Test results of [beta]=0.64, 700 MHZ, 5-cell elliptical cavities

Conference · Sun Dec 31 23:00:00 EST 2000

OSTI ID:975737

Chan, K D ^[1]; Edwards, R L ^[2]; Gentzlinger, R C ^[3]; Haynes, W B ^[4]; Kelley, J P ^[5]; Krawczyk, F L ^[6]; Ledford, J E ^[7]; Madrid, M A ^[8]; Montoya, D I ^[9]; Schrage, D L ^[10]; Shapiro, A H ^[11]; Mammosser, J ^[12]; Tajima, T ^[13]

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1. Kwok-Chi D.
2. Randall L.
3. Robert C.
4. William B.
5. John Patrick
6. Frank L.
7. John E.
8. Michael A.
9. Debbie I.
10. Dale L.
11. Alan H.
12. John
13. Tsuyoshi

Six 5-cell superconducting elliptical cavities have been fabricated at LANL and in industry and tested at LANL and TJNAF. The APT (Accelerator Production of Tritium) specification requires Qo > 5 x 109 at an accelerating field of 5 MV/m. So far, the results of vertical tests have shown maximum accelerating fields of 12 MV/m (peak surface field of 41 MV/m and 835 Oe ) and maximum Q0 of 3.6 x 1010 at 2 K (2.1 x 1010 at Eacc = 5 MV/m). The present limitations are available input power, field emission and quench. With a new 600 W amplifier and a mapping system for surface temperature and x-ray radiation, we are trying to identify and localize the emission/quench source(s) to further improve the cavity performance.

• Research Organization: Los Alamos National Laboratory
• Sponsoring Organization: DOE
• OSTI ID: 975737
• Report Number(s): LA-UR-01-5049
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AMPLIFIERS
CAVITIES
FIELD EMISSION
LANL
PERFORMANCE
PRODUCTION
SPECIFICATIONS
SUPERCONDUCTIVITY
TRITIUM