DEVELOPMENTS OF 700-MHZ 5-CELL SUPERCONDUCTING CAVITIES FOR APT Page: 3 of 3
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at LANL . Moreover, a new 600 W power amplifier
will be received soon and we will be able to do CW/pulse
processing at higher power. In addition, if funded, we
would like to perform a "guided repair" on the LANL
cavity that indicated some defect on the equator region of
the middle cell.
The performance of all the six prototype APT 700-MHz
5-cell cavities is presented. All the cavities surpassed the
APT goals with ample mrgin. The achievement of these
results with relatively large 5-cell cavities (surface area =
0.858 4) and without high-temperature heat treatment (>
150 C) is remarkable.
For the ADTF, however, the goals will be E, = 10
MV/m at Q = 5 x 109. To achieve this goal with enough
margins for reliable operation, we will have to solve the
field emission problem and reach a maximum field of 13-
 P. Lisowski, "The Accelerator Production of Tritium,"
Proc. PAC'97, Vancouver, B. C., Canada, May 1997,
 K. C. D. Chan, "LANL Activities" and "APT Power
Couplers," Superconducting Proton Linac Workshop,
Saclay, France, October 2000, http://www-
 T. Tajima, et al., "Results of Vertical Tests with 700
MHz 5-cell ((3=0.64) Superconducting Cavities
Developed for APT," Superconducting Proton Linac
Workshop, Saclay, France, October 2000, ibid. .
 K. C. D. Chan, et al., "Status of Superconducting RF
Linac Development for APT," LINAC2000, Monterey,
CA, USA, August 2000.
 J. Kuzminski, et al., "Industrial Fabrication of
Medium-Beta SCRF Cavities for a High-Intensity
Proton Linac," ibid. .
 E. N. Schmierer, et al., "High-Power Testing of the
APT Power Coupler," ibid. .
 F. L. Krawczyk et al., "Status of the LANL Activities
in the Field of RF Superconductivity," Proc. 9th
Workshop on RF Superconductivity, Santa Fe, New
Mexico, USA, November 1999. p. 46.
 R. Mitchell et al., "Structural Analysis of the APT
Superconducting Cavities," ibid. , p. 405.
 E. Newman et al., "APT Cryomodule Assembly and
the Usefulness of the Mockup Model," ibid. , p.
 W. B. Haynes et al., "High-Power Coaxial Coupler
Design and Testing," ibid. , p. 570.
 R. C. Gentzlinger et al., "Design, Analysis and
Fabrication of the APT Cavities," PAC'99, New York,
Mar. 29 - Apr. 2, 1999.
 D. J. Katonak et al., "Superconducting RF Lab
Facility Upgrades at Los Alamos," ibid. .
 J. Kuzminski et al., "Fabrication of a Prototype
Medium-Beta, 700 MHz APT Superconducting RF
Cavity with Industry," ibid. .
 E. Newman et al., "APT Cryomodule Assembly
Process and Mockup Model," ibid. .
 K. C. D. Chan et al., "Progress of APT
Superconducting Linac Engineering Development,"
LINAC' 98, Chicago, Illinois, USA, August 1998.
 K. C. D. Chan et al., "Engineering Development of
Superconducting RF Linac for High-Power
Applications," EPAC' 98, Stockholm, Sweden, June
 B. Rusnak et al., "High Intensity Proton Linac
Activities at Los Alamos," Proc. 81h Workshop on RF
Superconductivity, Abano Terme, Italy, October 1997.
 W. B. Haynes et al., "Medium-Beta Superconducting
Cavity Tests at Los Alamos National Lab for High-
Current, Proton Accelerator," ibid. , p. 523.
 F. Krawczyk et al., "The Power Coupler Design for
the APT Superconducting Accelerator," ibid. , p.
 B. M. Campbell et al., "Design Status of the
Cryomodules for the APT Linac," ibid. , p.774.
 B. Rusnak et al., "In-Situ Proton Irradiation and
Measurement of Superconducting RF Cavities under
Cryogenic Conditions," Proc. PAC'97, Vancouver, B.
C., Canada, May 1997, p. 3096.
 F. L. Krawczyk et al., "Superconducting Cavities for
the APT Accelerator," ibid. , p. 2914.
 F. L. Krawczyk, "Higher Order Mode Analysis of the
APT Superconducting Cavities," ibid. , p. 3093.
 J. L. Anderson, "Technology Development for the
Accelerator Production of Tritium," ibid. 
 T. Tajima et al., "A New Temperature and X-ray
Mapping System for 700-MHz 5-cell Superconducting
Cavities," this conference.
 P. Balleyguier, "External Q Studies for APT SC-
Cavity Couplers," ibid. , p. 133.
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TAJIMA, T.; MONTOYA, D. I & AL, ET. DEVELOPMENTS OF 700-MHZ 5-CELL SUPERCONDUCTING CAVITIES FOR APT, article, June 1, 2001; New Mexico. (digital.library.unt.edu/ark:/67531/metadc717507/m1/3/: accessed October 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.