Development of a 25-mA, 12% duty factor(df) H-source for LANSCE.

Conference · Thu Jan 01 04:00:00 EST 2004

OSTI ID:977680

Arvin, A H ^[1]; Chacon-Golcher, E ^[2]; Geros, E G ^[3]; Jacobson, E G ^[4]; Meyer, B J ^[5]; Naffziger, P H ^[6]; Rouleau, G ^[7]; Schaller, S ^[8]; Sherman, Joseph D; Stelzer, J E ^[9]; Zaugg, T J ^[10]

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1. Andy H.
2. Edwin
3. Ernest G.
4. Edward G.
5. Bruce J.
6. Peter H.
7. Gary
8. Stuart
9. James E.
10. Thomas J.

Present operations at the Los Alamos Neutron Science Center (LANSCE) accelerator use a surface conversion source to provide 80-keV, 16 to 18-mA H{sup -} beams with typical lab emittance of 7({pi}cm-mrad). Operational flexibility of the 800-MeV linac, proton storage ring, and other experimental facilities will be increased by a higher current if source. The present goal is to achieve a 25 mA H{sup -} surface converter source with modest (20%) emittance increase without sacrificing the present LANSCE production source 12% df and 28-day lifetime. The LANSCE 80-kV ion source test stand (ISTS) has been brought into reliable 24-hour per day operation with computer control and modern electronics. A fourth production source has been fabricated, and is now operating on the ISTS. H{sup -} currents up to 25 mA have been observed with 8-9 ({pi}cm-mrad) lab emittances. An experimental study of surface converter geometries and electron filters at the emitter electrode are planned to optimize source current and emittance.

• Research Organization: Los Alamos National Laboratory
• Sponsoring Organization: DOE
• OSTI ID: 977680
• Report Number(s): LA-UR-04-3993
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
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ELECTRODES
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LIFETIME
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STORAGE RINGS