1. CSC Status Report Status reports;
19-April-05
CSC Status Report
Status reports;
Issues with System reliability and Maintainability (LV, HV, Electronics modules and crates, internal interfaces)
External Interface reliability (Cooling, Power, TTC, DAQ)
Prepared for CSC by
Fred Borcherding FNAL
6-Nov-08
ESSC Nov 2008 > CSC Status Report by Fred B.

2. ESSC Nov 2008 > CSC Status Report by Fred B.
19-April-05
Overview
Status of Electronics > Installed / Total at CERN / Good Spares
Status of Crates and boards, how many are needed, how many are at CERN and how many are good spares
Issues with System reliability and Maintainability
LV > Wiener Maraton system (air cooled)
Problems with OPFC modules
CANBus communication problems with Maraton units
HV > Resistors
Electronics modules and crates
On-chamber Electronics
Other Electronics
internal interfaces
External Interface reliability
Cooling
Power
TTC
DAQ
6-Nov-08
ESSC Nov 2008 > CSC Status Report by Fred B.

3. Status of Electronics > Installed
19-April-05
Status of Electronics > Installed
Status of Electronics > Installed / Total at CERN / Good Spares
Status of Crates and boards, how many are needed, how many are at CERN and how many are good spares
The following few slides are included for completeness
6-Nov-08
ESSC Nov 2008 > CSC Status Report by Fred B.

4. ESSC Nov 2008 > CSC Status Report by Fred B.
19-April-05
On-Chamber Boards
CSC On-chamber Electronics Boards installed /total /spares
CFE xxxxx CFEB one type, 5(4) per chamber /?? /19
ALC xxxxx ALCT ME1_1 72 /?? / ??
ALC xxxxx ALCT288 ME1_3 72 /?? /10
ALC xxxxx ALCT384 ME1_2, ME234_2 214/?? /11
ALC xxxxx ALCT672 ME2_1, ME3_1, ME4_1 108 /?? /4
ALM xxxxx ALCT_MEZ one type, 1 per chamber 468 /?? /??
LVD xxxxx LVDB one type, 1 per chamber 468 /?? /??
LVM xxxxx LVMB one type, 1 per chamber 468 /?? /??
AFE xxxxx AFEB one type, many per chamber ?? /?? /??
NOTE: Have ~18 spare chambers, each with full complement of on-chamber boards – these are not in the sums above
6-Nov-08
ESSC Nov 2008 > CSC Status Report by Fred B.

5. ESSC Nov 2008 > CSC Status Report by Fred B.
19-April-05
LV & PCRATE
CSC LV Power Supplies > Wiener Maraton System, Air Cooled installed /total /spares
PFCB LVPS xxxx OPFC Bin (Crate) 6 /8 /2
PFCM LVPS xxxx OPFC Module 36 /40 /4
MARS LVPS xxxx Maraton Supply 36 /40 /4
MARC LVPS xxxx Maraton Crate 36 /38 /2
Peripheral Crate, pcrate, Components installed /total /spares
EMUPC PC xxxx pcrate crate 75 /60 /15
CBP PC xxxx pcrate back plane 70 /60 /10
CRB PC xxxx pcrate regulator brd 88 /60 /28
PCM PC xxxx PCMB /60 /19
ELM PC xxxx ELMB on PCMB 79 /60 /19
Pcrate boards installed /total /spares
VCC PC xxxx Crate Controller 73 /60 /15
CCB PC xxxx Clock and Control 84 /60 /24
DMB PC xxxx DAQ Mother Brd /468 /82
MPC Trigger PC xxxx Muon Port Card 70 /60 /10
TMB Trigger PC xxxx Trig Mother Brd /468 /102
RAT Trigger PC xxxx RPC ALCT Trns /468 /222
6-Nov-08
ESSC Nov 2008 > CSC Status Report by Fred B.

6. ESSC Nov 2008 > CSC Status Report by Fred B.
19-April-05
CSC HV
HV ME1/1 > CAEN System installed /total /spares
Cc HV1 3052## Crate 2 /2 /0
Cc HV1 3052## Board 16 /18 /2
HV > UF Custom System installed /total /spares
HV UF Custom System installed /total /spares
HDS xxxxx Distribution /159 /33
HDL xxxxx Distribution /173 /29
HDC xxxxx Distrib Crate 30 /34 /4
HDP xxxxx Distrib Patch 8 /9 /1
HMB xxxxx Master board 40 /48 /8
HMC xxxxx Master Crate 8 /10 /2
HPS xxxxx Primary HV src 8 /10 /2
HCC xxxxx Control comp 2 /3 /1
HLV xxxxx LV power supply 2 /3 /1
HMP xxxxx Master Patch 2 /1 /3
HLP xxxxx LV patch panel 2 /4 /2
HCP xxxxx Control patch 2 /4 /2
HPC xxxxx Primary HVPS ctr 2 /3 /1 (spare parts)
6-Nov-08
ESSC Nov 2008 > CSC Status Report by Fred B.

