Proton Calorimetry/Experimental Runs/2018/Mar8-9: Difference between revisions
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* To calculate the actual dose delivered to the scintillator: | * To calculate the actual dose delivered to the scintillator: | ||
** / 160 -> to convert to proton current | ** / 160 -> to convert to proton current | ||
** / (50/ collimator diameter)^2 | ** / (50/ collimator diameter)^2 -> to account for reduction in area due to the collimator | ||
Revision as of 11:58, 12 March 2018
Beam tests of the UCL plastic scintillator range calorimeter.
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.
- The average background value per pixel for the sensor is ~ 2500. The sensor pixel dimensions are 1030 x 1536.
- 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
- 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