Difference: LHCbCaloEcal (1 vs. 20)

Revision 172008-08-20 - unknown

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META TOPICPARENT name="LHCbCalo"

Problematic cells

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Problematic channels / actions log

Section/X/Y Time Description
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Comment
08.04.08 Power Cut (?rumors)
09.05.08 Power Cut (?rumors)
16.05.08, afternoon Local Power Cut, A-side
17.04.08, morining Power Cut (short)
21.05.08, ~16:00 Massive OV protection faults over all ECAL (both sides) for reason unknown
26.05.08 Power Cut. Agilent's stayed ON while MARATONS were OFF (~1hour)
30.04.08 ~11:20 Power Cut
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
O/14/32..O/14/57 02.06.08 ~12:00 Box 4 / connector 5 - to be watched During the check of the fuses on the box #4 showed resistance 3.2 Ohm
O/12/32..O/12/57 02.06.08 afternoon Connector on the power line (4/0) replaced 3 June ~10:00. Bad connection quality
O/14/06..O/14/31 02.06.08 afternoon Connector on the power line replaced 3 June ~10:00. Line is connected to 8/0 (! previous one is 8/6) Bad connection quality. Mapping in DB is updated accordingly 3 June 2008, around 14:00
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
A-side, voltage distribution/control boxes 07-...06.08 Modification: 100 Ohm in MV chain + ordinary fuses in LV chains to shunt the resettable ones  
C-side, voltage distribution/control boxes 15-21.06.08 Modification: 100 Ohm in MV chain + ordinary fuses in LV chains to shunt the resettable ones  
ECAL A-side 02.06.08 ~10:00 Multiple short circuits in LV +6V Certainly provoked by somebody's activity, since OV protection relay states had been changed also
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/14/06..O/14/31 02.06.08 ~12:00 Reconnected from 4/5 to the spare 8/6 Showed short circuit in +6V (all power supplies were on). After immediate turning OFF of Agiltent/MARATON fuse successfully recovered in one hour, but showed resistance 3.6 Ohm. Mapping in DB is updated accordingly 2 June 2008, around 14:00
O/15/32..O/15/57 02.06.08 ~12:00 Reconnected from 4/6 to the spare 8/7 During the check of the fuses on the box #4 showed resistance 3.6 Ohm. Mapping in DB is updated accordingly 2 June 2008, around 14:00
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
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
I/45/14...I/45/49 26.05.08 ?:?? - 27.05.08 ??:?? Short circuit in power line 21/0 (+6V LV chains) Damaged fuse, replaced
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
O/43/06...O/43/57 26.05.08 ?:?? - 27.05.08 ??:?? Short circuit in power line 25/4 (+6V LV chains) Damaged fuse, replaced
M/53/12...M/53/51 26.05.08 ?:?? - 27.05.08 ??:?? Short circuit in power line 26/0 (+6V LV chains) Damaged fuse, replaced
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
M/55/12...M/55/51 26.05.08 ?:?? - 27.05.08 ??:?? Short circuit in power line 27/6 (+6V LV chains) Damaged fuse, replaced
M/54/12...M/54/51 26.05.08 ?:?? - 27.05.08 ??:?? Short circuit in power line 27/7 (+6V LV chains) Damaged fuse, replaced
M/54/12...M/54/51 02.07.08 evening - 03.07.08 14:45 Short circuit in power line 27/7 (-6V LV chains). Provoked by Xavier's tests of correct MV shut-down before switching off LV Line is re-plugged to spare 25/0. Mapping in DB is updated accordingly at the same time
M/63/02...M/63/51 26.05.08 ?:?? - 27.05.08 ??:?? Short circuit in power line 28/0 (+6V LV chains) Damaged fuse, replaced
M/62/12...M/62/51 26.05.08 ?:?? - 27.05.08 ??:?? Short circuit in power line 28/1 (+6V LV chains) Damaged fuse, replaced
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)
M/00/12...M/00/51 09.04.08 ?:?? - 11.04.08 ??:?? Short circuit in power line 5/0 (+6V LV chains) Damaged fuse, replaced
M/01/12...M/01/51 09.04.08 ?:?? - 11.04.08 ??:?? Short circuit in power line 5/1 (+6V LV chains) Damaged fuse, replaced
M/08/12...M/08/51 09.04.08 ?:?? - 11.04.08 ??:?? Short circuit in power line 6/6 (+6V LV chains) Damaged fuse, replaced
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
M/10/12...M/10/51 09.04.08 ?:?? - 11.04.08 ??:?? Short circuit in power line 7/0 (+6V LV chains) Damaged fuse, replaced
O/20/06...O/20/57 26.05.08 ?:?? - 28.05.08 ??:?? Short circuit in power line 8/4 (+6V LV chains) Damaged fuse, replaced
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
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Problematic channels / actions log

