Proton Calorimetry/Experimental Runs/2018/Mar22
Beam tests of the UCL plastic scintillator range calorimeter.
Night of Thursday 22th to Friday 23rd of March 2018
Pre-data Taking Information and Notes
- 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.
- NO optical grease between scintillator and sensor.
- Scintillator stack arrangement: 15 x 2 mm, 15 x 2.6 mm and 1 x 3 mm sheets used: In ascending order from the back of the scintillator to the front/beam. Except for sheet number 21 (2mm) which is placed at the end (away end from the beam) of the stack because of a crack in the sheet.
- Folder for DSLR images: digiCamControl/20180322_medaustron
- Note: When powering on PC, sensor has to be connected, but unpowered!
- 16383 = saturation pixel number (16 bit x 1 tap)
- Sensor images are always saved as a sequence of 21 Tiff images
- Folder for sensor images: XCAP/data/20180322_medaustron
Data Taking
| DSLR | Sensor | Beam | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Run number | ISO | Aperture | Exposure (s) | Full Well Mode | Intensity (%) | Number of particles/s | Beam Energy (MeV) | Test type | Comments | DSLR Thumbnail | Sensor Thumbnail |
| 1 | 200 | f/5 | 1s | Low | N/A | Background | Background run with ND filter |
|
N/A | ||
| 2 | 200 | f/5 | 1s | Low | 100% | 1.2 x 1e10/5s | 80.5 | Bragg peak | ND filter in - not enough light passes through filter. Remove! DSLR slightly saturated. 10 spills used for this run. |
|
N/A |
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
- For the 36 MeV beam
- 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. |
|
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. |
|
|
| 40 | f/3.2 | 2 s | Low | 21 frames | 36 MeV | 10 nA | 20 mm | Beam on. |
|
|
| 41 | f/3.2 | 5 s | N/A | N/A | 36 MeV | 10 nA | 20 mm | Beam on. |
|
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. |
|
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. |
|
|
| 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. |
|
|
| 45 | f/3.2 | 10 s | N/A | N/A | 36 MeV | 5 - 10 nA | 20 mm | Beam on. |
|
N/A |
| 46 | f/3.2 | 5 s | Low | 21 frames | 36 MeV | 20 nA | 20 mm | Beam on. |
|
|
| 47 | f/4 | 5 s | N/A | N/A | 36 MeV | 20 nA | 20 mm | Beam on. |
|
N/A |
| 48 | f/5 | 5 s | N/A | N/A | 36 MeV | 15 nA | 20 mm | Beam on. |
|
N/A |
| 49 | f/5 | 5 s | Low | 21 frames | 36 MeV | 50 nA | 20 mm | Beam on. Both camera and sensor saturated. |
|
|
| 50 | f/8 | 5 s | N/A | N/A | 36 MeV | 50 nA | 20 mm | Beam on. Variable beam during acquisition. |
|
N/A |
| 51 | f/8 | 5 s | N/A | N/A | 36 MeV | 50 nA | 20 mm | Beam on. Stable beam. |
|
N/A |
| 52 | f/8 | 5 s | High | 21 frames | 36 MeV | 50 nA | 20 mm | Beam on. |
|
|
| 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. |
|
|
| 54 | f/8 | 5 s | High | 21 frames | 36 MeV | 100 nA | 20 mm | Beam on. |
|
|
| 55 | f/8 | 2 s | N/A | N/A | 36 MeV | 90 nA | 20 mm | Beam on. |
|
N/A |
| 56 | f/8 | 2 s | High | 21 frames | 36 MeV | 200 nA | 20 mm | Beam on. |
|
|
| 57 | f/8 | 1 s | N/A | N/A | 36 MeV | 200 nA | 20 mm | Beam on. Sensor near saturation. |
|
N/A |
| 58 | f/8 | 1 s | N/A | N/A | 36 MeV | 300 nA | 20 mm | Beam on. Variable beam during acquisition. |
|
N/A |
| 59 | f/8 | 1 s | High | 21 frames | 36 MeV | 300 nA | 20 mm | Beam on. Stable beam. Sensor saturation occurs. |
|
|
| 60 | f/8 | 1 s | High | 21 frames | 36 MeV | 450 nA | 20 mm | Beam on. |
|
|
| 61 | f/8 | 1/2 s | N/A | N/A | 36 MeV | 450 nA | 20 mm | Beam on. |
|
N/A |
| 62 | f/8 | 1/2 s | N/A | N/A | 36 MeV | 470 nA | 20 mm | Beam on. |
|
N/A |
| 63 | f/13 | 1/2 s | N/A | N/A | 36 MeV | 600 nA | 20 mm | Beam on. |
|
N/A |
| 65 | f/13 | 1/2 s | Low | 21 frames | 36 MeV | 1.1 uA | 20 mm | Beam on. |
|
|
| 66 | f/13 | 1/2 s | N/A | N/A | 36 MeV | 1 uA | 20 mm | Beam on. Low beam during acquisition. |
|
N/A |
| 67 | f/13 | 1/2 s | N/A | N/A | 36 MeV | 1 uA | 20 mm | Beam on. Stable beam. |
|
N/A |
| 68 | f/8 | 1 s | High | 21 frames | 36 MeV | 200 nA | 20 mm | Beam on. |
|
|
| 69 | f/3.2 | 5 s | High | 21 frames | 36 MeV | 13 nA | 20 mm | Beam on. Some beam captured on DSLR image. |
|
|
| 70 | f/3.2 | 5 s | Low | 21 frames | 36 MeV | 15 nA | 20 mm | Beam on. |
|
|
| 71 | f/3.2 | 2 s | N/A | N/A | 36 MeV | 15 nA | 20 mm | Beam on. |
|
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. |
|
|
| 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. |
|
|
| 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. |
|
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. |
|
|
| 76 | f/8 | 1 s | Low | 21 frames | 36 MeV | 100 nA | 20 mm | Beam on. Green film inserted between scintillator stack and sensor. |
|
|
| 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. |
|
|
| 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. |
|
|
| 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. |
|
|
| 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. |
|
|
| 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. |
|
|
| 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. |
|
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. |
|
|
| 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. |
|
|
| 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. |
|
|
| 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. |
|
|
| 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. |
|
|
| 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. |
|
|
| 89 | f/3.2 | 5 s | N/A | N/A | 28 MeV | 10 nA | 20 mm | Beam on. |
|
N/A |
| 90 | f/3.2 | 1 s | Low | 21 frames | 28 MeV | 30 nA | 20 mm | Beam on. |
|
|
| 91 | f/3.2 | 1 s | High | 21 frames | 28 MeV | 30 nA | 20 mm | Beam on. |
|
|
| 92 | f/8 | 1 s | High | 21 frames | 28 MeV | 300 nA | 20 mm | Beam on. |
|
|
| 93 | f/8 | 1 s | High | 21 frames | 28 MeV | 250 nA | 20 mm | Beam on. |
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