Operating experience with the LBL ECR source
The overall performance of the LBL ECR source in providing beam for the 88-Inch Cyclotron has been excellent. However, during the past two years there have been some fluctuations in the peak performance, particularly for the highest charge states. Among the factors which influence the peak performance are coatings from solid feeds or gases such as SiH/sub 4/ or CO/sub 2/, changes in first stage output, and variation in outgassing rates on the wall. Modifications made to the source have also affected its performance. In the plasma chamber the screens between the sextupole bars were removed to lower its Q/sub 0/. When the 9.2 GHz klystron used to power the first stage failed, it was replaced by a 10.3 GHz klystron. Tests were also made using 6.4 GHz to drive both first and second stages. The source performance in these various configuration will be reviewed.
- Research Organization:
- Lawrence Berkeley Lab., CA (USA)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 5481256
- Report Number(s):
- LBL-23909; CONF-8711107-4; ON: DE88005479
- Resource Relation:
- Conference: International conference on ECR ion sources and their applications, East Lansing, MI, USA, 16 Nov 1987
- Country of Publication:
- United States
- Language:
- English
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An ECR heavy-ion source for the LBL 88-inch cyclotron
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Related Subjects
ION SOURCES
PERFORMANCE
BEAM CURRENTS
CARBON DIOXIDE
ECR HEATING
MODIFICATIONS
OPERATION
SILANES
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CURRENTS
HEATING
HIGH-FREQUENCY HEATING
HYDRIDES
HYDROGEN COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC SILICON COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLASMA HEATING
SILICON COMPOUNDS
430301* - Particle Accelerators- Ion Sources