Dual beam-current transformer design for monitoring and reporting of electron ultra-high dose rate (FLASH) beam parameters.
Dual beam-current transformer design for monitoring and reporting of electron ultra-high dose rate (FLASH) beam parameters.
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双梁电流变压器设计，用于监视和报告电子超高剂量速率（闪光）梁参数。
DOI：
10.1002/acm2.13891
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发表时间：
2023-02
影响因子：
2.1
通讯作者：
Schueler, Emil
中科院分区：
文献类型：
--
作者：
Liu, Kevin;Palmiero, Allison;Chopra, Nitish;Velasquez, Brett;Li, Ziyi;Beddar, Sam;Schueler, Emil
旨在研究双束流Transformer（BCT）设计的有用性和有效性，以监测和记录真实的时间脉冲电子闪光（eFLASH）束的束剂量测定输出和能量，并告知该设计对未来eFLASH束控制的有用性。两个BCT集成到FLASH Mobetron系统的头部，一个位于初级散射箔之后，另一个位于次级散射箔的下游。单独评价BCT的响应，以监测作为剂量、散射条件和捕获物理射束参数（如脉冲宽度（PW）、脉冲重复频率（PRF）和每脉冲剂量（DPP））的函数的射束输出，并结合使用下BCT信号与上BCT信号的比值确定射束能量。在Gafchromic胶片上测量的吸收剂量与BCT信号之间观察到了线性关系（R2> 0.99）。在BCT信号中也观察到线性关系，其作为递送的脉冲数的函数，而与PW、DPP或PRF无关（R2> 0.99）。由于二次散射箔引起的差分光束衰减，发现BCT下限与上限之比与eFLASH光束的能量密切相关。BCT还能够为真实的实时输送的每个脉冲提供关于PW、PRF、能量和DPP的准确信息。FLASH Mobetron中集成的双BCT系统被证明是一种可靠的监测系统，能够量化加速器性能并逐脉冲捕获所有重要的物理束流参数，两个BCT之间的比率与束流能量密切相关。快速的信号读出和处理使得BCT能够提供关于光束输出和能量的真实的实时信息，并且被提议作为适合于精确的光束监测和eFLASH光束控制的系统。
To investigate the usefulness and effectiveness of a dual beam‐current transformer (BCTs) design to monitor and record the beam dosimetry output and energy of pulsed electron FLASH (eFLASH) beams in real‐time, and to inform on the usefulness of this design for future eFLASH beam control. Two BCTs are integrated into the head of a FLASH Mobetron system, one located after the primary scattering foil and the other downstream of the secondary scattering foil. The response of the BCTs was evaluated individually to monitor beam output as a function of dose, scattering conditions, and ability to capture physical beam parameters such as pulse width (PW), pulse repetition frequency (PRF), and dose per pulse (DPP), and in combination to determine beam energy using the ratio of the lower‐to‐upper BCT signal. A linear relationship was observed between the absorbed dose measured on Gafchromic film and the BCT signals for both the upper and lower BCT (R 2 > 0.99). A linear relationship was also observed in the BCT signals as a function of the number of pulses delivered regardless of the PW, DPP, or PRF (R 2 > 0.99). The lower‐to‐upper BCT ratio was found to correlate strongly with the energy of the eFLASH beam due to differential beam attenuation caused by the secondary scattering foil. The BCTs were also able to provide accurate information about the PW, PRF, energy, and DPP for each individual pulse delivered in real‐time. The dual BCT system integrated within the FLASH Mobetron was shown to be a reliable monitoring system able to quantify accelerator performance and capture all essential physical beam parameters on a pulse‐by‐pulse basis, and the ratio between the two BCTs was strongly correlated with beam energy. The fast signal readout and processing enables the BCTs to provide real‐time information on beam output and energy and is proposed as a system suitable for accurate beam monitoring and control of eFLASH beams.
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影响因子：
6.2
作者：
Delaney, G;Jacob, S;Barton, M
通讯作者：
Barton, M
DOI：
10.1109/tim.2008.2006134
发表时间：
2009-06-01
影响因子：
5.6
作者：
Kondrath, Nisha;Kazimierczuk, Marian K.
通讯作者：
Kazimierczuk, Marian K.
影响因子：
3.8
作者：
Romano, Francesco;Bailat, Claude;Jorge, Patrik Goncalves;Lerch, Michael Lloyd Franz;Darafsheh, Arash
通讯作者：
Darafsheh, Arash
影响因子：
3.8
作者：
通讯作者：
--
影响因子：
3.8
作者：
Moeckli, Raphael;Jorge, Patrik Goncalves;Bailat, Claude
通讯作者：
Bailat, Claude