Proton Calorimetry/Experimental Runs/2015/Dec21-22

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Include all details of experimental runs from Anastasia's PDFs.

PAGE UNDER CONSTRUCTION


21/12/2015

Notes:

  • Current at -1200 V: 200.9 μA (beam off)
  • Some doble peaks and very large signals present - noise of some sort?
  • Background rate (-1200 V, beam off, 3 mm collumator): ~4 kHz
    • Threshold: -19.5 mV
    • Rise time: 2.5 ns (without averaging), 2.9 ns over 10 sweeps
    • Amplitude: ~75 mV over 10 sweeps
  • Having the corridor lights on does NOT create enough light to trip the PMT and is acceptable! (Current goes up by 0.1 μA)
  • Peak current estimate at -1100 V: 44 mA
    • Amplitude: 2.2 V
    • Width: ~20 ns
High Voltage (V) Trigger Rate + Additional Information Electronics Setup Collimator Size + Additional Information Run Number
-1200 ST
  • Rate: ~4 kH
  • Rec. Length: 456 ns
  • BL Mean: 32
  • Charge sens.: 20 pC/LSB
  • Threshold: 40 LSB
  • Gate offset: 20 ns
  • Short gate: 50 ns
  • Long gate: 100 ns
  • DC Offset: 0
  • Pre-trigger: 48 ns
 3 mm
  • Background measurement (beam off)
 001 (4,462 events)
-1200 ST I: Tripped 3mm
-800 ST
  • Amplitude: 300 mV (-194 mV threshold)
  • I: 152.5 μA
  • Rate: ~500 kHz
-800 ST
  • I: 133.4 μA
  • Rate: ~4 kHz
  • Unstable beam
 Long gate: 100 ns
  • Gas off (leakage)
  • 0 arc current (±0.1 μA)
  • 0.1 dose
 002 (845,794 events)
-900 ST I: 150.3 μA Edge on peak 003-004
-1000 ST I: 167.3 μA 005
-1100 ST I: 184.1 μA Peak shifted during running 006
-1100 ST
  • Rate: ~2 kHz - 25 kHz
  • Unstable
 Long gate: 200 ns 2 mm
  • gas off
  • 0 arc current
 007 (~3,000 events in peaks)
-1100 ST
  • Rate ~19 kHz
  • I: 184.1 μA
  • Stable rate
 Long gate: 200 ns
  • 0.2 cc/minute
  • Arc current ~0
 008 (6,000 events in peak)
-1100 ST Long gate: 250 ns 009
-1100 ST Long gate: 150 ns 010
-1100 ST Long gate: 100 ns 011
-1100 ST Long gate: 200 ns (irrelevant) Waveforms 012-14
-1100 ST
  • Rate: 14 kHz
  • I: 184 μA
  • Beam dropped due to preset time running out
  • PMMA is in range shifter box, upstream
  • Long gate: 200 ns
 2 mm
  • + 5.07 mm of PMMA (1 plate)
 015 (600,000 events)
-1100 ST Long gate: 200 ns Repeat above with larger stats 016 (1,000,000 events)
-1100 ST Long gate: 100 ns 017 (1,000,000 events)
-1100 ST Long gate: 100 ns Waveforms (~2 GB) 019
-1100 ST
  • Rate: 1.3 kHz
  • I: 183.99 μA
 Long gate: 200 ns 9.8 mm of PMMA (1 plate) 020
-1100 ST Long gate: 100 ns 021
-1100 ST Long gate: 100 ns Waveforms (~2 GB) 023
-1100 ST Rate: 30 kHz Long gate: 200 ns Upped current at 0.1 mA 025 (300,000 events)
-1100 ST Long gate: 100 ns 026 (300,000 events)
-1100 ST Long gate: 100 ns Waveforms (~2 GB) 027
-1100 ST Long gate: 200 ns 17.94 mm of PMMA
  • 9.04 mm + 8.9 mm, 2 plates
 028 (400,000 events)
-1100 ST Long gate: 100 ns Waveforms (~2 GB) 031
-1100 ST Long gate: 200 ns 19.94 mm of PMMA
  • 9.04 mm + 10.9 mm, 2 plates
 032 (400,000 events)
-1100 ST Long gate: 100 ns 033 (300,000 events)
-1100 ST I: 184 μA Long gate: 100 ns 035 (400,000 events)
-1100 ST
  • Rate: 150 kHz
  • I: 184.9 μA
 Long gate: 200 ns No PMMA 036 (2,000,000 events)
-1100 ST Long gate: 100 ns 037 (2,000,000 events)
-1100 ST Long gate: 100 ns Waveforms (~2 GB) 039
-1100 ST Long gate: 50 ns 040 (2,000,000 events)
-1100 ST Long gate: 60 ns 041 (1,500,000 events)
-1100 ST Long gate: 70 ns 042 (1,500,000 events)
-1100 ST Long gate: 80 ns 043 (1,500,000 events)
-1100 ST Long gate: 90 ns 044 (1,500,000 events)
Break for lunch
-1100 ST
  • Rate: 200 kHz
  • I: 185.3 μA
 Long gate: 200 ns 045 (2,000,000 events)
-1100 ST Long gate: 100 ns 046 (2,000,000 events)
-1100 ST Long gate: 50 ns 047 (2,000,000 events)
-1100 ST Long gate: 50 ns Waveforms (~2 GB) 049
-1100 ST
  • Rate: 400 kHz
  • I: 209 μA
 Long gate: 200 ns 050 (2,000,000 events)
-1100 ST Long gate: 100 ns 051 (2,000,000 evvents)
-1100 ST Long gate: 50 ns 052 (2,000,000 events)
-1100 ST Long gate: 30 ns 053 (3,000,000 events)
-1100 ST
  • Long gate: 20 ns
  • Short gate: 19 ns
 054 (2,000,000 events)
-1100 ST Note: Intrinsic spread in energy during running for ~1 s
  • Long gate: 20 ns
  • Short gate: 19 ns
 Waveforms (~2 GB) 056
-1100 ST
  • Gate offset: 1 ns
  • Long gate: 30 ns
 057 (2,500,000 events)
-1100 ST Long gate: 20 ns 059 (2,000,000 events)
-1100 ST
  • Rate: 450-550 kHz
  • I: 211.6 μA
  • Gate offset: 18 ns
  • Long gate: 100 ns
 060 (4,000,000 events)
-1100 ST
  • Gate offset: 10 ns
  • Long gate: 50 ns
 061 (4,000,000 events)
-1100 ST
  • Gate offste: 1 ns
  • Long gate: 30 ns
 062 (3,000,000 events)
-1100 ST
  • Gate offset: 1 ns
  • Long gate: 20 ns
 063 (3,000,000 events)
-1100 ST
  • I: 211.9 μA
  • Rate: 450-500 kHz
  • Gate offset: 18 ns
  • Long gate: 100 ns
 Waveforms (~3 GB) 066