 
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Power supplies

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Power supplies

 
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ECAL exploits two types of power supplies:
  • low voltages (LV) are provided by MARATON power supplies located in the racks L3B01 (C-side) and L3B11 (A-side) on the platform on top of the detector;
  • medium voltages (MV) are provided by AGILENT power supply located in the barrack;

Operating rules:

  • Avoid unnecessary switching-on/switching-off of power supplies, especially - the MARATON ones;
  • After power cut: do not turn on low voltages immediately, but wait about 30 minutes - one hour;
  • In case of emergency shut-down: MV (AGILENT) should be turned off first. After that LV (MARATON) can be turned off, but not contra vise;
  • Each switching-on / switching-off of LV (MARATON) should be mentioned in CALO logbook together with the status of AGILENT power supply;

  • Correct procedure for complete shut down of the ECAL:
  1. Set zero high voltage (HV) codes on ECAL photomultipliers. Wait for confirmation from ECS software;
  2. Set zero LED intensity codes. Wait for confirmation from ECS software;
  3. Set zero medium voltages on Agilent power supply. Wait for confirmation from ECS software;
  4. Switch off low voltages. All four dedicated channels of MARATON power supply must be turned off at once;

  • Correct procedure to turn on the ECAL:

  1. Switch on low voltages. All four dedicated channels of MARATON power supply must be turned on at once.
    DO NOT TURN ON single channel, it can cause MARATON supply failure. In case of alarms / warnings, indicating 'short-circuits' in LV lines (a) make notice in CALO logbook and (b) contact experts;
  2. Enable high voltage on ECAL photomultipliers. By default it is disabled by overcurrent protection circuits. Protection can be removed by means of ECS software;
  3. Turn on medium voltages on Agilent power supply. Wait for confirmation from ECS software;
  4. Configure high voltages on ECAL photomultipliers. Do not exceed marginal gain value 3x10^5 . Configuration can take several minutes. When it is finished, check the status of overcurrent protection circuits. In case of alarms / warnings (a) make notice in CALO logbook and (b) contact experts;
  5. Configure intensities of ECAL LEDs;

Nominal settings and typical values for current consumption:

  • Low voltages (MARATON)
Side Rack Supply channel Voltage Current, no MV Current, Nominal MV Comment
C L3B01 1 +6.95V 10.0A 9.8A  
2 +6.98V 13.4A 12.9A  
3 -6.8V 16A 16A  
4 14.9V 5A 5A Shared with PS, consumption may vary
A L3B11 1 +7.0V 12.0A 11.6A  
2 +7.0V 11.9A 11.5A  
3 -6.88V 16A 16A  
4 15.0V 7A 7A Shared with PS, consumption may vary

  • Medium voltages (AGILENT) for phototubes

Side Supply channel Voltage Current, no MV Current, Nominal MV, PM HV=0 Current, Nominal MV, Nominal PM HV
C 3 80V 0.2A 0.48A 1.45A
A 1 80V 0.2A 0.51A 1.45A

Voltage distribution / control boxes

Side, PC SPECS master address Control box # SPECS slave address Serial number
C, ECHVC01W 18 (EHV5) 01 01 08
02 02 44
03 03 40
04 04 03
17(EHV4) 05 05 16
06 06 45
07 07 33
08 08 25
19(EHV6) 09 09 34
10 10 09
11 11 31
12 12 26
20(EHV7) 13 13 30
14 14 19
15 15 21
16 16 17
A, ECHVA01W 19(EHV2) 17 17 34
18 18 20
19 19 28
20 20 06
18(EHV1) 21 21 27
22 22 36
23 23 35
24 24 11
17(EHV0) 25 25 23
26 26 29
27 27 13
28 28 18
20(EHV3) 29 29 10
30 31 41
31 32 43
32 01 38
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PM HV / LED LV distribution / control boxes

