Effect of the plasma electrode position on the beam intensity and emittance of the RIKEN 18 GHz ECRIS

Journal Article · Mon Mar 14 23:00:00 EST 2005 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.1893369· OSTI ID:20630696

Higurashi, Y; Nakagawa, T; Kidera, M; Kase, M; Yano, Y ^[1]; Aihara, T ^[2]

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1. RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198 (Japan)
2. SHI, Accelerator Service Ltd, Kita-shinagawa 5-9-11, Shinjuku-ku, Tokyo 141-0001 (Japan)

We measured the beam intensity of Ar, Kr and Xe ions as a function of plasma electrode position. The beam intensities of lower charge state heavy ions increased when moving the plasma electrode toward the ECR zone. The RF power absorbed in the plasma chamber was slightly dependent on the gas pressure and 70% of injected RF power was absorbed. The emittance of ion source was gradually increased with increasing the drain current, which may be due to the space charge effect.

• OSTI ID: 20630696
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 749; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ARGON IONS
BEAM CURRENTS
BRIGHTNESS
CHARGE STATES
ECR ION SOURCES
ELECTRODES
ELECTRON CYCLOTRON-RESONANCE
GHZ RANGE
HEAVY IONS
ION BEAMS
JAPANESE ORGANIZATIONS
KRYPTON IONS
PLASMA
RF SYSTEMS
SPACE CHARGE
XENON IONS