Design of a merging beamlet pre-accelerator for an electrostatic quadrupole accelerator (ESQ)
| Autor: | Chun Fai Chan, M. C. Vella |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
Physics
business.industry Particle accelerator Plasma Injector Electrostatics Condensed Matter Physics Linear particle accelerator law.invention Extractor Nuclear physics Optics Nuclear Energy and Engineering law Quadrupole Thermal emittance Atomic physics business Merge (version control) Beam (structure) |
| Zdroj: | Plasma Devices and Operations. 3:247-256 |
| ISSN: | 1029-4929 1051-9998 |
| DOI: | 10.1080/10519999408225555 |
| Popis: | A self-consistent 2D particie codfe has been used to develop a design for a merging beamlet pre-ac-celerator. On the basis of this design, an experiment is planned to merge 200 mA of multi-beamlet H at 100 keV into a single channel electrostatic quadrupole accelerator (ESQ), which will boost the beam to 200 kV. The experiment is a collaboration which will use a JAERI volume H” plasma source and focused multi-aperture extractor, mated to the LBL 200 kV prototype ESQ. The ESQ acceptance re-auirements are: H−current ≤ 200 mA; input radius ≤ 1 cm; and convergence -10 mrad to -30 mrad for a circular beam. This design matches the ESQ acceptance and scales to an injector for ITER current drive neutral beams. The critical elements for merging are a focus ring to enhance the focusing of the JAERI extractor and a gradient grid to produce a merged beamlet configuration which minimizes emit-tance growth. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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