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TY - CONF AU - Dudnikov, V.G. AU - Dudnikov, A.V. AU - Morozov, V.S. ED - Henderson, Stuart ED - Akers, Evelyn ED - Satogata, Todd ED - Schaa, Volker R.W. TI - High Intensity Source of He Negative Ions J2 - Proc. of IPAC2015, Richmond, VA, USA, May 3-8, 2015 C1 - Richmond, VA, USA T2 - International Particle Accelerator Conference T3 - 6 LA - english AB - He- ion can be formed by an attachment of additional electron to the excited metastable 23S1 He atom. Electron affinity in this metastable He- ion is A=0.08 eV with excitation energy 19.8 eV. Production of He- ions is difficult because the formation probability is very small but destruction probability is very high. Efficiency of He- ions generation was improved by using of an alkali vapor targets for charge exchange He- sources. Low current He- beams were used in tandem accelerators for research and technological diagnostics (Rutherford scattering). The development of high-intensity high-brightness arc-discharge ion sources at the Budker Institute of Nuclear Physics (BINP) has opened up an opportunity for efficient production of more intense and more brighter He- beam which can be used for alpha particles diagnostics in a fusion plasma and for realization of a new type of a polarized 3He− ion source. This report discusses the high intense He- beams production and a polarized 3He− ion source based on the large difference of extra-electron auto-detachment lifetimes of the different 3He− ion hyperfine states. PB - JACoW CP - Geneva, Switzerland SP - 4057 EP - 4059 KW - ion KW - ion-source KW - target KW - polarization KW - electron DA - 2015/06 PY - 2015 SN - 978-3-95450-168-7 DO - 10.18429/JACoW-IPAC2015-THPF142 UR - http://jacow.org/ipac2015/papers/thpf142.pdf ER -