ION EXTRACTION SYSTEMS - OPTICS AND DESIGN

被引：18
作者：
KELLER, R
机构：
[1] AFRD, Lawrence Berkeley Laboratory, Berkeley, CA 94720
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1990年 / 298卷 / 1-3期
关键词：
D O I：
10.1016/0168-9002(90)90622-D
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The ion beam formation process and extraction systems are treated in this paper from a rather practical standpoint, with emphasis on, but not strict limitation to, the case of high-current beams extracted from plasma ion sources. Some basic principles of ion extraction optics are discussed and beam quality parameter definitions outlined. Based on the characteristics of an actual extraction system, a general scaling model is then derived for a wide range of beam current and energy values. It allows a determination of the main parameters of systems to be built under specific constraints, or a judgment of the performance of an existing system in terms of one figure of merit. Finally, some examples of special-purpose systems are presented, including multi-aperture, slit, and compound systems. The detailed mechanical contours of these systems are shown to scale in all cases. © 1990.
引用
收藏
页码：247 / 254
页数：8
相关论文
共 17 条
[1]  
ALLISON P, 1981, LA8808MS LOS AL NAT
[2]  
BERKNER KH, 1977, P WORKSHOP PLASMA HE
[3]   TRANSPORT AND ACCELERATION OF HIGH-CURRENT URANIUM ION-BEAMS [J].
BROWN, IG ;
GALVIN, JE ;
KELLER, R ;
SPADTKE, P ;
MULLER, RW ;
BOLLE, J .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1986, 245 (2-3) :217-222
[4]   HIGH-CURRENT ION-SOURCE [J].
BROWN, IG ;
GAVIN, JE ;
MACGILL, RA .
APPLIED PHYSICS LETTERS, 1985, 47 (04) :358-360
[5]   Discharge from hot CaO. [J].
Child, CD .
PHYSICAL REVIEW, 1911, 32 (05) :0492-0511
[6]  
COOPER WS, 1974, 2ND P S ION SOURC FO
[7]   STUDY OF ION-BEAM INTENSITY AND DIVERGENCE OBTAINED FROM A SINGLE APERTURE 3 ELECTRODE EXTRACTION SYSTEM [J].
COUPLAND, JR ;
GREEN, TS ;
HAMMOND, DP ;
RIVIERE, AC .
REVIEW OF SCIENTIFIC INSTRUMENTS, 1973, 44 (09) :1258-1270
[8]  
Keller R., 1986, 1986 Linear Accelerator Conference Proceedings (SLAC-303), P232
[9]   CORDIS - AN IMPROVED HIGH-CURRENT ION-SOURCE FOR GASES [J].
KELLER, R ;
NOHMAYER, F ;
SPADTKE, P ;
SCHONENBERG, MH .
VACUUM, 1984, 34 (1-2) :31-35
[10]  
Keller R., 1983, SPRINGER SER ELECTRO, V11, P69
12