Proton Calorimetry/Experimental Runs/2018/Mar8-9: Difference between revisions

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Beam tests of the UCL plastic scintillator range calorimeter.
Beam tests of the UCL plastic scintillator range calorimeter.
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== Thursday 8th of March 2018 ==
== Thursday 8th of March 2018 ==
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== Friday 9th of March 2018 ==
== Friday 9th of March 2018 ==

Revision as of 14:34, 12 March 2018

Beam tests of the UCL plastic scintillator range calorimeter.

_TOC_

Thursday 8th of March 2018

Pre-data Taking Information and Notes

  • The tests were carried out with an energy of 36 MeV. A Bragg Peak measurement was carried out to confirm the exact beam energy.
  • Collimators used: 2 mm and 20 mm diameter.
  • PMMA sheets used: 3 mm, taped over the mylar window.
  • The average background value per pixel for the sensor is ~ 2500. The sensor pixel dimensions are 1030 x 1536. The sensor frame rate was always set to 25 frames per second.
  • The DSLR ISO was always set to 200.
  • 6 x 3 mm scintillator sheets were used. The scintillator stack was set up in the following order, starting with the first sheet facing the beam:
    • 31, 32, 33, 34, 35, 48
  • The scintillator stack was coupled to the sensor using optical gel.
  • The dose received (as shown on the monitor in the control room) during the full day of measurements was:
    • With a 2 mm collimator: 746.9 uC
    • With a 20 mm collimator: 417.7 uC
    • With a 2 mm collimator + 3 mm of PMMA: 251.5 uC
  • There current was variable/unstable throughout the day.
  • To calculate the actual dose delivered to the scintillator:
    • / 160 -> to convert to proton current
    • / (50/ collimator diameter)^2 -> to account for reduction in area due to the collimator
  • The directory containing the sensor data is:

/unix/pbt/data/birmingham/mar_2018/EPIX/XCAP/data/20180308_bham

  • The directory containing the DSLR data is:

/unix/pbt/data/birmingham/mar_2018/Nikon/20180308_bham

Data Taking

Run number DSLR Aperture DSLR Exposure Sensor Full Well Mode Sensor Sequence Beam Energy Current on Monitor Collimator Diameter Comments DSLR Thumbnail Sensor Thumbnail
1 f/10 2 s N/A N/A N/A N/A N/A Beam off, lid open. Focus check for DSLR. Low light.

DSC_0001.jpg

N/A
2 f/10 5 s N/A N/A N/A N/A N/A Beam off, lid open. Focus check for DSLR. Low light.

DSC_0002.jpg

N/A
3 f/10 20 s N/A N/A N/A N/A N/A Beam off, lid open. Focus check for DSLR. Low light.

DSC_0003.jpg

N/A
4 f/10 20 s N/A N/A N/A N/A N/A Beam off, lid open. Focus check for DSLR. Focus - okay.

DSC_0004.jpg

N/A
5 f/5 5 s N/A N/A N/A N/A N/A Beam off, lid open. Focus check and background picture with white paper for DSLR.

DSC_0005.jpg

N/A
6 f/10 5 s Low 42 frames N/A N/A N/A Beam off, lid closed, lights off. Background run.

DSC_0006.jpg

N/A
7 f/3.2 2 s Low 21 frames N/A N/A N/A Beam off, lid closed, lights off. Background run.

DSC_0007.jpg

N/A
8 f/3.2 10 s Low 21 frames 36 MeV 1 uA 2 mm Beam on.

DSC_0008.jpg

N/A
9 N/A N/A Low 21 frames 36 MeV 1 uA 2 mm Beam on. N/A N/A
10 f/3.2 10 s Low 1 frame 36 MeV 0.8 uA 2 mm Beam on.

DSC_0010.jpg

Frame0001.jpg

11 f/3.2 10 s Low 21 frames 36 MeV 0.8 uA 2 mm Beam on.

DSC_0011.jpg

N/A
12 f/3.2 10 s Low 21 frames 36 MeV 10 nA 20 mm Beam on.

DSC_0012.jpg

Frame0001.jpg

13 f/3.2 10 s Low 21 frames 36 MeV 20 nA 20 mm Beam on. At this current sensor is saturated on low full well mode. Unable to switch sensor into high full well mode so no sensor data taken until a return to low currents.

DSC_0013.jpg

Image.jpg

14 f/3.5 10 s N/A N/A 36 MeV 50 nA 20 mm Beam on.

DSC_0014.jpg

N/A
15 f/3.5 5 s N/A N/A 36 MeV 60 nA 20 mm Beam on.

DSC_0015.jpg

N/A
16 f/3.5 2 s N/A N/A 36 MeV 100 nA 20 mm Beam on.

DSC_0016.jpg

N/A
17 f/3.5 1 s N/A N/A 36 MeV 100 nA 20 mm Beam not caught on image.