22/12/2015

High Voltage (V) Trigger Rate + Additional Information Electronics Setup Collimator Size + Additional Information Run Number
-900 ST
  • Rate: 30 kHz
  • Peak ~7000 ADC
  • I: 150.2 μA
  • Long gate: 100 ns
  • Gate offset: 18 ns
 002 (1,000,000 events)
-950 ST
  • I: 158.8 μA
  • Rate: 30 kHz
  • Peak ~9000 ADC
 Long gate: 100 ns 003 (3,000,000 events)
-950 ST Long gate: 200 ns 004 (2,000,000 events)
-950 ST Long gate: 50 ns 005 (1,000,000 events)
-950 ST Long gate: 200 ns Waveforms (~2 GB) 007
-950 ST
  • Rate: 60-50 kHz
 Long gate: 100 ns 008 (2,000,000 events)
-950 ST
  • Rate: 50-40 kHz
  • Current on beam dropped during run, creating shoulder
 Long gate: 200 ns 5.07 mm of PMMA (1 plate)
  • wd: scan
 009 (2,000,000 events)
-950 ST Rate: 70 kHz Long gate: 200 ns 010 (2,000,000 events)
-950 ST Long gate: 100 ns 011 (2,000,000 events)
-950 ST Long gate: 200 ns 9.8 mm of PMMA (1 plate) 012 (2,000,000 events)
-950 ST Long gate: 100 ns 013 (2,000,000 events)
-950 ST Long gate: 200 ns 14.12 mm of PMMA (1 plate) 014 (2,000,000 events)
-950 ST Long gate: 100 ns 015 (2,000,000 events)
-950 ST Long gate: 200 ns 17.94 mm of PMMA
  • 9.04 mm + 8.9 mm, 2 plates
 016 (2,000,000 events)
-950 ST Long gate: 100 ns 017 (2,000,000 events)
-950 ST I: 158.7 μA Long gate: 200 ns 19.94 mm of PMMA
  • 9.04 mm + 10.9 mm, 2 plates
 018 (2,000,000 events)
-950 ST Long gate: 100 ns 019 (2,000,000 events)
-950 ST Beam dropped Long gate: 200 ns 21.70 mm of PMMA
  • 9.04 mm + 12.66 mm, 2 plates
 020 (1,000,000 events)
-950 ST Repeat above run after beam drop Long gate: 200 ns 021 (2,000,000 events)
-950 ST Beam dropped Long gate: 100 ns 022 (900,000 events)
-950 ST Repeat above run after beam drop Long gate: 100 ns 023 (1,500,000 events)
-950 ST Long gate: 200 ns 0 mm PMMA 024 (2,000,000 events)
-950 ST Long gate: 100 ns 025 (2,000,000 events)

