Recent negative ion source activity at JYFL
Recent negative ion source activity at JYFL
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JYFL近期负离子源活动
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
M. Dehnel
中科院分区：
文献类型：
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作者：
T. Kalvas;O. Tarvainen;J. Komppula;M. Laitinen;T. Sajavaara;H. Koivisto;A. Jokinen;M. Dehnel
为Jyveskyla Pelletron加速器研制了一种用于产生H-−的灯丝供电的多点离子源，用于离子束曝光和粒子诱导X射线发射。源可以被认为是传统的，除了滤波场是用电磁铁产生的，以便连续可调。在拉杆电极中集成了一个永久磁偶极反偶极电子转储。该光源通过2 mm口径提供能量为10keV、归一化均方根发射率为95%、发射率为0.019 mm的50μA-H−束流。如果应用需要，可以通过将等离子体电极插入到更小的孔径来实现更低的发射率。在Jyveskyla加速器实验室安装了一台新的商用MCC30/15回旋加速器，提供30 MeV的H+和15 MeV的D+，用于核物理实验和应用。与回旋加速器一起交付的离子源是一个灯丝供电的多点源，能够在1 mA H−输出下连续工作约130h.
A filament-powered multicusp ion source for production of H− has been developed for the Jyvaskyla Pelletron accelerator for use in ion beam lithography and particle induced X-ray emission applications. The source can be considered conventional with the exception of the filter field being created with an electric magnet for continuous adjustability. A permanent magnet dipoleantidipole electron dump is integrated in the puller electrode. The source provides 50 μA H− beam at 10 keV energy with 0.019 mm mrad 95 % normalized rms emittance through a 2 mm aperture. Lower emittance is achievable by changing the plasma electrode insert to a smaller aperture one if application requires. A new commercial MCC30/15 cyclotron has been installed at the Jyvaskyla accelerator laboratory providing 30MeV H+ and 15Mev D+ for use in nuclear physics experiments and applications. The ion source delivered with the cyclotron is a a filament-powered multicusp source capable of about 130 h continuous operation at 1 mA H− output bet...