DSC_0017.jpg

N/A
18 f/3.5 1 s N/A N/A 36 MeV 100 nA 20 mm Some beam caught on image.

DSC_0018.jpg

N/A
19 f/3.5 1 s N/A N/A 36 MeV 100 nA 20 mm Beam on.

DSC_0019.jpg

N/A
20 f/4 1 s N/A N/A 36 MeV 200 nA 20 mm Variable beam current.

DSC_0020.jpg

N/A
21 f/4 1 s N/A N/A 36 MeV 260 nA 20 mm Beam on.

DSC_0021.jpg

N/A
22 f/4 1 s N/A N/A 36 MeV 260 nA 20 mm Beam on.

DSC_0022.jpg

N/A
23 f/4.5 1 s N/A N/A 36 MeV 500 nA 20 mm Beam on.

DSC_0023.jpg

N/A
24 f/4.5 1/2 s N/A N/A 36 MeV 500 nA 20 mm Beam on.

DSC_0024.jpg

N/A
25 f/3.2 1/2 s N/A N/A 36 MeV 800 nA 20 mm Beam on. Saturation test for DSLR.

DSC_0025.jpg

N/A
26 f/6.3 1/2 s N/A N/A 36 MeV 800 nA 20 mm Some beam caught on image.

DSC_0026.jpg

N/A
27 f/6.3 1/2 s N/A N/A 36 MeV 850 nA 20 mm Beam on.

DSC_0027.jpg

N/A
28 f/7.1 1/2 s N/A N/A 36 MeV 1 uA 20 mm Beam not caught on image.

DSC_0028.jpg

N/A
29 f/7.1 1/2 s N/A N/A 36 MeV 1.1 uA 20 mm Beam on.

DSC_0029.jpg

N/A
30 f/7.1 1/2 s N/A N/A 36 MeV 1.1 uA 20 mm Some beam caught on image.

DSC_0030.jpg

N/A
31 f/7.1 1/2 s N/A N/A 36 MeV 950 nA 20 mm Beam on.

DSC_0031.jpg

N/A
32 f/8 1/2 s N/A N/A 36 MeV 1.1 uA 20 mm Beam on.

DSC_0032.jpg

N/A
33 f/10 1/2 s N/A N/A 36 MeV 1.2 uA 20 mm Beam on.

DSC_0033.jpg

N/A
34 f/3.2 10 s N/A N/A 36 MeV 1.1 uA 2 mm Radiation damage assessment.

DSC_0034.jpg

N/A
35 f/3.2 10 s Low 21 frames 36 MeV 1.1 uA 2 mm Beam on.

DSC_0035.jpg

Image.jpg

36 N/A N/A Low 21 frames 36 MeV - 3 mm PMMA 1.1 uA 2 mm Beam not caught on DSLR image, okay for sensor.

N/A

Image.jpg

37 f/3.2 10 s Low 21 frames 36 MeV - 3 mm PMMA 1 uA 2 mm Beam on.

DSC_0037.jpg

Image.jpg

Friday 9th of March 2018

Pre-data Taking Information and Notes

  • The tests were carried out with an energy of 36 MeV. A Bragg Peak measurement was carried out to confirm the exact beam energy.
  • Collimators used:20 mm diameter.
  • PMMA sheets used: 3 mm, 2 mm and 1 mm, taped over the mylar window.
  • The average background value per pixel for the sensor is ~ 2500. The sensor pixel dimensions are 1030 x 1536. The sensor frame rate was always set to 25 frames per second.
  • The DSLR ISO was always set to 200.
  • 8 x 32 mm scintillator sheets were used. The scintillator stack was set up in the following order, starting with the first sheet facing the beam:
    • 7, 10, 13, 14, 15, 17, 18, 19
  • Optical gel was not used for coupling, the sensor was placed directly on top of the scintillator stack.
  • The dose received (as shown on the monitor in the control room) during the full day of measurements was:
    • With a 2 mm collimator: 746.9 uC
    • With a 20 mm collimator: 417.7 uC
    • With a 2 mm collimator + 3 mm of PMMA: 251.5 uC
  • There current was variable/unstable throughout the day.
  • To calculate the actual dose delivered to the scintillator:
    • / 160 -> to convert to proton current
    • / (50/ collimator diameter)^2 -> to account for reduction in area due to the collimator
  • The directory containing the sensor data is:

/unix/pbt/data/birmingham/mar_2018/EPIX/XCAP/data/20180309_bham

  • The directory containing the DSLR data is:

/unix/pbt/data/birmingham/mar_2018/Nikon/20180309_bham

Data Taking

Run number DSLR Aperture DSLR Exposure Sensor Full Well Mode Sensor Sequence Beam Energy Current on Monitor Collimator Diameter Comments DSLR Thumbnail Sensor Thumbnail
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