Design and optimization of a dedicated Faraday cup for UHDR proton dosimetry: Implementation in a UHDR irradiation station

Lucas Schoenauen; Richard Coos; Julien Colaux; Anne-Catherine Heuskin

doi:10.1016/j.nima.2024.169411

Design and optimization of a dedicated Faraday cup for UHDR proton dosimetry: Implementation in a UHDR irradiation station

Lucas Schoenauen, Richard Coos, Julien Colaux, Anne-Catherine Heuskin (Supervisor)

Research output: Contribution to journal › Article › peer-review

Abstract

We describe in detail an Ultra High Dose Rate (UHDR) setup on a 2 MV tandem accelerator for investigating the FLASH effect in radiotherapy. Addressing UHDR dosimetry challenges, we have developed a specialized Faraday Cup (FC) as a dose rate-independent solution. Utilizing Monte Carlo simulations, the geometry and materials used for the FC's design has been optimized for a 4 MeV proton beam. According to the simulations, the virtual error on the charge collection is negligible. This three-part UHDR setup also integrates a beam profiler to ensure the beam homogeneity and an electrostatic chopper to irradiate for precise short times (down to 10 μs), replicating the macro beam structure of typical clinical proton accelerator structures such as the S2C2 and C230 (IBA, Louvain-la-Neuve). The integrated setup ensures dose deposition with an error ≤ 5% for dose rate from 140 to 1000 Gy/s.

Original language	English
Article number	169411
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	1064
Issue number	169411
DOIs	https://doi.org/10.1016/j.nima.2024.169411
Publication status	Published - Jul 2024

Keywords

Radiotherapy (RT)
Proton flash
Faraday Cup

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.nima.2024.169411

Cite this

Schoenauen, L., Coos, R., Colaux, J., & Heuskin, A.-C. (2024). Design and optimization of a dedicated Faraday cup for UHDR proton dosimetry: Implementation in a UHDR irradiation station. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1064(169411), Article 169411. https://doi.org/10.1016/j.nima.2024.169411

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title = "Design and optimization of a dedicated Faraday cup for UHDR proton dosimetry: Implementation in a UHDR irradiation station",

abstract = "We describe in detail an Ultra High Dose Rate (UHDR) setup on a 2 MV tandem accelerator for investigating the FLASH effect in radiotherapy. Addressing UHDR dosimetry challenges, we have developed a specialized Faraday Cup (FC) as a dose rate-independent solution. Utilizing Monte Carlo simulations, the geometry and materials used for the FC's design has been optimized for a 4 MeV proton beam. According to the simulations, the virtual error on the charge collection is negligible. This three-part UHDR setup also integrates a beam profiler to ensure the beam homogeneity and an electrostatic chopper to irradiate for precise short times (down to 10 μs), replicating the macro beam structure of typical clinical proton accelerator structures such as the S2C2 and C230 (IBA, Louvain-la-Neuve). The integrated setup ensures dose deposition with an error ≤ 5% for dose rate from 140 to 1000 Gy/s.",

keywords = "Radiotherapy (RT), Proton flash, Faraday Cup",

author = "Lucas Schoenauen and Richard Coos and Julien Colaux and Anne-Catherine Heuskin",

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year = "2024",

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doi = "10.1016/j.nima.2024.169411",

language = "English",

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Schoenauen, L , Coos, R , Colaux, J & Heuskin, A-C 2024, 'Design and optimization of a dedicated Faraday cup for UHDR proton dosimetry: Implementation in a UHDR irradiation station', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 1064, no. 169411, 169411. https://doi.org/10.1016/j.nima.2024.169411

Design and optimization of a dedicated Faraday cup for UHDR proton dosimetry: Implementation in a UHDR irradiation station. / Schoenauen, Lucas ; Coos, Richard ; Colaux, Julien et al.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 1064, No. 169411, 169411, 07.2024.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Design and optimization of a dedicated Faraday cup for UHDR proton dosimetry: Implementation in a UHDR irradiation station

AU - Schoenauen, Lucas

AU - Coos, Richard

AU - Colaux, Julien

A2 - Heuskin, Anne-Catherine

PY - 2024/7

Y1 - 2024/7

N2 - We describe in detail an Ultra High Dose Rate (UHDR) setup on a 2 MV tandem accelerator for investigating the FLASH effect in radiotherapy. Addressing UHDR dosimetry challenges, we have developed a specialized Faraday Cup (FC) as a dose rate-independent solution. Utilizing Monte Carlo simulations, the geometry and materials used for the FC's design has been optimized for a 4 MeV proton beam. According to the simulations, the virtual error on the charge collection is negligible. This three-part UHDR setup also integrates a beam profiler to ensure the beam homogeneity and an electrostatic chopper to irradiate for precise short times (down to 10 μs), replicating the macro beam structure of typical clinical proton accelerator structures such as the S2C2 and C230 (IBA, Louvain-la-Neuve). The integrated setup ensures dose deposition with an error ≤ 5% for dose rate from 140 to 1000 Gy/s.

AB - We describe in detail an Ultra High Dose Rate (UHDR) setup on a 2 MV tandem accelerator for investigating the FLASH effect in radiotherapy. Addressing UHDR dosimetry challenges, we have developed a specialized Faraday Cup (FC) as a dose rate-independent solution. Utilizing Monte Carlo simulations, the geometry and materials used for the FC's design has been optimized for a 4 MeV proton beam. According to the simulations, the virtual error on the charge collection is negligible. This three-part UHDR setup also integrates a beam profiler to ensure the beam homogeneity and an electrostatic chopper to irradiate for precise short times (down to 10 μs), replicating the macro beam structure of typical clinical proton accelerator structures such as the S2C2 and C230 (IBA, Louvain-la-Neuve). The integrated setup ensures dose deposition with an error ≤ 5% for dose rate from 140 to 1000 Gy/s.

KW - Radiotherapy (RT)

KW - Proton flash

KW - Faraday Cup

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U2 - 10.1016/j.nima.2024.169411

DO - 10.1016/j.nima.2024.169411

M3 - Article

SN - 0168-9002

VL - 1064

JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

IS - 169411

M1 - 169411

ER -

Design and optimization of a dedicated Faraday cup for UHDR proton dosimetry: Implementation in a UHDR irradiation station

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Design and optimization of a dedicated Faraday cup for UHDR proton dosimetry: Implementation in a UHDR irradiation station

Abstract

Keywords

UN SDGs

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