Testing of a high current dc ESQ accelerator
Conference
·
OSTI ID:5727288
A high current dc electrostatic quadrupole (ESQ) accelerator is being developed for negative-ion-based neutral beam heating and current drive on the next generation tokamak. Beam energy and current will eventually be in the MeV and multiampere range.l This CCVV (constant- current variable-voltage) accelerator uses a series of identical ESQ modules. We have successfully tested a prototype CCVV accelerator up to 200 keV with a 100 mA He{sub +} beam (with space charge equivalence of 140 mA of D{sup {minus}}) for a pulse length of 1 s. Testing was also done with a 42 mA H{sup {minus}} beam (H{sup {minus}} beam current was limited by source performance). There was almost no beam loss in the ESQ accelerator. no emittance growth was found in the beam injected from the preaccelerator into the ESQ accelerator had low aberration. We are presently designing a proof-of- principle one-channel CCVV accelerator that would accelerate 1.0 A of D{sup {minus}} 1.3 MeV energy. 4 refs., 7 figs.
- Research Organization:
- Lawrence Berkeley Lab., CA (USA)
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (USA)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 5727288
- Report Number(s):
- LBL-29974; CONF-910505--205; ON: DE91013753
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
43 PARTICLE ACCELERATORS
430100 -- Particle Accelerators-- Design
Development
& Operation
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700205* -- Fusion Power Plant Technology-- Fuel
Heating
& Injection Systems
ACCELERATORS
BEAM EMITTANCE
BEAM INJECTION HEATING
BEAMS
CLOSED PLASMA DEVICES
CURRENT-DRIVE HEATING
ELECTRIC HEATING
ELECTROSTATIC ACCELERATORS
HEATING
HYDROGEN 1 MINUS BEAMS
ION BEAMS
ITER TOKAMAK
JOULE HEATING
MULTIPOLES
PLASMA HEATING
QUADRUPOLES
RESISTANCE HEATING
TESTING
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
430100 -- Particle Accelerators-- Design
Development
& Operation
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700205* -- Fusion Power Plant Technology-- Fuel
Heating
& Injection Systems
ACCELERATORS
BEAM EMITTANCE
BEAM INJECTION HEATING
BEAMS
CLOSED PLASMA DEVICES
CURRENT-DRIVE HEATING
ELECTRIC HEATING
ELECTROSTATIC ACCELERATORS
HEATING
HYDROGEN 1 MINUS BEAMS
ION BEAMS
ITER TOKAMAK
JOULE HEATING
MULTIPOLES
PLASMA HEATING
QUADRUPOLES
RESISTANCE HEATING
TESTING
THERMONUCLEAR DEVICES
TOKAMAK DEVICES