Section/X/Y |
Time |
Description |
Comment |
Voltage distribution / control box 31 |
31.05.08 13:00 |
Replaced with the spare one |
Positive LV seems to be unstable in all output connectors. Old serial number 46, new serial number 43. DB is updated accordingly 31 May 2008, 13:00 |
M/52/12...M/52/51 |
31.05.08 13:00 |
Fuse in 26/1 had been replaced, therefore line is plugged back from 25/5 to 26/1. |
Mapping in DB is updated accordingly 31 May 2008, evening |
O/38/06...O/38/57 |
29.05.08 ?:?? - 31.05.08 13:00 |
Short circuit in power line 24/4 (+6V LV chains) |
Damaged fuse. Line is re-plugged to spare 24/7. Mapping in DB is updated accordingly 31 May 2008, evening |
M/09/12...M/09/51 |
26.05.08 ?:?? - 28.05.08 ??:?? |
Short circuit in power line 6/7 (+6V LV chains) |
Damaged fuse, replaced |
O/20/06...O/20/57 |
Short circuit in power line 8/4 (+6V LV chains) |
I/45/14...I/45/49 |
26.05.08 ?:?? - 28.05.08 ??:?? |
Short circuit in power line 21/0 (+6V LV chains) |
M/53/12...M/53/51 |
Short circuit in power line 26/0 (+6V LV chains) |
M/55/12...M/55/51 |
Short circuit in power line 27/6 (+6V LV chains) |
M/54/12...M/54/51 |
Short circuit in power line 27/7 (+6V LV chains) |
M/63/02...M/63/51 |
Short circuit in power line 28/0 (+6V LV chains) |
M/62/12...M/62/51 |
Short circuit in power line 28/1 (+6V LV chains) |
O/43/06...M/43/57 |
Short circuit in power line 25/4 (+6V LV chains) |
26.05.08 Power Cut |
MARATON C-side channel 4 |
22.05.08 morning - 22.05.08 17:00 |
Was in error state. Last current reading 23A(!) |
Simple switching OFF/ON helped. Consumptions checked, OK |
O/34/6...O/34/57 |
? 21.05.08 16:30 - 22.05.08 20:00 |
Abnormally high current consumption from AGILENT provokes trip of OV protection relays |
Malfunctioning C-W base (cell O 34/19), replaced. PM id and HV setting are updated in DB 23 May 2008, 15:00 |
M/52/12...M/52/51 |
? 21.05.08 16:30 - 21.05.08 21:00 |
Short circuit in power line 26/1 (+6V LV chains) |
Damaged fuse. Line is re-plugged to spare 25/5. Mapping in DB is updated accordingly 23 May 2008, 15:10 |
21.05.08, ~16:00 Massive OV protection faults over all ECAL (both sides) for reason unknown |
All Ecal channels |
08.05.08 11:00 |
Nominal settings for ECAL HV were changed in Calo DB to follow the rule [ 10 + 7. x sin(theta) ] GeV of transverse energy for an upper limit of ECAL dynamic range |
The earlier rule was 10GeV of transverse energy |
O/60/32...O/60/57 |
29.04.08 8:50 - 01.05.08 14:00 |
Short circuit in power line 32/6 (+6V LV chains) |
Fixed (malfunctioning C-W base replaced) |
I/19/14...I/19/49 |
09.04.08 ?:?? - 11.04.08 ??:?? |
Short circuit in power line 12/1 (+6V LV chains) |
Damaged fuse, replaced |
M/00/12...M/00/51 |
Short circuit in power line 5/0 (+6V LV chains) |
M/01/12...M/01/51 |
Short circuit in power line 5/1 (+6V LV chains) |
M/08/12...M/08/51 |
Short circuit in power line 6/6 (+6V LV chains) |
M/10/12...M/10/51 |
Short circuit in power line 7/0 (+6V LV chains) |
08.04.08 Power Cut (?rumors) |
In these cells week or absent LED signal is observed.