TGC-electronics commissioning before beam collision

Y. Sugaya Osaka-U

アトラス総会２００４　 12/23河口湖

2004/12/23 2004アトラス総会 2

Electronics commissioning concept►TOF has been calculated, cable delay has been measured.

● Fine variable delay tuning (sub-nano step). ►Synchronization at early stage

● Easier tuning and reliable operation● Coarse variable delay tuning (12.5 nsec step)● Checking on test bench is effective

►One or a few parameters for Level 1 buffer depth and Beam crossing clock phase turning

L1B

BC clockBC clock

High-ptboard

Sector Logic

Star switch

Slave board

Patch panel

ASD

MuCTPI

Synchronous40 MHz beam crossing clockL1BL1B

2004/12/23 2004アトラス総会 3

SchedulePeriod progra

mitems

during 2005Mass production of electronics

Bench test Crucial check of circuit performance

From Feb. 2005commissioning of a 1/12 slice

test pulse and cosmic-ray

Fine delay including chamber response

After installation, Nov. 2005: M12006: M2, M3

test pulse Coarse delay for synchronous circuits.Level 1 buffer depth

Chambers are ready Cosmic ray Overall check of up to nowTrigger for other detector

2007Single beam operation

beam halobeam gas

Overall check of up to now Bunch crossing clock phaseTrigger for other detector

2004/12/23 2004アトラス総会 4

Inspection of circuits using test bench

►Slice test using completed circuit (at KEK?)

►Validation of trigger performance►Hardware simulation software is ready

● hit pattern <-> trigger signalHigh-ptboard

Sector Logic

Star switch

Slave board

Patch panel

ASD BCID

SoftwareSoftware

2004/12/23 2004アトラス総会 5

Trigger signal from TGC►limited angle, only from vertex

Low pt

High pt

Low pt

High pt

M1M2

M3

Z (mm)

R (

mm

)

From Update of From Update of Technical Design Technical Design Report , 09 June Report , 09 June 20002000

2004/12/23 2004アトラス総会 6

On detector

1/12 slice test using test pulse and cosmic ray

►Assembling of 1/12 of TGC at building 180►Objective

● Final check of chamber and elec. before installation● Fine delay value confirmation

►Remarks● Angle of cosmic ray is limited for triggering● Trigger board with FPGA

High-ptboard

Star switch

Slave board

Patch panel

ASD

Trigger board

2004/12/23 2004アトラス総会 7

TOF

Test pulse run►Pulse to ASD via Patch panel through variable

delay►Objectives

● Confirmation of Coarse delay value● Level 1 buffer depth turning

►Remarks● Simulate signal from particle

►Time of Flight►Cable length correction

High-ptboard

Sector Logic

Star switch

Slave board

Patch panel

ASD

MuCTPI

Synchronous

Test Pulse

L1BL1B

2004/12/23 2004アトラス総会 8

~ 5 million cosmic muons~ 5 million cosmic muons enter the cavern enter the cavern in 15 minutesin 15 minutes

upper hit

lower hit

Event

Cosmic ray run►Objectives

● Confirmation of delay values

● Chamber response to real particle

● Supply trigger for other detectors

►Remarks● Mainly vertical flux● TOF correction by delay

should be reversed at upper side

ATLAS Overview WeekATLAS Overview Week           Saturday 02 October 2004Saturday 02 October 2004Pre-collision overviewPre-collision overview R McPherson Univ. of Victoria Univ. of Victoria

2004/12/23 2004アトラス総会 9

Total rate 105 kHz E > 10 GeV 16 kHzE > 100 GeV 1 kHzE > 1 TeV 10 Hz

L=1034

Muons at cavern entranceMuons at cavern entrance

E (GeV)

Single beam run►Beam halo muon►Scattering of beam by r

esidual gas►Objectives

● Beam crossing clock phase tuning

● Overall check ● Provide trigger for other d

etectors ►Remarks

● Halo, only inner, TOF corr. reversed at upstream

● Gas, low pt. ATLAS Overview WeekATLAS Overview Week           Saturday 02 October 2004Saturday 02 October 2004Pre-collision overviewPre-collision overview R McPherson Univ. of Victoria Univ. of Victoria

2004/12/23 2004アトラス総会 10

Summary of Programs►Run type, turning parameters

Rate timingL1B depth turning

BC clock phase turning

Trigger for other detectors

From when

1/12 slice test

goodfine

delayNo No No

assembling of 1/12

Test pulse goodCoarse delay

yes No yescabling and low

vol.

Cosmic rayvertical mainly

yesyes

TOF corr.No

yesTOF corr.

HV on

Beam haloinner

mainly yes

yesTOF corr.

yesTOF corr.

yesTOF corr.

Single-beam

Beam gasyes

low ptyes yes yes yes

Single-beam

2004/12/23 2004アトラス総会 11

Summary

►Trigger performance check at bench test with hardware simulation software

►Timing parameter confirmation and tuning at commissioning stage, step by step ► Test pulse► Cosmic ray► Single beam; beam-halo and beam-gas

►Detector performance test by cosmic and single beam run► Cosmic ray► Single beam; beam-halo and beam-gas