Hi Truls, I have a bit of experinece here, since I strugled to fix the 62 gev pp data set for tfw2. Some observation from my notes. (for 62 gev pp) many scripts seems to have been run in general blindly, and then committing to DB w/o checks is I think the main reason. Tfw2 pedestal: Many channels were re-gained by accepteing 'wide' pedestal width. This is allowbale for tfw2 where the tubes have large gains, thus the wide pedestal does not matter. Up to width ~20 (25) was accepted. Only tube 5 and 8 should be really out. Tfw2 ADC gains. The scripts have ranges for tubes with allowed tubes gains. Some of these were very off. I went through all adc to find and set the correct range. w/o this you also use channels. slat 30-32: memory lapse - yes there was a problem, and I fixed it; but do not rember if it was in the datamaps for online or a later stages. I wouldn't worry though. In general I found there are too many dead slats below 40 in any case. On the cucu-62. This sounds bad with no slats above 60. How could this have happened? Someone else is the 200 geV cucu ok? On the 45 deg auau. What is the field settings? If high I would think the proj hit distribution should split, due to the longer distance. How does the single match distribution look on the tfw2? This may be a multiple hit issue Flemming -------------------------------------------- Flemming Videbaek Physics Department Bldg 510-D Brookhaven National Laboratory Upton, NY11973 phone: 631-344-4106 cell: 631-681-1596 fax: 631-344-1334 e-mail: videbaek @ bnl gov ----- Original Message ----- From: "Truls Martin Larsen" <trulsml_at_nbi.dk> To: "Brahms Devel" <brahms-dev-l_at_lists.bnl.gov>; "Per Jespersen" <kriger_at_fys.ku.dk> Sent: Thursday, May 31, 2007 6:26 AM Subject: [Brahms-dev-l] TOFW and TFW2 calibs for CuCu and AuAu @ 62 GeV > Hi, > > after a closer examination of the PID in the AuAu and CuCu 62GeV I've > found the following for the MRS pid: > > CuCu_at_62: Run 13654 - 13924 > TOFW: Needs new topTdcOffset, botTdcOffset, deltaDelay, timeOffset, > effSpeedOfLight, topSlewPar1, topSlewPar2, botSlewPar1, botSlewPar2. > The entire set of data only has slat 33-60 with reconstructed hits. > > Top and Bot TDC offsets are the ones with the most -1111 commited > values... > and the slewing commited is -1111 for/from run 13608... > > TFW2: Needs new pedestals! there are 5-6 dead slats in more than half of > the run because -1111 was commited as the pedestal value (should only be > 2 dead slats out of the 41). Then I guess the rest of calibs needs to be > redone after that... > > I'll redo the TFW2 pedestal calibration! > > AuAu_at_62: > TOFW: Looks good. (Though its strange that slat 30, 31 and 32 does not > work since they work in run6 pp_at_62...) > > TFW2: 45 deg A and B looks strange, see attached plot of hits that have > an assosiated track. All calibs seem to in good shape. It seems this > track projection to TFW2 is really bad for all settings, see attached > plot. This could be due to something in the making of the DSTs. I'll > look into the dst macro... > > pp_at_62: > Nice data set :-) > > Cheers, > Truls > -- > *---------------------------------* > |http://www.nbi.dk/~trulsml / > |Truls Martin Larsen / > |trulsml_at_nbi.dk . > |The Niels Bohr Institute // > |Work Address: / \0 > |Blegdamsvej 17 /\_/ > |DK-2100 Copenhagen / / > |Tel: +45 353 25269 / -- > | /_/ | > |Home address: / \ > |Holger Danskes Vej 28H| ' > |DK-2000 Frederiksberg | > |Denmark | > |Mob: +45 20974802 | > *----------------------* > -------------------------------------------------------------------------------- > _______________________________________________ > Brahms-dev-l mailing list > Brahms-dev-l_at_lists.bnl.gov > https://lists.bnl.gov/mailman/listinfo/brahms-dev-l > _______________________________________________ Brahms-dev-l mailing list Brahms-dev-l_at_lists.bnl.gov https://lists.bnl.gov/mailman/listinfo/brahms-dev-lReceived on Thu May 31 2007 - 07:37:22 EDT
This archive was generated by hypermail 2.2.0 : Thu May 31 2007 - 07:37:34 EDT