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Title: Reduced length design of 9.8 MHz RF accelerating cavity for the positron accumulator ring (PAR) of the Advanced Photon Source (APS)

Abstract

A 9.8-MHz RF accelerating cavity is developed for the first harmonic system in the APS PAR and an aluminum unit is tested. The design goal si 40 kV at the accelerating gap, Q-factor of {approximately} 7,000 for the accelerating mode, 1.2-m diameter, 1.6-m length with good mechanical strength and stability. The design employs no dielectric or ferrite loading for tuning. The cavity is a plunger-loaded reentrant coaxial structure; the end of the inner conductor facing the wall has a piston-shaped loading structure which consists of a circular disk and a cylinder. The RF characteristic of the cavity was investigated using the URMEL-T and MAFIA programs. Compared with a coaxial structure with lumped element capacitive loading, this design gives improved RF characteristics.

Authors:
; ;
Publication Date:
Research Org.:
Argonne National Lab., IL (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10176604
Report Number(s):
ANL/ASD/CP-78341; CONF-930511-315
ON: DE93017703
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Conference
Resource Relation:
Conference: PAC `93: international particle accelerator conference,Washington, DC (United States),17-20 May 1993; Other Information: PBD: [1993]
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ADVANCED PHOTON SOURCE; RF SYSTEMS; CAVITY RESONATORS; DESIGN; HARMONICS; IMPEDANCE; POSITRON BEAMS; 430303; EXPERIMENTAL FACILITIES AND EQUIPMENT

Citation Formats

Kang, Y W, Bridges, J F, and Kustom, R L. Reduced length design of 9.8 MHz RF accelerating cavity for the positron accumulator ring (PAR) of the Advanced Photon Source (APS). United States: N. p., 1993. Web.
Kang, Y W, Bridges, J F, & Kustom, R L. Reduced length design of 9.8 MHz RF accelerating cavity for the positron accumulator ring (PAR) of the Advanced Photon Source (APS). United States.
Kang, Y W, Bridges, J F, and Kustom, R L. 1993. "Reduced length design of 9.8 MHz RF accelerating cavity for the positron accumulator ring (PAR) of the Advanced Photon Source (APS)". United States. https://www.osti.gov/servlets/purl/10176604.
@article{osti_10176604,
title = {Reduced length design of 9.8 MHz RF accelerating cavity for the positron accumulator ring (PAR) of the Advanced Photon Source (APS)},
author = {Kang, Y W and Bridges, J F and Kustom, R L},
abstractNote = {A 9.8-MHz RF accelerating cavity is developed for the first harmonic system in the APS PAR and an aluminum unit is tested. The design goal si 40 kV at the accelerating gap, Q-factor of {approximately} 7,000 for the accelerating mode, 1.2-m diameter, 1.6-m length with good mechanical strength and stability. The design employs no dielectric or ferrite loading for tuning. The cavity is a plunger-loaded reentrant coaxial structure; the end of the inner conductor facing the wall has a piston-shaped loading structure which consists of a circular disk and a cylinder. The RF characteristic of the cavity was investigated using the URMEL-T and MAFIA programs. Compared with a coaxial structure with lumped element capacitive loading, this design gives improved RF characteristics.},
doi = {},
url = {https://www.osti.gov/biblio/10176604}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jul 01 00:00:00 EDT 1993},
month = {Thu Jul 01 00:00:00 EDT 1993}
}

Conference:
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