Characterization of a 144-channel front-end board for ion beam counting in particle therapy
A particle counter is being developed by the University and the National Institute for Nuclear Physics of Torino to be used as an online fluence beam monitor in Particle Therapy. The detector exploits thin planar silicon sensors (active thickness of ∼ 50 μ m) segmented in 146 strips with an area of 2 . 6 × 2 . 6 cm 2 to cover the cross section of a pencil beam. The readout electronics relies on a 24-channel ASIC (named ABACUS) optimized to discriminate the signal pulses in a wide charge range (4–150 fC). A front-end board was developed to house six ABACUS chips and was characterized in laboratory to measure pedestals, amplifier gains and noise. The results are compatible with the ABACUS design simulation and a full counting efficiency was found up to 143 MHz for regular pulses at the input of one channel. Moreover, discrimination thresholds were optimized to achieve a uniform channel-by-channel counting efficiency as required to guarantee clinical performance with proton and carbon ion beams.
Authors
- M. Abujami (ORCID: https://orcid.org/0000-0001-6228-7738)
- V. Ferrero
- Emanuele Data (ORCID: https://orcid.org/0009-0002-1351-1523)
- S. Giordanengo (ORCID: https://orcid.org/0000-0001-6347-1182)
- A. Vignati (ORCID: https://orcid.org/0000-0001-8137-9080)
- F. Pennazio (ORCID: https://orcid.org/0000-0001-8323-0132)
- Elisabetta Medina (ORCID: https://orcid.org/0000-0003-3127-8577)
- Félix Más Milián (ORCID: https://orcid.org/0000-0002-5588-1672)
- S. Garbolino (ORCID: https://orcid.org/0000-0001-5604-1395)
- M. Fadavi Mazinani
- Diango Montalvan Olivares (ORCID: https://orcid.org/0000-0002-3733-2899)
- E. Fiorina
- Cosimo Galeone
- R. Cirio (ORCID: https://orcid.org/0000-0001-9669-848X)
- R. Sacchi (ORCID: https://orcid.org/0000-0001-7794-0170)
- Arianna Ferro (ORCID: https://orcid.org/0000-0002-1450-7035)
- U. Deut
- F. Mostardi
- Richard Wheadon
- Seyed Faramarz Ranjbar
Institutions
- GSI Helmholtz Centre for Heavy Ion Research (DE)
- Universidade Estadual de Santa Cruz (BR)
- Istituto Nazionale di Fisica Nucleare, Sezione di Torino (IT)
- University of Turin (IT)
Publication Details
- Journal
- Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment
- Published
- 2025-06-13
- DOI
- https://doi.org/10.1016/j.nima.2025.170712
- Citations
- 1
- Primary Topic
- Radiation Therapy and Dosimetry
- Type
- article
- Field-Weighted Citation Impact
- 1.52
Funders
- Compagnia di San Paolo
- Instituto Nazionale di Fisica Nucleare