Post Run13 MuTR/MuTrig Maintenance

1

Cathode Cable in mis-contact :South Station-1 Oct-5, Gap-2

2

High Noise Rate in South St-1 Oct-3 Gap-2

3

North Station-3 Octant-1

North Station-3 Octant-1 stands outSee next page for gap decomposition 4

North Station-3 Octant-1 Gap-2

<-Gap-1 is OK5

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 RX Card Debugging (2)

11

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

BACKUPS

14

Numbering Skeme

15

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?

Long Time Monitoring Excursion

20

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

South Arm

WestEast

Noisy ADTX Check Grounding

Station-2,3

23