M. Sasao, M. Nishiura, S. Guharay, T. Kuroda, M. Hamabe, H. Ramos
{"title":"多源氦离子束的特性及其输运研究","authors":"M. Sasao, M. Nishiura, S. Guharay, T. Kuroda, M. Hamabe, H. Ramos","doi":"10.1109/PAC.1999.795530","DOIUrl":null,"url":null,"abstract":"A test stand with a multicusp type He/sup +/ ion source and an electrostatic transport system was built for the study of beam characteristics at relatively low energy, E<10 keV, and beam transport in a space-charge dominated region with /spl beta/(=v/c)<0.0025. The measured normalized beam emittance (90%) of the He/sup +/ beam extracted from a compact multicusp source is about 0.08 /spl pi/ mm-mrad for the emission current density of about 5-15 mA/cm/sup 2/ at 6-9 kV. An electrostatic quadrupole transport system (ESQ) is designed for this beam. Preliminary experimental results show that the ESQ has a potential to transport a beam without any significant emittance growth over a length of about 50 cm.","PeriodicalId":20453,"journal":{"name":"Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366)","volume":"117 1","pages":"1306-1308 vol.2"},"PeriodicalIF":0.0000,"publicationDate":"2013-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Characteristics of helium ion beams from multicusp source and study of beam transport\",\"authors\":\"M. Sasao, M. Nishiura, S. Guharay, T. Kuroda, M. Hamabe, H. Ramos\",\"doi\":\"10.1109/PAC.1999.795530\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A test stand with a multicusp type He/sup +/ ion source and an electrostatic transport system was built for the study of beam characteristics at relatively low energy, E<10 keV, and beam transport in a space-charge dominated region with /spl beta/(=v/c)<0.0025. The measured normalized beam emittance (90%) of the He/sup +/ beam extracted from a compact multicusp source is about 0.08 /spl pi/ mm-mrad for the emission current density of about 5-15 mA/cm/sup 2/ at 6-9 kV. An electrostatic quadrupole transport system (ESQ) is designed for this beam. Preliminary experimental results show that the ESQ has a potential to transport a beam without any significant emittance growth over a length of about 50 cm.\",\"PeriodicalId\":20453,\"journal\":{\"name\":\"Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366)\",\"volume\":\"117 1\",\"pages\":\"1306-1308 vol.2\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2013-02-20\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/PAC.1999.795530\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PAC.1999.795530","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Characteristics of helium ion beams from multicusp source and study of beam transport
A test stand with a multicusp type He/sup +/ ion source and an electrostatic transport system was built for the study of beam characteristics at relatively low energy, E<10 keV, and beam transport in a space-charge dominated region with /spl beta/(=v/c)<0.0025. The measured normalized beam emittance (90%) of the He/sup +/ beam extracted from a compact multicusp source is about 0.08 /spl pi/ mm-mrad for the emission current density of about 5-15 mA/cm/sup 2/ at 6-9 kV. An electrostatic quadrupole transport system (ESQ) is designed for this beam. Preliminary experimental results show that the ESQ has a potential to transport a beam without any significant emittance growth over a length of about 50 cm.
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