Adtx threshold scan
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ADTX Threshold Scan. RIKEN/RBRC Itaru Nakagawa. Run13 ADTX Threshold Scan. March 3, 2013 MUID1D HV=Run12 Nominal Setting MuTrig e-Log entry=#1127. Run13 ADTX Threshold Scan. Fake Hit Rates (South). Logic=AND2. Logic=OR. Logic=OR. Octant-3 doesn’t necessarily stands out

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ADTX Threshold Scan

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Adtx threshold scan

ADTX Threshold Scan

RIKEN/RBRC

Itaru Nakagawa


Run13 adtx threshold scan

Run13 ADTX Threshold Scan

  • March 3, 2013

  • MUID1D

  • HV=Run12 Nominal Setting

  • MuTrige-Log entry=#1127


Run13 adtx threshold scan1

Run13 ADTX Threshold Scan


Fake hit rates south

Fake Hit Rates (South)

Logic=AND2

Logic=OR

Logic=OR

Octant-3 doesn’t necessarily stands out

-> AND2 effect?


Sanghwa s gap by gap threshold scan

Sanghwa’s Gap-by-Gap Threshold Scan

South St-1 Oct-2

Gap-2 Noisy

Feb.2013


Fake hit rates north

Fake Hit Rates (North)

Logic=AND2

Logic=OR

Logic=OR

North Station-3 Octant-1 stands out

Vertical Axis : (average hits/strip)/total#of_trigger / 106ns [Hz]


Inter station comparison south

Inter Station Comparison (South)


Inter station comparison north

Inter Station Comparison (North)


Accidental coincidence fake sg1 trigger

Accidental Coincidence Fake SG1 Trigger

  • SG1 ~ R_st1 x R_st2 x R_st3


Accidental sg1 prediction

Accidental SG1 Prediction


Accidental sg1 prediction1

Accidental SG1 Prediction

North Octant-1 Stands out, but not Octant-4


Sg1 rate octant fraction south

SG1 Rate Octant Fraction (South)

Compares Actual SG1 Trigger Rates/oct from Emulator

and Prediction from Fake hit rates.

Run#385753 : Threshold=20mV

Red Dot : Emulator

Horizontal Bar : Prediction from Fake Rates


Sg1 rate octant fraction north

SG1 Rate Octant Fraction (North)

Run#385753 : Threshold=20mV

  • Disagree more than 3sigma.

  • Both plots are from same data. Why?

  • Deadtime?

Red Dot : Emulator

Horizontal Bar : Prediction from Fake Rates


Inter station comparison south1

Inter Station Comparison (South)


Inter station comparison north1

Inter Station Comparison (North)

Normalized


Load map to threshold optimization

Load Map to Threshold Optimization

  • Before Run13 : Thresholds are set to be constant charge efficiencies.

  • Run13 Concept

    • R_oct1=R_oct2=R_oct3=…= R_oct8

    • Raise threshold of station which has steeper response to threshold regardless of noisy source St.

  • Analyze Charge efficiency

    • Eff_AND2 -> [1 - (1-eff_g1xeff_g2)x (1-eff_g3)]

      • eff_g? = 0.9 => Eff_AND2=0.98

    • Eff_OR -> [ 1- (1-eff)^2]

      • eff=0.9 => eff_OR=0.99


Run12 eff 95 config

Run12 Eff=95% Config


Backup

Backup


Adtx threshold scan

(Log)


Adtx threshold scan

(log)


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