1CLAS12RICHElectronicsMee6ng,8-10thFebruary2017

CROSS-TALKSTUDIES

2

Decembermee6ng–Version3.0:-  Digitalfeedbacksolved-  Noneedtofurtherop6mizethedigitalswing-  NoneedtofurthertunetheCTESTimpedance

Tobedone:-ADCglitchesàwrotetoOmegaproducer-  Systema6cstudyofcross-talkofinputlines-  Responsetolaser-  Characteriza6on

-gainvsthreshold-hit6mevsdura6on-TDCvsADC

Overview

3

AverageMAPMTgain~2.7106correspondstoSPE~400fC

MAPMTGain

4

MAPMTGain

PMTGAIN2.07 PMTGAIN5.23 PMTGAIN1.50

x1

x1.5

x1

x0.75

x1

X2.0

AverageMAPMTgain~2.7106correspondstoSPE~400fC

MeasuredatthelaserbenchinTEDbuilding

50 100 1500

500

1000

1500

2000

2500

0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8

2

5

CTESTOnboardPulser

Channel

Charge

Xtalk(%

)

Channel0-2 CTESTInput CTESTInput CTESTInputChannel0-2 Channel0-2

presentregardlesstherou6ngàlikelyMAROCfeature

LH-RHXtalk

6

CLAS12RICHProjectMidtermStatus

Le]ORrightchannelsreadoutoncon6guouscircuits

7

JLabLaserTest

FiredPixelElectronic– Xtalk:con6guouscircuitsSensor-Xtalk:con6guouspixelsElectronic+SensorXtalk

3xMAROC6le,PMTcoveredbymaskswithsmallholes

GA0501CA7683 GA0541

8

GA0501@Gain1

~20fC~1/20SEP

9

GA0501@Gain4

Sensor

Electronic

~20fC~1/80SEP

10

GA0501@Gain4

Electronic

Sensor

LOGSCALE

LightLeak

10-2

10-1

1

10Ef

ficie

ncy

(%)

10-2

10-1

1

10

10 2

0 1 2 3 4Preamp Gain

Xtal

k (%

)

11

GA0501

+3.6%

YieldvsGain

12

GA0501@Gain4

Electronic

Sensor

LOGSCALE

LightLeak

13

GA0303–LaserSPE–Nomask