Proton Calorimetry/Experimental Runs/2018/Mar8-9

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Beam tests of the UCL plastic scintillator range calorimeter.

Contents


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.
  • Data was acquired with the DSLR camera and the ISDI CMOS sensor:
    • 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 setup can be seen in the following pictures:

scintillator_and_sensor.jpg IMG_3006.jpg

  • The centre of the "bare" scintillator (where the vice is not covering any of the scintillator face) was marked on the Mylar window and lined up with the beam using a film:

IMG_3009_rotated.jpg

  • 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
  • The 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. 3 mm of PMMA taped over Mylar window.

N/A

Image.jpg

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

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 and 28 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.
  • Data was acquired with the DSLR camera and the ISDI CMOS sensor:
    • 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.
    • The light level in order to not saturate the sensor was reduced by placing green and blue see-through sheets in between the sensor and the scintillator stack for some of the tests.
  • 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:
    • For the 36 MeV beam
      • With a 20 mm collimator: 435.5 uC
      • With a 20 mm collimator + PMMA sheets: 17.3 uC
      • With a 20 mm collimator + films inserted between scintillator stack and sensor: 536.2 uC
    • For the 28 MeV beam
      • With a 20 mm collimator: 47.7 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
38 f/3.2 2 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_0038.jpg

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

DSC_0039.jpg

Image.jpg

40 f/3.2 2 s Low 21 frames 36 MeV 10 nA 20 mm Beam on.

DSC_0040.jpg

Image.jpg

41 f/3.2 5 s N/A N/A 36 MeV 10 nA 20 mm Beam on.

DSC_0041.jpg

N/A
42 f/3.2 5 s N/A N/A 36 MeV 10 nA 20 mm Beam on. Sensor realigned after this run to be straighter with respect to scintillator stack.

DSC_0042.jpg

N/A
43 f/3.2 5 s Low 21 frames 36 MeV 10 nA 20 mm Beam on. Sensor realigned after this run to be straighter with respect to scintillator stack.

DSC_0043.jpg

Image.jpg

44 f/3.2 5 s Low 21 frames 36 MeV 10 nA 20 mm Beam on. Sensor realigned after this run to be straighter with respect to scintillator stack.

DSC_0044.jpg

Image.jpg

45 f/3.2 10 s N/A N/A 36 MeV 5 - 10 nA 20 mm Beam on.

DSC_0045.jpg

N/A
46 f/3.2 5 s Low 21 frames 36 MeV 20 nA 20 mm Beam on.

DSC_0046.jpg

Image.jpg

47 f/4 5 s N/A N/A 36 MeV 20 nA 20 mm Beam on.

DSC_0047.jpg

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

DSC_0048.jpg

N/A
49 f/5 5 s Low 21 frames 36 MeV 50 nA 20 mm Beam on. Both camera and sensor saturated.

DSC_0049.jpg

Image.jpg

50 f/8 5 s N/A N/A 36 MeV 50 nA 20 mm Beam on. Variable beam during acquisition.

DSC_0048.jpg

N/A
51 f/8 5 s N/A N/A 36 MeV 50 nA 20 mm Beam on. Stable beam.

DSC_0051.jpg

N/A
52 f/8 5 s High 21 frames 36 MeV 50 nA 20 mm Beam on.

DSC_0052.jpg

Image.jpg

53 f/8 5 s High 21 frames N/A N/A N/A Beam off. Background run for sensor in high full well mode.

DSC_0053.jpg

Image.jpg

54 f/8 5 s High 21 frames 36 MeV 100 nA 20 mm Beam on.

DSC_0054.jpg

Image.jpg

55 f/8 2 s N/A N/A 36 MeV 90 nA 20 mm Beam on.

DSC_0055.jpg

N/A
56 f/8 2 s High 21 frames 36 MeV 200 nA 20 mm Beam on.

DSC_0056.jpg

Image.jpg

57 f/8 1 s N/A N/A 36 MeV 200 nA 20 mm Beam on. Sensor near saturation.

DSC_0057.jpg

N/A
58 f/8 1 s N/A N/A 36 MeV 300 nA 20 mm Beam on. Variable beam during acquisition.

DSC_0058.jpg

N/A
59 f/8 1 s High 21 frames 36 MeV 300 nA 20 mm Beam on. Stable beam. Sensor saturation occurs.

DSC_0059.jpg

Image.jpg

60 f/8 1 s High 21 frames 36 MeV 450 nA 20 mm Beam on.

DSC_0060.jpg

Image.jpg

61 f/8 1/2 s N/A N/A 36 MeV 450 nA 20 mm Beam on.

DSC_0061.jpg

N/A
62 f/8 1/2 s N/A N/A 36 MeV 470 nA 20 mm Beam on.

DSC_0062.jpg

N/A
63 f/13 1/2 s N/A N/A 36 MeV 600 nA 20 mm Beam on.

DSC_0063.jpg

N/A
65 f/13 1/2 s Low 21 frames 36 MeV 1.1 uA 20 mm Beam on.

DSC_0065.jpg

Image.jpg

66 f/13 1/2 s N/A N/A 36 MeV 1 uA 20 mm Beam on. Low beam during acquisition.

