Calorimeter Electronics Status
Below are compiled useful information addressing the current status of the calorimeter Electronics during the installation and the commissioning phase toward the final setup. The expected final readout setup is described
here 
and is summarized in the dedicated
LHCbCaloReadout wiki page.
ECAL/HCAL
|
|
| Crate |
Slot/Feb |
Channel Input |
Observation |
Mask date |
Unmask date |
| 22 (HCAL) |
3/3 |
31 |
Noisy channel with sometimes high signals |
March 17th, 2010 |
April 8th, 2010 |
| 11 (ECAL) |
8/6 |
5 |
Noisy channel |
April 8th, 2010 |
May 20th, 2010 |
| 24 (HCAL) |
11/8 |
7 |
Noisy channel |
July 24th, 2010 |
January 19th, 2011 |
| 22 (HCAL) |
8/6 |
11 |
Noisy channel |
July 24th, 2010 |
January 19th, 2011 |
|
|
|
Spares status
|
|
| FEB |
Status |
Poignées |
Observations |
| 006 |
Good |
Noires |
Spare |
| 007 |
Good |
Noires |
Spare |
| 018 |
Good |
|
Spare - TVB specific |
| 049 |
Good |
|
Spare |
| 062 |
Good |
|
Spare |
| 110 |
Good |
|
Spare - Screew broken in front panel connector - Used for crate clock phase monitoring |
| 139 |
Good |
|
Spare |
| 158 |
Good |
|
Spare - TVB specific |
| 173 |
Good |
|
Missing bit -> BGA replacement. Afterwards, ECS problems appeared (March 29th, 2010) BGA has to be replaced again (could not read the checksum with the Silicon explorer). During the operation some contacts have been pulled out and the board had to be fixed before a new fpga could be soldered. Finally the board was repaired and works. |
| 191 |
Good |
|
Spare |
| 216 |
Faulty |
|
Seq PGA problem - BGA warms up - jtag scan chain failure - BGA replacement Seq PGA replaced on January 19, 2011. Problem remains. |
| 223 |
Good |
|
Spare |
| 236 |
Faulty |
|
Trigger PGA problem -> BGA to replace ? can be used as a pin-diode - Sent to LAL from crate timing studies. |
| 253 |
Faulty |
|
A channel is noisy. Board removed from the calorimeter. |
|
|
|
Spare installed back on the detector
|
|
| FEB |
Status |
Date |
Observations |
| 060 |
Good |
|
|
| 253 |
Good |
January 18th, 2011 |
A channel was noisy at the pit -> Could not observe it in test bench |
| 191 |
Good |
February 3rd, 2011 |
|
|
|
|
"Burnt" FEB
Doubtful connections
bad_connections080410.xls
Specific FEB
FEB with fugitive problem
|
|
| FEB |
Status |
Observation |
| 006 |
Spare |
Channel input 13 does not work properly - Remove from the calorimeter on March 15th, 2010 -> Could not observe it in test bench |
| 007 |
Spare |
SPECS problem have been observed at the pit and in test area. But problem diasappeared during the latest debugging (March 09, 2010). |
| 139 |
Spare |
A channel was noisy at the pit (channel 31) -> Could not observe it in test bench |
|
|
|
Weak FEB HCAL ->TVB trigger signal
ECAL only
|
|
| FEB |
Status |
Observation |
| 272 |
Installed in ECAL |
Problem with a trigger (HCAL connection) serialiser |
|
|
|
Not functional FEBs
|
|
| FEB |
Observation |
| 035 |
"Burnt" board used to define temperature profil for BGA replacement -> destroyed |
|
|
|
History of debugging/reparations
|
|
| FEB |
Pending Issue |
Fixed on |
Intervention |
| 060 |
|
March 23rd, 2010 |
Missing bit (value 8) on third channel BGA 2 - BGA replaced |
| 062 |
|
March 29th, 2010 |
Missing bit on pga 3/adc 0. BGA replaced. No improvement. Board to be debugged again. |
| |
|
January 19th, 2011 |
Missing bit -> BGA FE3 replacement after soldering a wire through the PCB. Problem solved. |
| 110 |
|
January 19th, 2011 |
|
| 140 |
|
March 23rd, 2010 |
Delay Chip replacement |
| 173 |
x |
March 29th, 2010 |
Missing bit on pga 1. NGA replaced. PGA no functional anymore (no ECS). |
| |
|
January 19th, 2011 |
BGA has been removed but is still at the electronics service. |
| 191 |
|
January 19th, 2011 |
Delay chip seqtrig was dead. Replaced. |
| 216 |
x |
January 19th, 2011 |
Seq was changed (not functioning and very hot). After replacement, problem remains. |
| 223 |
|
March 23rd, 2010 |
ECS problem on FEPGA 6 - BGA replaced |
|
|
|
Spares
|
|
| CROC |
Status |
Observation |
| |
Good |
Spare but located at LAL - No shielding (removed for activation studies) |
| |
Good |
Spare |
| |
Good |
Spare |
| |
Good |
Spare |
| |
Good |
Spare |
| |
Good |
Spare |
|
|
|
Due to backplane problem the following FEB are currently moved with respect to their expected location.
