Construction and measurement of the prototype side-coupled standing-wave tube for electron Linac

IF 1.3 4区工程技术 Q3 INSTRUMENTS & INSTRUMENTATION

Journal of Instrumentation Pub Date : 2023-10-01 DOI:10.1088/1748-0221/18/10/t10006

Sara Zarei, Farshad Ghasemi, Shahin Sanaye Hajari, Mahdi Aghayan, Mahyar Shirshekan, Oveis Hasanpour, Fereydoun Abbasi Davani, Mohammad Lamehi Rachti

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引用次数: 0

Abstract

Abstract Due to Iran's growing need for accelerators in various applications, NSTRI (Nuclear Science and Technology Research Institute) has defined a 6 MeV e-Linac (electron linear accelerator) project for medical and inspection applications. This electron accelerator has a side-coupled standing wave tube that operates in π/2 mode at the frequency of 2998.5 MHz. This paper presents a summary of the construction and cold test stage of the prototype tube for this accelerator. The prototype tube was constructed from aluminum and clamped with bolts.In the cold test stage, low-power RF measurements werecarried out using a side-coupled cavity tuning method and a bead-pull measurement technique. Using a network analyzer, magnetic and electric probes, and a mechanical structure constructed for this tube made the RF tuning possible. After tuning, the resonant frequency, unloaded quality factor, and effective shunt impedance of the aluminum tube were achieved at 2998.57 MHz, 7970, and 83.25 MΩ/m respectively.

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电子直线加速器侧耦合驻波管原型的构造与测量

由于伊朗在各种应用中对加速器的需求日益增长，NSTRI(核科学与技术研究所)已经定义了一个6 MeV电子直线加速器(电子直线加速器)项目，用于医疗和检查应用。该电子加速器具有侧耦合驻波管，工作在π/2模式下，频率为2998.5 MHz。本文介绍了该加速器原型管的结构和冷试验阶段的概况。原型管由铝制成，用螺栓固定。在冷测试阶段，采用侧耦合腔调谐方法和头拉测量技术进行了低功率射频测量。使用网络分析仪，磁性和电探针，以及为该管构建的机械结构，使射频调谐成为可能。调谐后，铝管的谐振频率为2998.57 MHz，空载品质因数为7970，有效分流阻抗为83.25 MΩ/m。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Instrumentation 工程技术-仪器仪表

CiteScore

2.40

自引率

15.40%

发文量

827

审稿时长

7.5 months

期刊介绍： Journal of Instrumentation (JINST) covers major areas related to concepts and instrumentation in detector physics, accelerator science and associated experimental methods and techniques, theory, modelling and simulations. The main subject areas include. -Accelerators: concepts, modelling, simulations and sources- Instrumentation and hardware for accelerators: particles, synchrotron radiation, neutrons- Detector physics: concepts, processes, methods, modelling and simulations- Detectors, apparatus and methods for particle, astroparticle, nuclear, atomic, and molecular physics- Instrumentation and methods for plasma research- Methods and apparatus for astronomy and astrophysics- Detectors, methods and apparatus for biomedical applications, life sciences and material research- Instrumentation and techniques for medical imaging, diagnostics and therapy- Instrumentation and techniques for dosimetry, monitoring and radiation damage- Detectors, instrumentation and methods for non-destructive tests (NDT)- Detector readout concepts, electronics and data acquisition methods- Algorithms, software and data reduction methods- Materials and associated technologies, etc.- Engineering and technical issues. JINST also includes a section dedicated to technical reports and instrumentation theses.