Development and Commissioning of the Beam Diagnostics for CIAE Proton Therapy Beamline System

IF 1.9 3区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Nuclear Science Pub Date : 2024-10-23 DOI:10.1109/TNS.2024.3485053

Yang Wang;Zhiguo Yin;Tianjue Zhang;Bohan Zhao;Chuan Wang;Tianyi Jiang;Qiankun Guo;Chuanye Liu;Peng Zhu

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引用次数: 0

Abstract

A superconducting cyclotron-based proton therapy (PT) system, featuring a high dose rate, fast energy varying, compact size, and low energy consumption, is developed at the China Institute of Atomic Energy (CIAE). From the cyclotron to the nozzle, the beamline is equipped with 51 magnets, including six 30°, one 60°, and two 75° dipoles. Its strict symmetry ensures better beam optics, such as achromatic aberration for a wide energy range beam. The beam diagnostics system has been developed in-house to meet the beam commissioning needs of those high-quality beamlines. Along the beamline, the system includes: 1) seven standardized comprehensive diagnostic units (a combination of Faraday cup, dual-wire scanner, and optical beam profile monitor); 2) four pairs of X-Y slits for energy selection and emittance redefinition; and 3) several separate circular collimators, fast beam cutoff devices, and online monitoring ionization chambers for beam position, as well as Faraday cup for measuring beam intensity in the air section for flexible use. In this article, the design of the diagnostic system, the specialized electronics, and the electromagnetic compatibility (EMC) consideration were introduced. The dual-wire structure for the pA-level low-intensity beam was depicted. The cerium-doped yttrium aluminum garnet (Ce: YAG), an essential photonic material used as a yellow phosphor for white light-emitting diodes, with a very low-intensity threshold for proton beam profile measurement, was also presented in detail.

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来源期刊

IEEE Transactions on Nuclear Science 工程技术-工程：电子与电气

CiteScore

3.70

自引率

27.80%

发文量

314

审稿时长

6.2 months

期刊介绍： The IEEE Transactions on Nuclear Science is a publication of the IEEE Nuclear and Plasma Sciences Society. It is viewed as the primary source of technical information in many of the areas it covers. As judged by JCR impact factor, TNS consistently ranks in the top five journals in the category of Nuclear Science & Technology. It has one of the higher immediacy indices, indicating that the information it publishes is viewed as timely, and has a relatively long citation half-life, indicating that the published information also is viewed as valuable for a number of years. The IEEE Transactions on Nuclear Science is published bimonthly. Its scope includes all aspects of the theory and application of nuclear science and engineering. It focuses on instrumentation for the detection and measurement of ionizing radiation; particle accelerators and their controls; nuclear medicine and its application; effects of radiation on materials, components, and systems; reactor instrumentation and controls; and measurement of radiation in space.