qc7 report - indico

June 12th 2020, CERN 1/14

QC7 REPORT:

GE-1/1 WORKSHOP

Johny Jaramillo1, Milena Dyulendarova2, Brendan Regnery3

(1 Universidad de Antioquia, 2 Bulgarian Academy of Sciences, 3 University of California, Davis)

June 12th 2020, CERN 2/14Johny Jaramillo - QC7 report

Outline

➢ QC7 - Electronic test description➢ QC7 current setup and times➢ Typical issues and solutions➢ QC7 status


What is QC7?

Chamber with electronics recently installed

QC7 testwithoutcooling plate

QC7 testwithcooling plate & chimney

SC - assembly Cosmic stand (QC8)

Fix & Retest Fix & Retest


QC7 test flow

Testconnectivity

Con

fCha

mbe

r.py

100

Hz

Scurve 1 (100 ARM_DAC)

runScans.py Scurve

analUltraScan.py Scurve

Scurve 2 (100 Hz)

runScans.py Scurve

analUltraScan.py Scurve

Sbit rate

runScans.py Sbit thres

anaScan.py Sbit thres

Scurve 2 (100 Hz)

runScans.py Scurve

analUltraScan.py ScurveC

onfC

ham

ber.p

y-1

00 A

RM

_DA

C

CheckTriggerLinks

GBT & SCA communication

DacScan Analysis

DacScan

GetCalInfoFromDB

VFAT comm & sync

PROGRAM FPGA

GBT phaseScan

100 Hz THR


QC7 approved

Normally,the bulk of channels (yellow boxes) should have ENC below this line

Low Noise

Good sbit


Current QC7 setup

Stand 1 (Brendan) Stand 2 (Johny)

- External power supply (8 V @ 6 A)- Cooling line & external Fan- Access to QC7 machine- backend : GLIB- Full QC7 with GLIB : ~ 2,5 - 3 hours

In a typical test, QC7 is performed ~ 2 - 4 times = 5 - 12 hours

- External power supply (8 V @ 6 A)- Cooling line & external Fan- Access to QC7 machine- backend : CTP7- Full QC7 with CTP7 : ~ 1 - 1,5 hours

In a typical test, QC7 is performed ~ 2 - 4 times = 2 - 6 hours


Typical issues : GBT phase scan

Phase 4 will be used for (OH0,VFAT0)Phase 8 will be used for (OH0,VFAT1)Phase 4 will be used for (OH0,VFAT2)Phase 4 will be used for (OH0,VFAT3)Phase 4 will be used for (OH0,VFAT4)Phase 6 will be used for (OH0,VFAT5)Phase 4 will be used for (OH0,VFAT6)Phase 4 will be used for (OH0,VFAT7)Phase 4 will be used for (OH0,VFAT8)There were more than 5 bad phases for (OH0,VFAT9)I did not find a good phase for (OH0,VFAT9)Phase 10 will be used for (OH0,VFAT10)Phase 5 will be used for (OH0,VFAT11)Phase 6 will be used for (OH0,VFAT12)Phase 6 will be used for (OH0,VFAT13)Phase 7 will be used for (OH0,VFAT14)Phase 4 will be used for (OH0,VFAT15)Phase 11 will be used for (OH0,VFAT16)Phase 8 will be used for (OH0,VFAT17)Phase 4 will be used for (OH0,VFAT18)Phase 12 will be used for (OH0,VFAT19)Phase 13 will be used for (OH0,VFAT20)Phase 4 will be used for (OH0,VFAT21)Phase 6 will be used for (OH0,VFAT22)Phase 13 will be used for (OH0,VFAT23)Writing Found Phases to frontendGBT Phase Scans Failed to Find Proper Phases

GBT phase scans fails for one or more VFATs

Most of the times this issue is solved unplugging and replugging very carefully the OH in the samtec connectors


Typical issues : Connectors

Bad SAMTEC connector

Solution : Replace the GEB

Bad connection VFAT - readout board

Causes : ● Mechanical stress by cooling plate● Dirty 130 pin connector

Solution: Dismount cooling carefully and replugging the VFAT


Typical issues : Broken sbits

OH SAMTEC GEB routing

100 pin Panasonic

VFATSbit lines

Typically here


Typical issues : High noise

FEAST FQA & FQB REPLACED

ELOG: http://cmsonline.cern.ch/cms-elog/1104336

http://cmsonline.cern.ch/cms-elog/1104336


Typical issues : High current consumption

Current consumption QC7 monitoring system

This app was developed to detect (with good temporal resolution ~ 100 mS) how some QC7 issues are related wit power consumption


Typical issues : High current

THRESHOLDSCANScurve 2

100 Hz

SBITSCANDAC_SCAN

Scurve 1100 ARM_DACSTANDBY

RUN mode

GBT PHASE SCAN


QC7 Status

Negative end-cap:

➢ all chambers have been tested and installed in the CMS (72/72 # chambers)

Positive end-cap:

➢ All short chambers (36/36) were validated in QC7○ Including one problematic SC pending since March○ One high current consumption chamber returning from QC8

➢ After Lab activities were restarted○ 4 short chambers were tested and validated in QC7○ 10 long chambers were tested and validated in QC7○ 2 long chambers are under test now

➢ In total 81% ( 58/72) of the GE1/1 chambers passed successfully QC7


Thanks

QC7 team Brian, Christos, Nimantha, Ram, Balashangar, Marek,

Kalpanie, Baktash, Simone, Prashant, Mohit, Meena,

Biagio, Asar, Johny, Brendan, Milena

QC8 team Giovanni, Federica

DAQ team Laurent, Camilla, Jared, Misha

LAB team Michele B., Mohsin A., Jeremie M., Francesco F., Felipe

qc7 report - indico

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