Login / Signup

Performance of a low gain avalanche detector in a medical linac and characterisation of the beam profile.

T IsidoriP McCavanaB McCleanR McNultyN MinafraN RaabL RockC Royon
Published in: Physics in medicine and biology (2021)
Low gain avalanche detectors can measure charged particle fluences with high speed and spatial precision, and are a promising technology for radiation monitoring and dosimetry. A detector has been tested in a medical linac where single particles were observed with a time resolution of 50 ps. The integrated response is similar to a standard ionising chamber but with a spatial precision twenty times finer, and a temporal precision over 100 million times better, with the capability to measure the charge deposited by a single linac pulse. The unprecedented resolving power allows the structure of the ∼3 μs linac pulses to be viewed and the 350 ps sub-pulses in the train to be observed.
Keyphrases
  • high speed
  • atomic force microscopy
  • healthcare
  • monte carlo
  • blood pressure
  • high resolution
  • magnetic resonance imaging
  • computed tomography
  • magnetic resonance
  • mass spectrometry