 

Useful links

Revision 162008-08-18 - unknown

Line: 1 to 1
 
META TOPICPARENT name="LHCbCalo"
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Problematic cells

 

Problematic channels / actions log

Section/X/Y Time Description Comment
A-side, voltage distribution/control boxes 07-...06.08 Modification: 100 Ohm in MV chain + ordinary fuses in LV chains to shunt the resettable ones  
Line: 40 to 42
 
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)
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Cells with (presumably) damaged optical fibers of LED Monitoring system

In these cells week or absent LED signal is observed.

Side Section/X/Y R/O Crate/Slot/Channel Comment
C O/17/16 10/02/17  
O/18/17 10/02/26  
O/01/56 08/18/17  
O/31/57 10/20/31  
O/08/55 09/18/08  
A I/55/44 15/17/23  
I/32/14 15/02/00  
I/33/14 15/02/01  
I/32/16 15/02/16  
I/55/35 15/13/15  
I/55/36 15/13/23  
I/50/38 15/14/02  
O/37/21 19/03/29  
I/53/32...I 55/34 15/12/(21..23;29..31 and 15/13/(5..7) LED A3.11.4...entire bundle is damaged
I/53/38...55/40 15/14/(5..7;13..15;21..23) LED A3.08.4, entire bundle is damaged
O/36/54...39/57 19/14/(4..7; 12..15; 20..23; 28..31) LED A1.05.1...entire bundle is damaged
 

Power supplies

Revision 152008-07-08 - unknown

Line: 1 to 1
 
META TOPICPARENT name="LHCbCalo"

Problematic channels / actions log

Section/X/Y Time Description Comment
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A-side, voltage distribution/control boxes 07-...06.08 Modification: 100 Ohm in MV chain + ordinary fuses in LV chains to shunt the resettable ones  
M/54/12...M/54/51 02.07.08 evening - 03.07.08 14:45 Short circuit in power line 27/7 (-6V LV chains). Provoked by Xavier's tests of correct MV shut-down before switching off LV Line is re-plugged to spare 25/0. Mapping in DB is updated accordingly at the same time
C-side, voltage distribution/control boxes 15-21.06.08 Modification: 100 Ohm in MV chain + ordinary fuses in LV chains to shunt the resettable ones  
 
O/12/32..O/12/57 02.06.08 afternoon Connector on the power line (4/0) replaced 3 June ~10:00. Bad connection quality
O/14/06..O/14/31 Connector on the power line replaced 3 June ~10:00. Line is connected to 8/0 (! previous one is 8/6) Bad connection quality. Mapping in DB is updated accordingly 3 June 2008, around 14:00
O/14/06..O/14/31 02.06.08 ~12:00 Reconnected from 4/5 to the spare 8/6 Showed short circuit in +6V (all power supplies were on). After immediate turning OFF of Agiltent/MARATON fuse successfully recovered in one hour, but showed resistance 3.6 Ohm. Mapping in DB is updated accordingly 2 June 2008, around 14:00
Line: 142 to 145
 

Useful links

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Revision 132008-06-03 - unknown

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META TOPICPARENT name="LHCbCalo"

Problematic channels / actions log

Section/X/Y Time Description Comment
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O/12/32..O/12/57 02.06.08 afternoon Connector on the power line (4/0) replaced 3 June ~10:00. Bad connection quality
O/14/06..O/14/31 Connector on the power line replaced 3 June ~10:00. Line is connected to 8/0 (! previous one is 8/6) Bad connection quality. Mapping in DB is updated accordingly 3 June 2008, around 14:00
 
O/14/06..O/14/31 02.06.08 ~12:00 Reconnected from 4/5 to the spare 8/6 Showed short circuit in +6V (all power supplies were on). After immediate turning OFF of Agiltent/MARATON fuse successfully recovered in one hour, but showed resistance 3.6 Ohm. Mapping in DB is updated accordingly 2 June 2008, around 14:00
O/15/32..O/15/57 Reconnected from 4/6 to the spare 8/7 During the check of the fuses on the box #4 showed resistance 3.6 Ohm. Mapping in DB is updated accordingly 2 June 2008, around 14:00
O/14/32..O/14/57 Box 4 / connector 5 - to be watched During the check of the fuses on the box #4 showed resistance 3.2 Ohm

