Performance of a high current H- radio frequency volume ion source

被引：13

作者：

Saadatmand, K ^{[1
]}

Arbique, G ^{[1
]}

Hebert, J ^{[1
]}

Valicenti, R ^{[1
]}

Leung, KN ^{[1
]}

机构：

[1] UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1996年 / 67卷 / 03期

关键词：

D O I：

10.1063/1.1146705

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

To evaluate the performance of a high current H- rf-driven volume ion source, the Superconducting Super Collider ion source was modified to accommodate a set of cesium dispensers so that a trace amount of cesium could be introduced into the plasma grid collar. A plasma grid heater element controls the temperature of the cesiated surfaces and the rate of cesium dispensation. With this modification, beam currents in excess of 100 mA and electron to H- current ratios close to one have been observed. In contrast, the uncesiated source provided 30 mA of H- beam with an e/H- ratio >25. In both cases the source was operated with a 100 mu s beam pulse width at a 10 Hz repetition rate, and an extraction voltage of 35 kV. This cesium enhanced source is a strong candidate for use in high current H- accelerators. (C) 1996 American Institute of Physics.

引用

页码：1318 / 1320

页数：3