Measurement of Characteristic of X-band RF Cavity for 6 MeV Electron Linac

Shin, Seungwook; Lee, Seung–Hyun; Oh, Se‐Young; Ha, Donghyup; Ghergherehchi, Mitra; Chai, Jong‐Seo; Lee, Byung-no; Chae, Min-Kyun

doi:10.3938/jkps.72.818

Cited by 3 publications

(2 citation statements)

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“…The bead-pull measurement system measures the amplitude changes of the electric field inside the tube in the operating frequency while a bead moves on the tube axis [1,18]. A small bead is moved through the tube by a thread attached to a stepper motor.…”

Section: Jinst 18 T10006mentioning

confidence: 99%

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

Zarei,

Ghasemi,

Sanaye Hajari

et al. 2023

J. Inst.

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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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Section: Jinst 18 T10006mentioning

confidence: 99%

“…The higher the frequency band used, the shorter the wavelength, which minimizes the size of the electron linac, as well as the size of the RF Source. But at higher frequencies, the construction and adjustment of the accelerators become more difficult and complex [1].…”

Section: Introductionmentioning

confidence: 99%