Operation of a magnetically filtered multicusp volume source

Ralph R. Stevens, R. L. York, K. N. Leung, K. W. Ehlers
1987 AIP Conference Proceedings  
DISCLAIMER Thim rcyrrwt was prcpcml M an wxrum of~rwh nprmmwodby m ngcncy of the [Jnikd !hmIa (kwcrnnwnt. Neither the I Mcil Smu (kwcrnrncnt mw wry ngcrwy Itmrd, rhw~ny Irf their cmphp, m-hem wry wwrmtty, cqwun w implied, m ccsumcz any kgcl liability IM n qwwmi. hilily fwr Ihc cccurncy, LmrydoIcrMt, wr udultwm IM mry inhwmnlirwr, appcrams, pmwlucI, w pmrcm rlisckd, IW rqwr~cnm Ihnl its UM wnutd JWrtirfringc privumly owned rights. Rcrcr. mrvc hcrcm III xny~pirii w)mmcrcird IWAIUI, pwccnm, IW
more » ... IUI, pwccnm, IW ccrvicc hy Irdc nnmc, Irwkmnrh. mnnuracrurcr, w olhcrwiu cltm not rmwscrily rmmlilutc or imply its cnrlorccmcnl, recrrm. nrcmlnliotr, or rworhrg hy Ihr [ Initd SIHICn fkrvcrnmcnl or nny ngcncy Ikrd. "Ilm views nrtrl opmitww of ntilhorn cqwcucd herein do nwi nc.wwrily SMIC {w rcl'ld Ihucc d Ihc I Inilai SlalCn (iovcrnmcnl r.rrq ny cgcncy tkfd.~~~h~~~k sAlamos,NewMexico8754# Los Alamos National Laborator MM hfJ NMu d o? Mr #4#4sfol ABSTRACT The results of experimental studies on an optimized version of the Lawrence Berkeley Laboratory (LBL) volume source are presented. Negative ion yields and emittance data were obtained for operation with both H-and D-beams. At high arc power, H-beam currents up to 10mA with rms normalized emittances of O.0080n q cm" mrad were obtained from a 6.3-mmdiam emission aperture, The yiekls of D-beams were approximately half those of H-beams, and the normalized emittances were 1.7 times smaller at the same current density. The results of these studies indicate that the present operation is limited by the extraction system rather than the ion source. 'Work performed under the auspices of theU.S.Dept. of Energyand supportedby the U,S, Army StrategicDefenseCommand.
doi:10.1063/1.36540 fatcat:onx7wagzhja7jjmj5srxh4o5hm