Ecal crate #16 : FEB#12 and FEB#13 moved FROM slot 17 and 18 TO slot 18 and 19
Ecal crate #15 : FEB#13 moved FROM slot 18 TO slot 19
WARNING this slot is to be used by one LEDTSB Hcal crate #22 : FEB#14 moved FROM slot 19 TO slot 20
NO problem as it's a PIN readout FEB Comment : backplane from Ecal crate#15 and #16 need to be repared. Moving FEB affects
L0Calo.
PRS/SPD
TELL1
Trigger
* Scan of TVB inputs:
|
|
| Board |
Scan of HCAL Inputs |
Scan of ECAL Inputs |
| 0 |
HCAL0 PatternA, HCAL0 PatternB |
Crate 8 slot 0-7 |
| HCAL1 PatternA, HCAL1 PatternB |
| HCAL2 PatternA, HCAL2 PatternB |
| HCAL3 PatternA, HCAL3 PatternB |
| 1 |
HCAL0 PatternA, HCAL0 PatternB |
Crate 8 slot 11-18 |
| HCAL1 PatternA, HCAL1 PatternB |
| HCAL2 PatternA, HCAL2 PatternB |
| 2 |
HCAL0 PatternA, HCAL0 PatternB |
Crate 9 slot 0-7 |
| HCAL1 PatternA, HCAL1 PatternB |
| HCAL2 PatternA, HCAL2 PatternB |
| HCAL3 PatternA, HCAL3 PatternB |
| 3 |
HCAL0 PatternA, HCAL0 PatternB |
Crate 9 slot 11-18 |
| HCAL1 PatternA, HCAL1 PatternB |
| HCAL2 PatternA, HCAL2 PatternB |
| 4 |
HCAL0 PatternA, HCAL0 PatternB |
Crate 10 slot 0-7 |
| HCAL1 PatternA, HCAL1 PatternB |
| HCAL2 PatternA, HCAL2 PatternB |
| HCAL3 PatternA, HCAL3 PatternB |
| 5 |
HCAL0 PatternA, HCAL0 PatternB |
Crate 10 slot 11-18 |
| HCAL1 PatternA, HCAL1 PatternB |
| HCAL2 PatternA, HCAL2 PatternB |
| HCAL3 PatternA, HCAL3 PatternB |
| 6 |
HCAL0 PatternA, HCAL0 PatternB |
Crate 11 slot 0-7 |
| HCAL1 PatternA, HCAL1 PatternB |
| HCAL2 PatternA, HCAL2 PatternB |
| 7 |
HCAL0 PatternA, HCAL0 PatternB |
Crate 11 slot 11-18 |
| HCAL1 PatternA, HCAL1 PatternB |
| HCAL2 PatternA, HCAL2 PatternB |
| 8 |
HCAL0 PatternA, HCAL0 PatternB |
Crate 12 slot 0-7 |
| HCAL1 PatternA, HCAL1 PatternB |
| HCAL2 PatternA, HCAL2 PatternB |
| 9 |
HCAL0 PatternA, HCAL0 PatternB |
Crate 12 slot 11-18 |
| HCAL1 PatternA, HCAL1 PatternB |
| HCAL3 PatternA, HCAL3 PatternB |
| 10 |
HCAL0 PatternA, HCAL0 PatternB |
Crate 13 slot 0-7 |
| 11 |
HCAL0 PatternA, HCAL0 PatternB |
Crate 13 slot 11-18 |
| HCAL1 PatternA, HCAL1 PatternB |
| 12 |
HCAL0 PatternA, HCAL0 PatternB |
Crate 14 slot 0-7 |
| HCAL1 PatternA, HCAL1 PatternB |
| 13 |
HCAL0 PatternA, HCAL0 PatternB |
Crate 14 slot 11-18 |
|
|
|
-- FredericMachefert - 15 March 2010
CALO Web>LHCbCalo>LHCbElectronicsStatus (2011-09-02, FredericMachefert)
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