Beam tests

High Voltage (V) Trigger Rate + Additional Information Electronics Setup Collimator Size + Additional Information Run Number
-950 ST
  • Rate: ~700 kHz
  • Amplitude has dropped
 Long gate: 100 ns
  • 1.3 mA current
  • 0.2 cc/minute gas
  • wd: tests
 026 (1,500,000 events)
-950 ST
  • Long gate: 50 ns
  • Gate offset: 10 ns
 Focusing angle: 69.1° 027 (2,000,000 events)
-950 ST
  • Long gate: 30 ns
  • Gate offset: 7 ns
 028 (2,000,000 events)
-950 ST
  • Long gate: 200 ns
  • Gate offset: 18 ns
 Waveforms (~2 GB) 030
-950 ST
  • Rate: 600 kHz
  • I: 183 μA
  • Long gate: 60 ns
  • Gate offset: 10 ns
  • 1.01 mA
  • 4.9 dose rate
  • 315 pA
 031 (2,000,000 events)
-950 ST
  • Long gate: 60 ns
  • Gate offset: 10 ns
 Waveforms (~3.5 GB) 033
-950 ST
  • Rate: ~700 kHz (from extrapolation)
  • "Standard" run
  • Long gate: 100 ns
  • Gate offset: 18 ns
  • Arc current: 104 mA
  • Scattering: 0.3 nA
  • Dose rate: 0.6
  • Angle: 64.1°
 034 (2,000,000 events)
-950 ST Rate: >500 kHz (extrapolated)
  • Angle: 65.4°
  • Dose: 3.5
  • Scattering: 0.22 nA
 036 (2,000,000 events)
-950 ST
  • Rate: ~400 kHz (extrapolated)
  • Higher amplitude
  • Angle: 66.5°
  • Dose rate: 2.1
  • Scattering: 0.14 nA
 036 (2,000,000 events)
-950 ST
  • Rate: ~200 kHz (extrapolated)
  • Rate: ~200 kHz (measured on scope)
  • Angle: 67.6°
  • Dose rate: 1.0
  • Scattering: 0.065 nA
 037 (2,000,000 events)
-950 ST Rate: ~100 kHz (extrapolated)
  • Angle: 68.5°
  • Dose: 0.5
  • Scattering: 0.034 nA
 038 (2,000,000 events)
-950 ST
  • Angle: 69.5°
  • Dose: 0.2
  • Scattering: 0.014 na
 039 (2,000,000 events)
-950 ST
  • Angle: 71.5°
  • Dose: 0-0.1
  • Scattering: 0.0033 nA
 040 (1,000,000 events)
-950 ST Higher amplitude / ADC
  • Angle: 73.5°
  • Dose: 0-0.1
  • Scattering: 0.0006 nA
 041 (300,000 events)
-950 ST Back to 71.5° to see where ADC peak is - back to normal Rate (scope):
  • ~88 ms
  • ~20 kHz
 Angle: 71.5° 042 (300,000 events
-950 ST Shifted again Angle: 73.5° 043 (100,000 events)
-950 ST Angle: 66.5° 044 (1,000,000 events)
-950 ST Angle: 65.4° 045 (1,000,000 events)
-950 ST Scope rate: 730 ms
  • ~1.2 kHz
 Angle: 73.5° 047 (50,000 events)
-950 ST Scan across arc current/dose rate to see if there are any shifts in ADC peak Beginning:
  • Dose: 0.4-0.5
  • Scattering: 0.029 nA

Finishing dose: 3

048 (scan)
-950 ST Rate: 500 kHz
  • 2 ms at dose: 3
 At ~600 kHz we get a shift due to frequency cutoff
  • Left peak: 7109
  • Right peak: 8894
 049 (scan)
-950 ST Rate: ~1.2 MHz (extrapolated) Long gate: 100 ns
  • Dose: 13
  • Arc current: 1.7 mA
  • Waveforms (2.7 GB)
 051

Notes:

  • Current at -900 V: 150.2 μA (beam off)
  • Rate at -900 V: 400 kHz (threshold: -194 mV)
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