Revision 122008-06-02 - unknown

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META TOPICPARENT name="LHCbCalo"

Problematic channels / actions log

Section/X/Y Time Description Comment
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O/14/06..O/14/31 02.06.08 ~12:00 Reconnected from 4/5 to the spare 8/6 Showed short circuit in +6V (all power supplies were on). After immediate turning OFF of Agiltent/MARATON fuse successfully recovered, but showed resistance 3.6 Ohm. Mapping in DB is updated accordingly 2 June 2008, around 14:00
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O/14/06..O/14/31 02.06.08 ~12:00 Reconnected from 4/5 to the spare 8/6 Showed short circuit in +6V (all power supplies were on). After immediate turning OFF of Agiltent/MARATON fuse successfully recovered in one hour, but showed resistance 3.6 Ohm. Mapping in DB is updated accordingly 2 June 2008, around 14:00
 
O/15/32..O/15/57 Reconnected from 4/6 to the spare 8/7 During the check of the fuses on the box #4 showed resistance 3.6 Ohm. Mapping in DB is updated accordingly 2 June 2008, around 14:00
O/14/32..O/14/57 Box 4 / connector 5 - to be watched During the check of the fuses on the box #4 showed resistance 3.2 Ohm
ECAL A-side 02.06.08 ~10:00 Multiple short circuits in LV +6V Certainly provoked by somebody's activity, since OV protection relay states had been changed also

Revision 112008-06-02 - unknown

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META TOPICPARENT name="LHCbCalo"

Problematic channels / actions log

Section/X/Y Time Description Comment
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O/14/06..O/14/31 02.06.08 ~12:00 Reconnected from 4/5 to the spare 8/6 Showed short circuit in +6V (all power supplies were on). After immediate turning OFF of Agiltent/MARATON fuse successfully recovered, but showed resistance 3.6 Ohm. Mapping in DB is updated accordingly 2 June 2008, around 14:00
O/15/32..O/15/57 Reconnected from 4/6 to the spare 8/7 During the check of the fuses on the box #4 showed resistance 3.6 Ohm. Mapping in DB is updated accordingly 2 June 2008, around 14:00
O/14/32..O/14/57 Box 4 / connector 5 - to be watched During the check of the fuses on the box #4 showed resistance 3.2 Ohm
ECAL A-side 02.06.08 ~10:00 Multiple short circuits in LV +6V Certainly provoked by somebody's activity, since OV protection relay states had been changed also
 
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
Line: 14 to 18
 
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...O/43/57 Short circuit in power line 25/4 (+6V LV chains)
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26.05.08 Power Cut
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26.05.08 Power Cut. Agilent's stayed ON while MARATONS were OFF (~1hour)
 
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

Revision 102008-06-02 - unknown

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META TOPICPARENT name="LHCbCalo"

Problematic channels / actions log

Section/X/Y Time Description Comment
Line: 7 to 7
 
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)
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I/45/14...I/45/49 26.05.08 ?:?? - 28.05.08 ??:?? Short circuit in power line 21/0 (+6V LV chains)
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I/45/14...I/45/49 26.05.08 ?:?? - 27.05.08 ??:?? 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)
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O/43/06...M/43/57 Short circuit in power line 25/4 (+6V LV chains)
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O/43/06...O/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

Revision 92008-06-02 - unknown

Line: 1 to 1
 
META TOPICPARENT name="LHCbCalo"

Problematic channels / actions log

Section/X/Y Time Description Comment
Line: 19 to 19
 
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
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16.05.08, afternoon Local Power Cut, A-side
09.05.08 Power Cut (?rumors)
 
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
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30.04.08 ~11:20 Power Cut
 
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)
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17.04.08, morining Power Cut (short)
 
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)

Revision 82008-06-01 - unknown

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META TOPICPARENT name="LHCbCalo"
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Problematic channel's / actions log

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Problematic channels / actions log

 
Section/X/Y Time Description Comment
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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
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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
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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)
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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)
 

Cells with (presumably) damaged optical fibers of LED Monitoring system

In these cells week or absent LED signal is observed.

