10.40 DAQ stalled AIDA75_30 c. 01.36
SYNC errors since baseline (start of AIDA75) - attachment 1
SYstem-wide checks ASIC clock timestamp and clock status OK for all FEE64s
Power-cycle & reboot
11.14 AIDA76
ASIC settings 2016Jun12-10.10.08
BNC PB-4 amplitude 50,000
11.19 AIDA77
BNC PB-4 amplitude 30,000
11.23 AIDA78
BNC PB-4 amplitude 10,000
11.28 AIDA79
BNC PB-4 amplitude 5,000
All *.L histograms saved c. 11.30 Thursday 16 June 2016
Example spectra - attachment 5
11.34 Water on floor by AIDA NIM bins/forward AIDA stand/EURICA - it would appear
that one or more cluster LN2 cryostat inlets have thawed are or thawing - failed fill
and/or blocked manifold?
Julabo FL11006 water level and flow looks OK
FEE temperatures OK - see attachment 4
Detector bias off
FEE64 power off
All AIDA power off
Source of water was determined to be wheeled air dehumdifier/cooler used to cool crates
in 19" rack to right of AIDA (looking upstream). This had a small tray tank to collect
water which was full to overflowing.
2x 60Co sources (#2530 and CD395) returned to cupboard B3F (between E12 & E17 stairwells)
|