Parameter Optimization of Hole-Slot-Type Magnetron for Controlling Resonant Frequency of Linear Accelerator 6 MeV by Reverse Engineering Technique

Yachum, Nattawat; Chunjarean, S.; Russamee, Nilaped; Srisertpol, Jiraphon

doi:10.3390/app11052384

Cited by 2 publications

(1 citation statement)

References 18 publications

(23 reference statements)

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“…The side-coupled structure allows for a compact design and high acceleration efficiency per unit length. This leads to choosing a magnetron to supply pulsed RF feeding through the LINAC, controlled by an Automatic Frequency Control (AFC) system [6]. By coupling the accelerating or main cells to the beam axis through coupling cells, the electron can effectively be accelerated up to a desired energy of 6 MeV with a peak beam current of 180 mA at /2 mode.…”

Section: Design Of Linac For Fruit Irradiationmentioning

confidence: 99%

Synchronisation of linear accelerator for fruit irradiation with FPGA-based system

Kokkrathoke,

Yachum,

Chunjarean

et al. 2023

J. Phys.: Conf. Ser.

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Linear accelerator (LINAC) has been broadly used in various applications in recent years. For instance, the LINAC can produce X-rays and high-energy electrons, which are utilised in radiation therapy for medical purposes and also applied to fruit steriliser for exportation. At present, the prototype of the 6 MeV LINAC for fruit irradiation by using a magnetron radio frequency (RF) source has been developed at Synchrotron Light Research Institute (SLRI) in Nakhon Ratchasima, Thailand. The LINAC consists of several key sub-systems such as pulsed modulators both for electron gun and magnetron used to power the LINAC, magnetic guidance and beam diagnostic systems. All these have been integrated and worked in proper function to reach a proper and stable RF acceleration. Therefore, a timing system is required with well synchronisation for precise transfer of the clock and reference trigs to each sub-system. Furthermore, the low-cost in-house synchronous equipment has been built here for domestic researchers when they would like to apply this system to their work in the future; consequently, the FPGA-based system for real-time synchronisation has been created to achieve the sequences of the LINAC timing system. In this design, the Zybo Z7 development board from the Xilinx Zynq-7000 family is chosen, which integrates the programmable logic (PL) and processing system (PS) in the same chip. The experimental results are presented by the LINAC operation with synchronisation between a precise time and various delay times on both pulsed modulators, which the synchronous technique with accurate time demonstrates excellent performances leading to stable X-ray radiation for fruit irradiation with synchronous operation between the electron gun and magnetron.

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Section: Design Of Linac For Fruit Irradiationmentioning

confidence: 99%

Synchronisation of linear accelerator for fruit irradiation with FPGA-based system

Kokkrathoke,

Yachum,

Chunjarean

et al. 2023

J. Phys.: Conf. Ser.

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Optimizing Ultra-High Vacuum Control in Electron Storage Rings Using Fuzzy Control and Estimation of Pumping Speed by Neural Networks with Molflow+

Seangsri

Wanglomklang

Khaewnak

et al. 2023

Systems

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This paper presents the design of a fuzzy-controller-based ultra-high vacuum pressure control system and its performance evaluation for a sputter-ion vacuum pump used in the electron storage ring at the Synchrotron Light Research Institute (Public Organization) in Thailand. The production of synchrotron light requires advanced vacuum technology to maintain stability and prevent interference of electrons in an ultra-high vacuum pressure environment of about 10−9 Torr. The presence of heat and gas rupture from the pipe wall can affect the quality of the light in that area. The institute currently uses a sputter-ion vacuum pump which is costly and requires significant effort to quickly reduce pressure increases in the area. Maintaining stable vacuum pressure throughout electron motion is essential in order to ensure the quality of the light. This research demonstrates a procedure for evaluating the performance of a sputter-ion vacuum pump using a mathematical model generated by a neural network and Molflow+ software. The model is used to estimate the pumping speed of the vacuum pump and to design a fuzzy control system for the ultra-high vacuum system. The study also includes a leakage rate check for the vacuum system.

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Parameter Optimization of Hole-Slot-Type Magnetron for Controlling Resonant Frequency of Linear Accelerator 6 MeV by Reverse Engineering Technique

Cited by 2 publications

References 18 publications

Synchronisation of linear accelerator for fruit irradiation with FPGA-based system

Synchronisation of linear accelerator for fruit irradiation with FPGA-based system

Optimizing Ultra-High Vacuum Control in Electron Storage Rings Using Fuzzy Control and Estimation of Pumping Speed by Neural Networks with Molflow+

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