Line: 108 to 127
 
28 28 18
20(EHV3) 29 29 10
30 31 41
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31 32 46
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>
31 32 43
 
32 01 38

-- IrinaMachikhiliyan - 25 Apr 2008

Revision 72008-05-23 - unknown

Line: 1 to 1
 
META TOPICPARENT name="LHCbCalo"

Problematic channel's / actions log

Section/X/Y Time Description Comment
Added:
>
>
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
 
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)

Revision 62008-05-12 - unknown

Line: 1 to 1
 
META TOPICPARENT name="LHCbCalo"

Problematic channel's / actions log

Section/X/Y Time Description Comment
Line: 69 to 69
 
  • Medium voltages (AGILENT) for phototubes

Side Supply channel Voltage Current, no MV Current, Nominal MV, PM HV=0 Current, Nominal MV, Nominal PM HV
Changed:
<
<
C 3 80V 0.2A 0.48A 1.39A
A 1 80V 0.2A 0.49A 1.39A
>
>
C 3 80V 0.2A 0.48A 1.45A
A 1 80V 0.2A 0.51A 1.45A
 

Voltage distribution / control boxes

Revision 52008-05-08 - unknown

Line: 1 to 1
 
META TOPICPARENT name="LHCbCalo"
Changed:
<
<

Problematic channel's log

Section/X/Y Time period of malfunction Problem description Comment
>
>

Problematic channel's / actions log

Section/X/Y Time Description Comment
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)

Cells with (presumably) damaged optical fibers of LED Monitoring system

Revision 42008-05-05 - unknown

Line: 1 to 1
 
META TOPICPARENT name="LHCbCalo"

Problematic channel's log

Changed:
<
<
Section/X/Y Time period of malfunction Problem description
O/60/32...O/60/57 29.04.08 8:50 - ??? Short circuit in power line 32/6 (+6V LV chains)
>
>
Section/X/Y Time period of malfunction Problem description Comment
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)
 

Cells with (presumably) damaged optical fibers of LED Monitoring system

Revision 32008-04-29 - unknown

Line: 1 to 1
 
META TOPICPARENT name="LHCbCalo"
Added:
>
>

Problematic channel's log

Section/X/Y Time period of malfunction Problem description
O/60/32...O/60/57 29.04.08 8:50 - ??? Short circuit in power line 32/6 (+6V LV chains)
 

Cells with (presumably) damaged optical fibers of LED Monitoring system

In these cells week or absent LED signal is observed.

Line: 19 to 23
 
I/50/38 15/14/02  
O/37/21 19/03/29  
I/53/32...I 55/34 15/12/(21..23;29..31 and 15/13/(5..7) LED A3.11.4...entire bundle is damaged
Deleted:
<
<
presumably fixed during dosimeters installation, to be checked
 
I/53/38...55/40 15/14/(5..7;13..15;21..23) LED A3.08.4, entire bundle is damaged
Deleted:
<
<
presumably fixed during dosimeters installation, to be checked
 
O/36/54...39/57 19/14/(4..7; 12..15; 20..23; 28..31) LED A1.05.1...entire bundle is damaged

Power supplies

Line: 69 to 71
 
C 3 80V 0.2A 0.48A 1.39A
A 1 80V 0.2A 0.49A 1.39A
Added:
>
>

Voltage distribution / control boxes

Side, PC SPECS master address Control box # SPECS slave address Serial number
C, ECHVC01W 18 (EHV5) 01 01 08
02 02 44
03 03 40
04 04 03
17(EHV4) 05 05 16
06 06 45
07 07 33
08 08 25
19(EHV6) 09 09 34
10 10 09
11 11 31
12 12 26
20(EHV7) 13 13 30
14 14 19
15 15 21
16 16 17
A, ECHVA01W 19(EHV2) 17 17 34
18 18 20
19 19 28
20 20 06
18(EHV1) 21 21 27
22 22 36
23 23 35
24 24 11
17(EHV0) 25 25 23
26 26 29
27 27 13
28 28 18
20(EHV3) 29 29 10
30 31 41
31 32 46
32 01 38
  -- IrinaMachikhiliyan - 25 Apr 2008

Revision 22008-04-28 - unknown

Line: 1 to 1
 
META TOPICPARENT name="LHCbCalo"
Added:
>
>

Cells with (presumably) damaged optical fibers of LED Monitoring system

In these cells week or absent LED signal is observed.

