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South HV
6
Been bad from the past. Attempted to fix during Run12 shutdown. But couldn’t fix. Cause may be inside.
MuTr HV Trip History Run13
North
South
* HV trip due to communication failure are excluded
Lost HV module
90days
N311N331N351
North Arm
West East
Station-1
Noisy ADTXCheck grounding& trippy HV
Station-2,3
8
Need to change FEE boards
11300S3 O2 C6
11343S3 O7 C1
11195S1 Q3 C3
HV St-3 Oct4N341-0
Oct-3 Anode Trippy HV
Oct-5 Anode Trippy HV
South Arm
WestEast
Noisy ADTX Check Grounding
Station-2,3
9
11137,11138S3 O5 C2
11064S2 O3 C411134
S3 O4 C5
HV St3, Oct1S311-0(couldn’t fix)
HV St3, Oct7S371-6(couldn’t fix)
MuTr RX Card Debugging (1)• RX card transmits electrical signal to optical.• We have only 3 spare good boards and 7 spare
boards to be debugged.• To be tested at John Haggerty’s test bench.
10
MUTR
FEE RX card DCMopticalelectrical
MuTr fiber labeling
• Redo MuTr fiber labeling at DCM. • The new label suppose to have Module# and
dsp# as well.
12
Debugging MRG FPGA Symptom
South Octant-1 Constant Rates (Threshold dependent)
South Octant-3 Excursion w/ time constant of ~20minutes
North
South
Run12 Octant-1 Cosmic SG1~50kHz
Run12 Octant-1 Physcs SG1~1kHz
Plot by Dahee (Ewha University)
South Octant-3
Above two octants are running with olderversion of MRG FPGA in Run13. Both are observable with cosmic circumstances
FPGA: verilog HDL
13
Summary
• So far high rates in both Oct-1 and Oct-3 are both disappears with down graded MRG FPGA code.
• Whether we run with mixed two FPGA code?• Down grade all octants?• Confirm stability using cosmic as long as
possible.
16
When did this started?
17
FPGA Upgrade(Mar. 28, 2012)
FPGA Upgrade(Mar. 28, 2012)
- runtype: CALIBRATION data- triggerconfig: PP510Run12_Cosmic- run time > 10 min- MUIDLL1_N1D||S_1D trigger enabled.
40kHz
S_SG
1 ra
te
Octant-3 Threshold=20mV for Cosmic Runs.
Run Rate[kHz]
Run13 Threshold Response of Octant-1
North
South
Run12 Octant-1 Cosmic SG1~50kHz
Run12 Octant-1 Physcs SG1~1kHz
Plot by Dahee (Ewha University)
18Run12 Cosmic Rate ~40kHz is consistent with present measurement.Physics run was operated at 30mV and likely to be operated around 1kHz.
Time dependent rate in Run12 Cosmic
19
mrg_prom021
mrg_prom036
mrg_prom036
mrg_prom036
S_SG
1 Ra
te
No indication of Oct-3 High rate excursion. Hidden under Oct-1 40kHz?Need Time dependent LL1SG1 rate Oct-by-Oct -> Josh developed in the past?
Octant-1 Diagnosis
• Station-1, Station-2 Mask Station-3b (done)• Chip scope measurement using LL1 fire as trigger of chip
scope• Check the communication between MRG and LL1. How we
know the communication error?• Check the timing alignment error.• Play with delay scan level-1 internal clock.(require LL1
FPGA modification) • Perform MRG (process) delay scan (all stations at once)
more precisely (to find the timing when LL1 started to fail align),
21
North Arm
West East
Station-1
Noisy ADTXCheck grounding
Station-2,3
22
Need to change FEE boards
11300S3 O2 C6