Hi, If the T3 problem is cause by the large particles flux than we should observe a significant increase of the T3 anode currents. But, maybe during the T4 and T5 scan runs, by a mistake, the threshold was lowered on T3? Pawel. Ian Bearden wrote: > If BFS is at 3 and FFS is at 12 degrees, the reason T3 is not working might > be that it is drowning in particles. In T1 we have something like 6-7 local > tracks, when T1 sits behind a magnet (which is on, and sweeps many particles > away!). Perhaps T3 should be turned off when it is not shielded by the FFS. > Ian > > > -----Original Message----- > > From: owner-brahms-l@bnl.gov [mailto:owner-brahms-l@bnl.gov]On Behalf Of > > Apache > > Sent: Friday, October 05, 2001 6:12 AM > > To: brahms-l@bnl.gov; olchansk@bnl.gov; videbaek@bnl.gov > > Subject: Shift report 20011005 16:00-24:00 > > > > > > > > ------------------------------------------------------------ > > Date: Fri Oct 5 00:12:18 2001, Shift: 16:00-24:00 > > Supervisor: hiro, with: > > Log book#9 pages 91 - 93 > > > > Shift Summary: > > ------------------------------------------------------------ > > 1. beam for most of the shift > > It looks there is more Ions > > 2. T5 scan run > > run 5136 T5 Anode default > > run 5137 T5 Anode +20V from default > > run 5138 T5 Anode +40V from default > > run 5139 T5 Anode -20V from default > > run 5140 T5 Anode default, threshold=3.2V > > run 5141 T5 Anode default, threshold=2.9V > > > > T4 scan run > > run 5142 T4 Anode default > > run 5143 T4 Anode +20V from default > > run 5144 T4 Anode +40V from default > > run 5146 T4 Anode -20V from default > > run 5147 T4 Anode default, threshold=3.0V > > run 5148 T4 Anode default, threshold=2.7V > > > > People who are looking for DCs should look these run. > > > > To study background. > > Data run: 5150 > > FFS at 12 deg at 1/5 field > > BFS at 3 deg at 1/5 field > > MRS at 60 deg at 700A > > > > > > 3. DAQ, T3-map errors. Here is the error in DAQ. > > ( > > T3-map error > > non-fatal unpakcing errors > > fatal unpakcing erros, fatal > > truncated fastbus data: current limit (set my readout list ) is 8000 > > ) > > > > T3 does not seem to be working. > > > > > > ------------------------------------------------------------ > > > > -- ---------------------------------------------------------------------- | Pawel Staszel | | Niels Bohr Institute Tb 8 email: staszel@nbi.dk | | Blegdamsvej 17 phone: (+45) 35 32 53 51 | | København Ø FAX: (+45) 35 32 50 16 | | Danmark | ----------------------------------------------------------------------
This archive was generated by hypermail 2b30 : Fri Oct 05 2001 - 04:29:22 EDT