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Design and research of RF system for 10 MeV compact cyclotron

Design and research of RF system for 10 MeV compact cyclotro...

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第一届中国粒子加速器会议

作者： LI Dong HU TongNing LIU KaiFeng YANG Jun College of Electrical and Electronic Engineering Huazhong University of Science and Technology Department of Electronics and Information Engineering Huazhong University of Science and Technology

A 10 MeV compact cyclotron(CYCHU-10) has been developing in Huazhong University of Science and Technology(HUST). The RF system includes a 10 kW RF power generator and a resonance *** is no automatic frequency tuning equipment ir the cavity due to space limitations,so the generator must search and track the cavity resonant ***9850 synthesizer is used to generate RF signal in the experimental prototype,and a fine sinusoidal waveform around 99 MHz is obtained with the method of picking up a special aliased signal from the synthesizer’s output,and the output power level can be set by regulating the resistor connected to the Pin ’R’.The final stage amplifier based on tetrode operates in the grounded cathode configuration,and the schematic of the tetrode circuit is *** method of searching the resonant frequency is discussed in *** the sake of a compact and robust structure,the resonance cavity will adopt non-uniform characteristic impedance coaxial structure,and the magnet surface electroplated with copper will be used as dummy *** precise shapes and dimensions of the cavity are designed and simulation results are carried out in this *** distributions of electromagnetic field are illustrated by means of numerical calculation analysis,and the wooden model test is preformed as well.

关键词： compact cyclotron RF system AD9850 tetrode resonance cavity

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High performance computation on beam dynamics problems in high intensity compact cyclotrons

High performance computation on beam dynamics problems in hi...

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第一届中国粒子加速器会议

作者： YANG JianJun ZHANG TianJue LIN YuZheng ADELMANN Andreas WANG Feng AN ShiZhong China Institute of Atomic Energy Department of Engineering Physics Tsinghua University Paul Scherrer Institut

This paper presents the research progress in the beam dynamics problems for future high intensity compact cyclotrons by utilizing the state-of-the-art high performance computation technology.A "Start-to-Stop" model,which includes both the interaction of the internal particles of a single bunch and the mutual interaction of neighboring multiple bunches in the radial direction, is established for compact cyclotrons with multi-turn *** model is then implemented in OPAL-CYCL,which is a 3D object-oriented parallel code for large scale particle simulations in *** addition,to meet the running requirement of parallel computation,we have constructed a small scale HPC cluster system and tested its ***,the high intensity beam dynamics problems in the 100 MeV compact cyclotron,which is being constructed at CIAE,are studied using this code and some conclusions are drawn.

关键词： compact cyclotron space charge effects parallel computation beam dynamics cluster system

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