Subject: Shift report 23-Aug-00/25-Aug-00
Nicola.Zaccheo@lngs.infn.it
Date: Fri Aug 25 2000 - 10:29:39 EDT
Data shift report (23-Aug-2000 to 25-Aug-2000)
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by Nicola Zaccheo
From run 19855 to 19864
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I returned from my vacations on Wednesday, 23th of August.
After the MACRO shut down occured the 4th of August, there were several
problems with the apparatus, mostly already fixed.
I found the following:
- 5W03-0 started showing a signal with a low gain from run19796 (first
good run after the black-out) and it was practically dead last
Wednesday. After checking PMT HV base, HV cable and after trying
to raise the HV value w/o effect on the PMT signal, I found that
the signal RG58 cable was in a short circuit caused by the connector
on the fanout side..After replacing this connector the 5W03-0 PMT
signal appeared again (it is a good signal).
- A lot of "fake" LED/CAL hits on the uVax3 SPU (7000-8000 hits).
Last Wednesday I fixed this problem with a power ricycling of the
corresponded NIM crate + LEMO connectors screwing.
- There are some "fake" (20-30 per run) Stop Master latches on SM5@CENT.
I think they are due to the box 5C02-0. In the data I found a number of
events (compatible with the "fakes" number) in wich only 5C02 fires and
with the following event decoding:
>triggers > 7:CIT_MONO
>eqp32(SP)w1> 3:TOHM5
>eqp32(SP)w2 >
>eqp32(SP)w3> 7:TOHM
WFSTPSM5/F3A0 /TRGPAT> 1:CITm
WFSTPSM5/F2A0:7/TRGTIM> 1(CITm): 0 2(ERPM):10016 3(STmn):10016
4(FMTm):10016
WFSTPSM5/F2A0:7/TRGTIM> 5(SPAM):10016 6(LIPT):10016 7(xSTP):10016
8(HIPT):10016
WFSTPSM5/F5A0 /CITPAT> 2:CENT 14:EMPT
WFSTPSM5/F4A0:7/CITTIM> 1(CENT): 0 2(BOTT): 9760 3(WEST): 9760
4(EAST): 9760
WFSTPSM5/F4A0:7/CITTIM> 5(NorS): 9760 6(TOP ): 9760 7(SM-1): 9760
8(SM+1): 9760
>eqp27(CIT-LOWtrg):
>eqp27(CIT-LOWact): 5C02
There is no trigger but only activity for this tank(!!??!!). This is one
of the cases that produce "fake" latches as Sophia pointed out some
time ago.
As I found in the last SM5 PMTs check, 5C02-0 has a bad signal.
Furthermore, its TOHM lower LED is now stuck but its TOHM trigger rate
is not so high (~3mHz).
- 5B13 and 5B14 are dead on PHRASE/LIP because of a broken PHRASE module.
The "pisani" told to Roberto to leave it as is.
TRIGGER RATES:
TOHM --> 4T13 ~4mHz, 5B13 ~6mHz, 5T16 ~5mHz
ERP --> 3B07 ~5.2mHz
LIP --> 1B12 ~0.4mHz, 1B14 ~0.7mHz, 1B16 ~0.2mHz(!), 1C08 ~1.1mHz,
1C11 ~1.2mHz, 2E10 ~15.5mHz, 3E04 ~7mHz, 5T02 ~0.4mHz,
6C09 ~1mHz, 6C10 ~1.1mHz, 6T12 ~11mHz
ERP-GC --> 6W12 ~90mHz, 6S01 ~60mHz, 6S04 ~95mHz, 6S07 ~90mHz.
PHRASE --> 5B04 ~30mHz, 6E12 ~25mHz
FMT:
No problems reported
LAMOSSKA:
There are still not justified LAMOSSKA triggers for LAM50. Sometimes
also for LAM60 and LAM20.
CSPAM/ERP efficiency:
The boxes with systematic inefficiency: 3B07 (~52%), 3B11(~78%),
3B12 (~70%), 5W03 (~58%) and 6T07(~76%).
ERP/LIP efficiency:
Low efficiency for 1B08, 1B09, 1B10, 1B12, 1B16, 1C08, 1C11, 1C15, 1T10,
1T13, 1T16, 4C08, 5C11, 5C13, 5T02, 5T03, 6B07, 6B10, 6C09, 6C10 and 6T11.
SPU: still hits on ERPI, ERPII, SPARE, LAS and LED on uVax1 (sometime 1/2
VETO bits too). As mentioned before, the fake LED/CAL hits on uVax3
SPU have been eliminated last wednesday.
STOP MASTER:
"Fake" latches on SM5@CENT (see previous comment).
CALIBRATION:
LED/TDC and LASER calibrations for full MACRO last Wednesday except
LASER lower on uVax2 still broken (we had no time for full debugging).
CALMOD:
2 weeks (muon data only) analysed for ERP constants, ref. run 19790
and 19819. I have not yet updated the CALMOD DB for the last week
because there are problems on the uVax3. (Could this be due to
the fact that for all these runs there are a lot of LED/CAL hits
on uVax3 SPU??).I have to investigate better the next week..
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