VACUUM SIMULATIONS FOR HEAVY ION BEAMS IN THE AGOR CYCLOTRON

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	VACUUM SIMULATIONS FOR HEAVY ION BEAMS IN THE AGOR CYCLOTRON
	A.Sen ; M.J. van Goethem ; M.A.Hofstee ; S. Brandenburg
	2010-09-10
会议日期	2010-09-06
会议地点	兰州
英文摘要	The TRIμP program at the KVI requires the development of high intensity heavy ion beams in particular 206Pb27+ at 8.5 MeV/amu and 20Ne6+ at 23.3 MeV/amu. For the Pb beam, losses in the cyclotron are one of the factors limiting the intensity that can be achieved. Charge changing collisions between the heavy ion beam and the residual gas cause subsequent desorption off the walls of the cyclotron which in turn leads to vacuum degradation. This causes a positive feedback loop leading to a reduced transmission with increasing beam intensity. We have developed a model to track the trajectory of the particles after a charge changing collision and 3D vacuum simulations to predict pressure profiles from desorption values. We have built and tested an experimental setup to measure beam induced desorption for relevant materials. Preliminary results are described.
会议录	The 19th International Conference on Cyclotrons and their Applications, CYCLOTRONS'31
资助机构	IMP;Chinese Academy of Sciences
语种	英语
URL标识	查看原文
内容类型	会议论文
源URL	[http://ir.imp.cas.cn/handle/113462/8561]
专题	近代物理研究所_近代物理研究所知识存储（2010之前）
推荐引用方式 GB/T 7714	A.Sen,M.J. van Goethem,M.A.Hofstee,et al. VACUUM SIMULATIONS FOR HEAVY ION BEAMS IN THE AGOR CYCLOTRON[C]. 见:. 兰州. 2010-09-06.