Beam Dynamics Studies of an Accelerating Tube for 6 MeV Electron LINAC

Zarei, Sara; Abbasi, Fereydoon; Ahmadiannamin, Sasan; Ghasemi, Farshad; Lamehi, Mohammad

doi:10.18429/jacow-ipac2017-thpva086

Cited by 2 publications

(2 citation statements)

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“…Beam dynamics studies have been carried out by using ASTRA [7]. The results of studies, simulations and designs are in the references [4,[8][9][10].…”

Section: Jinst 18 T10006mentioning

confidence: 99%

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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“…Beam dynamics studies have been carried out by using ASTRA [7]. The results of studies, simulations and designs are in the references [4,[8][9][10].…”

Section: Jinst 18 T10006mentioning

confidence: 99%

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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“…Designing and manufacturing standing wave cavities is aimed at the development of their employment in a variety of linear accelerators with medical, cargo inspection and radioisotope production applications. Nuclear Science and Technology Research Institute (NSTRI) has begun extensive research in this area [1,2]. After constructing traveling wave linac (IPM e-linac) [3][4][5], the production of smaller and sealed accelerators is a priority for the above mentioned applications.…”

Section: Introductionmentioning

confidence: 99%

Multiphysics analysis of side-coupled RF cavity

Kejani¹,

Ghasemi²,

Davani³

et al. 2019

J. Inst.

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A: By changing the resonant frequency of the cavity due to the power dissipation in its wall, the impedance matching will impair and the power will reflect. The acceptable frequency shift range which is based on the cooling system in the cavity design depends on the ability of the automatic frequency controller system and the bandwidth of the RF amplifier output frequency. This paper describes how to couple electromagnetic, thermal and mechanical analysis and calculates the cavity frequency shift during operation. Multiphysics analysis investigations had done for an S-band side-coupled cavity. By using the Superfish code, the power loss ratio at different surfaces of the cavity could be accurately calculated and Steady-State Thermal (SST) analysis could be performed correctly. In this paper, the report on the simultaneous use of multiphysics analysis with the modules of the Ansys software is presented and the results of both simulations are compared. The temperature distribution of the cavity was obtained by using the Fluent software and its results were compared with the temperature distribution gained from applying the convection coefficient to the SST. Three cooling systems were investigated for different powers with different cross-sections. In this section of the investigation, after thermal analysis, deformed geometry was obtained due to thermal stresses. By electromagnetic analyzing of deformed geometry, its frequency shift was obtained for all different cases. In order to evaluate the simulations, after the construction of a single-cavity, frequency variations are measured in terms of temperature variation and the results are compared with each other. After constructing a single-cavity, frequency shifts based on temperature variations are measured and the results are compared with each other. K: Acceleration cavities and magnets superconducting (high-temperature superconductor; radiation hardened magnets; normal-conducting; permanent magnet devices; wigglers and undulators); Accelerator modelling and simulations (multi-particle dynamics; single-particle dynamics);

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Beam Dynamics Studies of an Accelerating Tube for 6 MeV Electron LINAC

Cited by 2 publications

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

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

Multiphysics analysis of side-coupled RF cavity

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