Niobium coaxial quarter-wave cavities for the New Delhi booster linac

Conference · Thu Jul 01 04:00:00 EDT 1993

OSTI ID:10175575

Shepard, K W ^[1]; Roy, A; Potukuchi, P N ^[2]

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1. Argonne National Lab., IL (United States)
2. Nuclear Science Centre, New Delhi (India)

This paper reports the design and construction status of a prototype superconducting niobium accelerating structure consisting of a pair of quarter-wave coaxial-line cavities which are strongly coupled with a superconducting loop. Quarter-wave resonators are two-gap accelerating structures and are relatively short, so that a large number of independently-phased cavities is required for a linac. Strongly coupling several cavities can reduce the number of independently-phased elements, but at the cost of reducing the range of useful velocity acceptance for each element. Coupling two cavities splits the accelerating rf eigenmode into two resonant modes each of which covers a portion of the full velocity acceptance range of the original single cavity mode. Using both of these resonant modes makes feasible the use of coupled cavity pairs for a linac with little loss m velocity acceptance. Design details for the niobium cavity pair and the results of preliminary tests of multipacting behavior are discussed.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 10175575
• Report Number(s): ANL/PHY/CP--78214; CONF-930511--281; ON: DE93017426
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430303
DESIGN
EXPERIMENTAL FACILITIES AND EQUIPMENT
LINEAR ACCELERATORS
PARTICLE BOOSTERS
SUPERCONDUCTING CAVITY RESONATORS
TESTING