Side Section/X/Y R/O Crate/Slot/Channel Comment
C O/17/16 10/02/17  
O/18/17 10/02/26  
O/01/56 08/18/17  
O/31/57 10/20/31  
O/08/55 09/18/08  
A I/55/44 15/17/23  
I/32/14 15/02/00  
I/33/14 15/02/01  
I/32/16 15/02/16  
I/55/35 15/13/15  
I/55/36 15/13/23  
I/50/38 15/14/02  
O/37/21 19/03/29  
I/53/32...I 55/34 15/12/(21..23;29..31 and 15/13/(5..7) LED A3.11.4...entire bundle is damaged
presumably fixed during dosimeters installation, to be checked
I/53/38...55/40 15/14/(5..7;13..15;21..23) LED A3.08.4, entire bundle is damaged
presumably fixed during dosimeters installation, to be checked
O/36/54...39/57 19/14/(4..7; 12..15; 20..23; 28..31) LED A1.05.1...entire bundle is damaged
 

Power supplies

ECAL exploits two types of power supplies:

Revision 12008-04-25 - unknown

Line: 1 to 1
Added:
>
>
META TOPICPARENT name="LHCbCalo"

Power supplies

ECAL exploits two types of power supplies:

  • low voltages (LV) are provided by MARATON power supplies located in the racks L3B01 (C-side) and L3B11 (A-side) on the platform on top of the detector;
  • medium voltages (MV) are provided by AGILENT power supply located in the barrack;

Operating rules:

  • Avoid unnecessary switching-on/switching-off of power supplies, especially - the MARATON ones;
  • After power cut: do not turn on low voltages immediately, but wait about 30 minutes - one hour;
  • In case of emergency shut-down: MV (AGILENT) should be turned off first. After that LV (MARATON) can be turned off, but not contra vise;
  • Each switching-on / switching-off of LV (MARATON) should be mentioned in CALO logbook together with the status of AGILENT power supply;

  • Correct procedure for complete shut down of the ECAL:
  1. Set zero high voltage (HV) codes on ECAL photomultipliers. Wait for confirmation from ECS software;
  2. Set zero LED intensity codes. Wait for confirmation from ECS software;
  3. Set zero medium voltages on Agilent power supply. Wait for confirmation from ECS software;
  4. Switch off low voltages. All four dedicated channels of MARATON power supply must be turned off at once;

  • Correct procedure to turn on the ECAL:

  1. Switch on low voltages. All four dedicated channels of MARATON power supply must be turned on at once.
    DO NOT TURN ON single channel, it can cause MARATON supply failure. In case of alarms / warnings, indicating 'short-circuits' in LV lines (a) make notice in CALO logbook and (b) contact experts;
  2. Enable high voltage on ECAL photomultipliers. By default it is disabled by overcurrent protection circuits. Protection can be removed by means of ECS software;
  3. Turn on medium voltages on Agilent power supply. Wait for confirmation from ECS software;
  4. Configure high voltages on ECAL photomultipliers. Do not exceed marginal gain value 3x10^5 . Configuration can take several minutes. When it is finished, check the status of overcurrent protection circuits. In case of alarms / warnings (a) make notice in CALO logbook and (b) contact experts;
  5. Configure intensities of ECAL LEDs;

Nominal settings and typical values for current consumption:

  • Low voltages (MARATON)
Side Rack Supply channel Voltage Current, no MV Current, Nominal MV Comment
C L3B01 1 +6.95V 10.0A 9.8A  
2 +6.98V 13.4A 12.9A  
3 -6.8V 16A 16A  
4 14.9V 5A 5A Shared with PS, consumption may vary
A L3B11 1 +7.0V 12.0A 11.6A  
2 +7.0V 11.9A 11.5A  
3 -6.88V 16A 16A  
4 15.0V 7A 7A Shared with PS, consumption may vary

  • Medium voltages (AGILENT) for phototubes

Side Supply channel Voltage Current, no MV Current, Nominal MV, PM HV=0 Current, Nominal MV, Nominal PM HV
C 3 80V 0.2A 0.48A 1.39A
A 1 80V 0.2A 0.49A 1.39A

-- IrinaMachikhiliyan - 25 Apr 2008

 
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