Yinzhi Huang, Caltech
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1. MACRO welcome Valeriano Marrelli, a new member of the technical team
at Gran Sasso!
2. People present in the tunnel during last 12 days: YH, EK, FC, IK, IAG,
MO, NZ, and VM.
3. The DGN can not display since Mar.28th.
4. During this shift, 57 runs(Run 15570 - Run 15626) were collected,
including 7 runs for PISA-only.
5. The runs before Apr.1st(Run 15569 - Run 15610) are rather good except
Run 15579 - 15581 for PISA only on Mar.24th - 25th. Some other runs
during this period which were stopped by shifter or ended abnormally
are the following:
Run 15578 - Stopped by remote because some trouble with uVAX3 at 18:18
Mar.24th, and can not get in the tunnel by heavy snow.
When we got in on Mar.25, found the trouble was from the
CAMAC of ST in Italian side. When they fixed it, went back
to normal. Following three runs are PISA-only in order to
calibrate uVAX1.
Run 15584 - Stopped by Italian shifter for uVAX5 system error reported,
no real problems, so started next run just a few minutes
later.
Run 15592 - Crashed at 5:11am, auto restart procedure successfully
started next run.
Run 15606 - Ended abnornally, started next run manually.
Run 15610 - Stopped by shifter in order to calibrate uVAX2.
6. After Apr.1st(calibration for uVAX2), trouble happened with more runs
as following:
Run 15613 - Short run. Stopped because no events were seen on uVAX1,
2, & 3. Next run is PISA-only.
Run 15615 - uVAX1 set to GUT19_NOSM1WFD.LIS1 because uVAX1 didn't read
SM1 WFDs well.
Run 15616 - The same as for Run 15615.
Run 15617 - The same as for run 15615. Stopped manually in order to
exclude uVAX1 to fix SM1 WFD problem.
Run 15618 - Excluded uVAX1, but shortly after stopped manually because
of uVAX2 & 3 trigger problems. Next run is PISA-only.
Run 15623 - It's good, but stopped manually by Italian in order to
exclude uVAX2 trying to solve DGN problem.
Run 15624 - Without uVAX2. Stopped manually to restart full detector.
Run 15625 - Apr.3 16:00, many CAEN HV alarms M:? Very high dead
time on uVAX2. Found S3 M6 H3 off. After switching
it on, the run return to normal.
7. Calibration:
On Mar.25th, uVAX1 calibrations:
a) LED, TDC: Successful.
b) Lower-LASER: After some problems, 12:31-13:00 run successfully.
c) ATTICO-LASER: Not good.
d) LaMOSSKa: Good.
e) LED/MONO part1: Successfull.
f) LED/MONO part2: Successfull.
On Apr.1st, uVAX2 calibrations:
a) LED, TDC: Successful.
b) Lower-LASER: Successful.
c) ATTICO-LASER: Good.
d) LaMOSSKa: Good.
e) LED/MONO part1: Successful.
f) LED/MONO part2: Successful.
8. Measurements were performed regarding START/STOP signals for the WFDs
triggered by the problem above(item 6). Suspicions for problems on
SM1 and SM5 start signals were not confirmed by the WFD experts.
9. One of the 2 DECservers for the secondary ETHERNET is broken since Apr.
1st.