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16-19 January 2018
Zurich, Switzerland
Europe/Berlin timezone

Single particle detection for medical applications

17 Jan 2018, 12:20
ETH HG E 1.2 (Zurich, Switzerland)

ETH HG E 1.2

Zurich, Switzerland

Rämistrasse 101, 8092 Zürich, Schweiz


Dr Nicola Minafra (The University of Kansas)


A Low Gain Avalanche Detector (LGAD) was used to characterize a linear accelerator (LINAC) used for radiotherapy at St. Luke Hospital in Dublin. The LINAC, manufactured by ELEKTA, can produce an electron beam with energies between 5 and 15 MeV in pulses of ~2 us with a substructure of 3 GHz. A tungsten target is used to produce up to 10^11 photons/s mm2 X-rays (bremsstrahlung) that are used for the treatment. The X-ray beam is contaminated with electrons produced by interaction with air. We characterized the beam using a fast detector sensitive to single photons and electrons. A permanent magnet was used to study the energy spectrum of the electrons directly produced by the LINAC and produced by the interactions with air, while a set of absorbers were used to simulate interactions in the human body.

Primary author

Dr Nicola Minafra (The University of Kansas)


Prof. Brendan McClean (UCD and St. Lu­­ke's Hospital, Dublin) Prof. Christophe Royon (The University of Kansas) Mr Luke Rock (UCD and Beacon Hospital, Dublin) Ms Naomi Raab (University College Dublin) Prof. Patrick McCavana (St. Lu­­ke's Hospital, Dublin) Prof. Ronan McNulty (University College Dublin) Mr Tommaso Isidori (The University of Kansas)

Presentation Materials