascati ?? no??no

3 LAV detector Reparation 16 April 2014Francesco Gonnella - Laboratori Nazionali di Frascati3 LAV1 Signal channels not working: L1ch27, HV problem LAV2 L4ch21, L4ch23, draw few current, but no signal no ground reference L4ch22, short circuit at 100V, HV cable is OK, on the flange 3.4 Mohm LAV3 L0ch4, ZERO HV current LAV4 L2ch4, ZERO HV current, no signal LAV5 All channels appear to speak too much... L1ch7 no signal, HV OK L2ch14, HV card tripped, let's change it L4ch2, ZERO HV current L4ch9, HV recheck, speaks too few.... LAV6 All OK LAV7 All OK LAV8 L1ch15, no signal L1ch4 tripped, to check with or without HV cable, etc. BANS 4-7 of layer1, recheck! From ch0 to ch7 HV tripped??? Fixed HV Board Changed HV Cable Fixed HV Cable Fixed HV Cable Fixed

4 LAV readout  Only LAV1 and LAV2 are currently equipped with working TEL62s (old) and TDCBs  LAV3 TEL62 has a faulty DDR and a faulty TDCB connector, unfortunately not on the same slot…  LAV4 is equipped with a new TEL62 and 3 TDCBs v7, I hope to make it run in the next days (with help from Ppisa)  Noisy channels and dead channels on LAV1 and LAV2 were fixed. Problems were due to:  TDC cables (extremely fragile connection to TDCBs) 2 replaced  Signal cables 1 was replaced  Waiting for a detailed analysis of data taken last night 16 April 2014Francesco Gonnella - Laboratori Nazionali di Frascati4

5 “Let there be light” (again) 16 April 2014Francesco Gonnella - Laboratori Nazionali di Frascati5 LAV1 LAV2 LAV3

6 Last-night data: occupancy 16 April 2014Francesco Gonnella - Laboratori Nazionali di Frascati6

7 Last-night data: time over threshold 16 April 2014Francesco Gonnella - Laboratori Nazionali di Frascati7 TDC unit = 98 ps LAV1LAV2

8 16 April 2014Francesco Gonnella - Laboratori Nazionali di Frascati8 TDC unit = 98 ps

9 Time difference between L and H 16 April 2014Francesco Gonnella - Laboratori Nazionali di Frascati9 TDC unit = 98 ps

10 Last-night data: Block-Block correlation 16 April 2014Francesco Gonnella - Laboratori Nazionali di Frascati10

11 Thanks  Thanks to Tania and Vincenzo for their excellent job  Thanks to Roberto Piandani for spending these last two weeks on Skype with me 16 April 2014Francesco Gonnella - Laboratori Nazionali di Frascati11

12 Thank you for your attention 16 April


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