7. ESSC Nov 2008 > CSC Status Report by Fred B.
19-April-05
CSC Track Finder
CSC TF installed /total /spares
CCC Trigger TF U CAEN VME 1 /3 /1
0 Trigger TF wiener crate ( trigger) 1 /2 /1
0 Trigger TF TF backplane 1 /3 /2
DDU Trigger TF DDU /2 /1
DDE Trigger TF DDU extender 1 /3 /1
TSP Trigger TF SP /17 /2
CCB Trigger TF CCB /3 /1
0 Trigger TF muon sorter /5 /3
6-Nov-08
ESSC Nov 2008 > CSC Status Report by Fred B.

8. ESSC Nov 2008 > CSC Status Report by Fred B.
19-April-05
CSC FED
FED Crates > Wiener 9U VME installed /total /spares
FED FED FED Crate 4 /4 /0 (1 sp PS)
FED Boards > OSU Custom Brds installed /total /spares
CVC FED CAEN 6U CC 4 /5 /1
One sent to CAEN for repair, good spare is loan from pool
DCC FED Clock and Control 4 /6 /2
2 more to be shipped to CERN
DDU FED Data Board /?? /??
Pcrate Network > GBit installed /total /spares
GNS GIG GBit Ethernet switch 8 /10 /2 (1 sp installed)
6-Nov-08
ESSC Nov 2008 > CSC Status Report by Fred B.

9. Issues with System Reliability and Maintainability
19-April-05
Issues with System Reliability and Maintainability
LV > Wiener Maraton system (air cooled)
Problems with OPFC modules
The front panel switch has been a problem – the quick connect to the switch becomes unreliable
Plan is to have the connection soldered after agreement with Wiener
The Soft Start can fail and damage module
Turning the power OFF and then back ON too quickly can cause the failure
This is a feature of the slow ramp-down inside the module
For now the fix is administrative
Only experts cycle switches > with proper time interval observed
Shifters instructed (& procedures) to switch ON only if they are found OFF > never cycle
CANBus communication problems with Maraton units
Recently observed > not yet diagnosed
CANBus PC crashes – could be symptom or cause
Note LV stays ON and hardware protections stay in place
But DCS monitoring and software protections are lost
Reboot computer
Cannot communicate with Maratons
Cycle power to Maraton(s) – see problem above
Then communication can be restored
Works BUT have to restart and reinitialize electronics for multiple crates plus 9 chamber per crate. Also cannot be done on the fly but requires time between runs.
6-Nov-08
ESSC Nov 2008 > CSC Status Report by Fred B.

10. Issues with System Reliability and Maintainability
19-April-05
Issues with System Reliability and Maintainability
HV > problems with resistors in UF custom system
A resistor is used for each channel to measure the exact voltage applied to that channel >> over 10,000 channels
The resistor used has failed to retain its factory specifications
The resistance moves up or down significantly over relatively short time periods
This change can be calibrated out but would require re-calibration before each run
We will replace these resistors during the coming shutdown
Modules will be removed from tower racks in cavern
Resistors will be swapped in the ISR clean room area
QA, tests and calibrations will be carried out at ISR
Modules will be re-installed
The process will be carried out sequentially so that most of the HV for CSC is operational at all times.
Electronics modules and crates
On-chamber Electronics
Old problem with fuses on ALCT boards is corrected
Very limited access makes repair of ‘normal’ failures very difficult > thus we have an inventory of deferred interventions
Other Electronics
PROM issues for pcrate boards
Program for onboard FPGA’s is stored in local PROM and reloaded at each hard reset
These PROM’s loose their program with the result that the connected chamber is lost to the readout
A reprogram of the PROM brings it back without problem
But need to find a solution > being worked on
internal interfaces > no issues
6-Nov-08
ESSC Nov 2008 > CSC Status Report by Fred B.

11. External Interface reliability
19-April-05
External Interface reliability
Cooling
During CRAFT running the cooling on detector and in counting rooms has been reliable
We are working to add additional DCS linked temperature sensors in CSC cavern racks to detect problems in a finer grained way and to monitor trends
Power
Power upstream of our LVPS has been reliable.
TTC > no particular problems
DAQ
Occasionally the CSC FEDS have sent FMM warnings and errors generated by problem front-end boards
Since the Central Trigger stops a run on an FMM warning or error we have disabled FMM reporting by our front-end boards
This will result in a negligible loss of data
We will review this decision when we are allowed access to fix the small number of boards
CSC along with other systems have problems associated with start of run
the source has been identified in the software and fixes will be implemented
6-Nov-08
ESSC Nov 2008 > CSC Status Report by Fred B.