Proton Calorimetry/Experimental Runs/2018/Mar23

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Beam tests of the UCL single module at medAustron.

Friday 23rd - Saturday 24th of March 2018

Pre-data Taking Information and Notes

  • The tests were carried out with an energy of 252.7 MeV with a 5 second beam spill and a range of intensities.
  • No collimators were used at any point.
  • The setup consisted of:
    • 2" Hamamatsu R13089-100-11 PMT with negative HV active divider base (made by Hamamatsu)
    • coupled with Eljen optical gel to a
    • 3 cm x 3 cm x 45 cm cuboid ENVINET standard scintillator wrapped in two layers 6 um (each) of Mylar
  • The "pensioner" 5 dynode stage PMT was also briefly tested, but no sensible data was able to be acquired.
  • The digitiser always operated in Self Trigger mode.
  • Working directory where digitiser data is stored:

C:\Users\abf\Desktop\digitiser_data\medAustron\mar18\ham

Data Taking

Run number High Voltage, V PMT Current, uA Beam Intensity Rate (Measured on Digitiser) Digitiser Settings
N/A -900 150.1 (beam off) N/A DC Offset: 0, Rec. Length: 396 ns, Threshold: 40 LSB, Gate Offset: 1 ns, Long Gate: 396 ns, BL Mean: 8 ns, Charge. Sensitivty: 20 fC/LSB, Pre-trigger: 9 ns N/A N/A N/A Beam off, lid open. Focus check for DSLR. Low light.
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