Minutes of the May 19, 2005 US ROD meeting
Follow up on action items and new action items
- Scripts to compare MR with module data:
Steve has it working.
Still fine-tuning of cuts needed. Steve will also look at FNAL data.
Progress. FNAL data still to do. Problem with saturation in inv on mode.
- UCSB: Sort out problem with bad lemo.
Spares on the way from FNAL.
- UCSB: DS rod bad noise. But using modules that went
through severe cycles.
Need to put new modules on it and retest.
On back-burner until modules become available.
In the meantime take a couple of these modules off and see what they look like on ARCS.
Look basically OK on ARCS, with lots of bad channles.
Next: put DS rod back together, retest.
- UCSB: Tests of rod 178 (header-error rod from FNAL) continue. Swap
module that gives errors to try to correlate with either rod or module.
Put this on back-burner now that production has started.
- Lt SW bug that causes bad pulse shape. Valeri on it.
May be OK if change parameters of CMN subtraction.
Jim fixed at FNAl, need to propagate to FNAL.
- FNAL: Tested bunch of new HPK rods in SR. Two out of six have broken or shorted
termistor. Strange because Lenny says that these are chcked on rod frame.
Possibilities: bad check on rod frame, or bad connection through flat cable,
or bad DCU on hybrid.
Check module fast-test
Probe with multimeter
No news
-
Wim request inclusion of PIA reset in scenario after connectivity test.
Done
-
FNAL: some bad DCU voltrages on SR, but not on MR. Needs fix.
Not clear. Wim committed fix.
-
FNAL sees problem in SR GUI connecting to DB.
Jim to fix.
Done.
- New action item
Javier has new DefectAnalyizer. Steve did not know about it.
Get new code.
General
Doing I2C tests requested by CERN
- Check voltages on ICC cards and CCUM.
OK at both sites.
- Test wih disconnected HV supply and no cooling using script from Wim.
Bad at both sites.
- Replace module at position 6, test with different hybrids and modules.
In progress.
UCSB
Out of 20 rods built, 12 tested in MR.
I2C errors on position 4 also. header errors too.
Chiller moved closer to freezer.
Evidence for leak in long pipes, probably from non-compliant o-rings.
FNAL
20 rods made. 19 passed SR, 1 failed with FEC errors.
Needs investigation.
12 tested in MR. I2C and header errors. Header errors more frequent on 6.