DSC_0066.jpg

N/A
67 f/13 1/2 s N/A N/A 36 MeV 1 uA 20 mm Beam on. Stable beam.

DSC_0067.jpg

N/A
68 f/8 1 s High 21 frames 36 MeV 200 nA 20 mm Beam on.

DSC_0068.jpg

Image.jpg

69 f/3.2 5 s High 21 frames 36 MeV 13 nA 20 mm Beam on. Some beam captured on DSLR image.

DSC_0069.jpg

Image.jpg

70 f/3.2 5 s Low 21 frames 36 MeV 15 nA 20 mm Beam on.

DSC_0070.jpg

Image.jpg

71 f/3.2 2 s N/A N/A 36 MeV 15 nA 20 mm Beam on.

DSC_0071.jpg

N/A
72 f/3.2 1 s Low 21 frames 36 MeV - 3 mm PMMA 30 nA 20 mm Beam on. 3 mm of PMMA taped over Mylar window.

DSC_0072.jpg

Image.jpg

73 f/3.2 1 s Low 21 frames 36 MeV - (3 mm + 2 mm PMMA) 30 nA 20 mm Beam on. 3 mm + 2 mm of PMMA taped over Mylar window.

DSC_0073.jpg

Image.jpg

74 f/3.2 1 s N/A N/A 36 MeV - (3 mm + 2 mm PMMA) 30 nA 20 mm Beam on. 3 mm + 2 mm of PMMA taped over Mylar window.

DSC_0074.jpg

N/A
75 f/3.2 1 s Low 21 frames 36 MeV 25 nA 20 mm Beam on. Green film inserted between scintillator stack and sensor.

DSC_0075.jpg

Image.jpg

76 f/8 1 s Low 21 frames 36 MeV 100 nA 20 mm Beam on. Green film inserted between scintillator stack and sensor.

DSC_0076.jpg

Image.jpg

77 f/8 1/2 s Low 21 frames 36 MeV 500 nA 20 mm Beam on. Green film inserted between scintillator stack and sensor. Sensor saturated on low full well mode.

DSC_0077.jpg

Image.jpg

78 f/8 1/2 s High 21 frames 36 MeV 480 nA 20 mm Beam on. Green film inserted between scintillator stack and sensor. Sensor not saturated on high full well mode.

DSC_0078.jpg

Image.jpg

79 f/13 1/2 s High 21 frames 36 MeV 900 nA 20 mm Beam on. Green film inserted between scintillator stack and sensor. Sensor shows some saturation on high full well mode.

DSC_0079.jpg

Image.jpg

80 f/13 1/2 s High 21 frames 36 MeV 700 nA 20 mm Beam on. Green film inserted between scintillator stack and sensor. Sensor saturation occurs.

DSC_0080.jpg

Image.jpg

81 f/13 1/2 s High 21 frames 36 MeV 1 uA 20 mm Beam on. Green + blue films inserted between scintillator stack and sensor.

DSC_0081.jpg

Image.jpg

82 f/13 1/2 s N/A N/A 36 MeV 1.1 uA 20 mm Beam on. Green + blue films inserted between scintillator stack and sensor.

DSC_0082.jpg

N/A
83 f/13 1/2 s High 21 frames 36 MeV 1.1 uA 20 mm Beam on. Green + blue films inserted between scintillator stack and sensor. Some beam captured on DSLR image.

DSC_0083.jpg

Image.jpg

84 f/3.2 1 s Low 21 frames 36 MeV - 2 mm PMMA 30 nA 20 mm Beam on. Green + blue films inserted between scintillator stack and sensor. 2 mm PMMA sheet taped in front of Mylar window.

DSC_0084.jpg

Image.jpg

85 f/3.2 1 s Low 21 frames 36 MeV - 1 mm PMMA 30 nA 20 mm Beam on. Green + blue films inserted between scintillator stack and sensor. 1 mm PMMA sheet taped in front of Mylar window.

DSC_0085.jpg

Image.jpg

86 f/3.2 5 s Low 21 frames 36 MeV 10 nA 20 mm Beam on. All films and PMMA sheets removed. Back to original settings to monitor scintillator damage.

DSC_0086.jpg

Image.jpg

87 f/3.2 5 s Low 21 frames 36 MeV 10 nA 20 mm Beam on. Back to original settings to monitor scintillator damage.

DSC_0087.jpg

Image.jpg

88 f/3.2 5 s Low 21 frames 28 MeV 10 nA 20 mm Beam on. Beam energy reduced to 28 MeV using RF frequency.

DSC_0088.jpg

Image.jpg

89 f/3.2 5 s N/A N/A 28 MeV 10 nA 20 mm Beam on.

DSC_0089.jpg

N/A
90 f/3.2 1 s Low 21 frames 28 MeV 30 nA 20 mm Beam on.

DSC_0090.jpg

Image.jpg

91 f/3.2 1 s High 21 frames 28 MeV 30 nA 20 mm Beam on.

DSC_0091.jpg

Image.jpg

92 f/8 1 s High 21 frames 28 MeV 300 nA 20 mm Beam on.

DSC_0092.jpg

Image.jpg

93 f/8 1 s High 21 frames 28 MeV 250 nA 20 mm Beam on.

DSC_0093.jpg

Image.jpg


End of test beam.
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