some feedbacks from drs data analysis (very preliminary) f. scuri - i.n.f.n sezione di pisa rd52 ...
DESCRIPTION
180 Gev pions on Tower 15; run 9350, RD-52 run started only to have trigger signal in time with the analog detector signal Calibration constants from SeeWock No cuts possbile ! Event writing rate on the host laptop not matching the timing of the RD52 DAQ. S15 / C15 analog signal attenuated with a passive attenuator to avoid ADC saturation (6dB (:2) or 12dB (:4), I didn’t mark on the logbook !) 30 seconds / event (only Scintillation) is the processing time in my laptop … == > Only a small fraction of the available statistics processed Data taking summary F. Scuri 12/03/20133TRANSCRIPT
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Some feedbacks from DRS data analysis(very preliminary)
F. Scuri - I.N.F.N Sezione di Pisa
RD52 – Collaboration Meeting – Pavia, March 12, 2013
F. Scuri 12/03/2013
Sorry for the poor quality of the slides, last minute assembly ……
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DRS
16 chs
S3 = ADC12 C3 = N.C
S9 = ADC0 C9 = N.C
S13= ADC8 S14= ADC1 S15= ADC2 S16= ADC4 S17 = ADC9C13=ADC10 C14=ADC5 C15 = ADC6 C16=ADC7 C17 =ADC14
S21= ADC4 C21= ADC11
S27= ADC13 C27 = N.C.
T1 T2 T3 T4 T5 T6
T7 T8 T9 T10 T11 T12
T13 T14 T15 T16 T17 T18
T19 T20 T21 T22 T23 T24
T25 T26 T27 T28 T29 T30
T31 T32 T33 T34 T35 T36
DRS readout geometry
Trigger = ADC15
F. Scuri 12/03/2013
USB
Personal laptop + DRS = “pocket DAQ”
Physics and ped. Triggerfrom the RD52 DAQ
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180 Gev pions on Tower 15; run 9350, RD-52 run started only to have trigger signal in time with the analog detector signal
Calibration constants from SeeWock
No cuts possbile ! Event writing rate on the host laptop not matching the timingof the RD52 DAQ.
S15 / C15 analog signal attenuated with a passive attenuator to avoid ADC saturation(6dB (:2) or 12dB (:4), I didn’t mark on the logbook !)
30 seconds / event (only Scintillation) is the processing time in my laptop … == > Only a small fraction of the available statistics processed
Data taking summary
F. Scuri 12/03/2013
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S1 S2 S3 S4 S5
S7 S8 S9 S10 S11
S13 S14 S15 S16 S17 (attenuated)
S19 S20 S21 S22 S23
S25 S26 S27 S28 S29
Integrated Charge - Scintillation
F. Scuri 12/03/2013
No tail in this distribution …. … uhmm…
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S1 S2 S3 S4 S5
S7 S8 S9 S10 S11
S13 S14 S15 S16 S17 (attenuated)
S19 S20 S21 S22 S23
S25 S26 S27 S28 S29
Saturation in the analog input !
Peak amplitude - Scintillation
F. Scuri 12/03/2013
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S1 S2 S3 S4 S5
S7 S8 S9 S10 S11
S13 S14 S15 S16 S17 (attenuated)
S19 S20 S21 S22 S23
S25 S26 S27 S28 S29
Pulse time profiles
Different average time profileTwo component distribution
F. Scuri 12/03/2013
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Event 2: regular shape
Event 3: “saturated signal” shape
T15 and T16 S-time profiles
F. Scuri 12/03/2013
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40 ns signal charge integration window
20 ns tail charge integration window
F. Scuri 12/03/2013
Time window regions
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S1 S2 S3 S4 S5
S7 S8 S9 S10 S11
S13 S14 S15 S16 S17
S19 S20 S21 S22 S23
S25 S26 S27 S28 S29
Charge integral ratio : tail window / signal window
F. Scuri 12/03/2013
Non-Gaussian !
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Ave: 0.162RMS: 0.035
Ave: 0.138RMS: 0.022
Ave : 0.157RMS: 0.040
Ave: 0.138RMS: 0.023
Ave : 0.126RMS: 0.026
Ave : 0.132RMS: 0.022
Ave : 0.157RMS: 0.031
Ave : 0.135RMS: 0.025
Ave : 0.148RMS: 0.034
Almost constant average ratios and RMS in each ring !
Integrated charge ratio: distribution statistics
F. Scuri 12/03/2013
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Reconstructed positionwith the method of thecenter of mass of theenergy deposition(S15 excluded)
Reconstructed beamspot not centered:
- Bad detector positioning or- Non perfect calibration or- Just the tilt effect ?
F. Scuri 12/03/2013
mm
mm
12F. Scuri 12/03/2013
Next to do
• Look at the Cherenkov channels
• Check that there is no difference among channels in the ratio of charge integration regions
• Study the correlation of the ratio in scintillation vs C/S
• Very difficult, however, with the problems in the central tower T15
• Think about some method to clean-up the sample by using timing information available with DRS