skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: 805 MHz Beta = 0.47 Elliptical Accelerating Structure R & D

Abstract

A 6-cell 805 MHz superconducting cavity for acceleration in the velocity range of about 0.4 to 0.53 times the speed of light was designed. After single-cell prototyping, three 6-cell niobium cavities were fabricated. In vertical RF tests of the 6-cell cavities, the measured quality factors (Q{sub 0}) were between 7 {center_dot} 10{sup 9} and 1.4 {center_dot} 10{sup 10} at the design field (accelerating gradient of 8 to 10 MV/m). A rectangular cryomodule was designed to house 4 cavities per cryomodule. The 4-cavity cryomodule could be used for acceleration of ions in a linear accelerator, with focusing elements between the cryomodules. A prototype cryomodule was fabricated to test 2 cavities under realistic operating conditions. Two of the 6-cell cavities were equipped with helium tanks, tuners, and input coupler and installed into the cryomodule. The prototype cryomodule was used to verify alignment, electromagnetic performance, frequency tuning, cryogenic performance, low-level RF control, and control of microphonics.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Michigan State University, East Lansing MI
Sponsoring Org.:
USDOE Office of Science and Technology (EM-50)
OSTI Identifier:
937509
Report Number(s):
DOE/FG/41247-1
TRN: US1001285
DOE Contract Number:  
FG02-03ER41247
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ACCELERATION; ALIGNMENT; CAVITIES; CRYOGENICS; DESIGN; FOCUSING; HELIUM; LINEAR ACCELERATORS; NIOBIUM; PERFORMANCE; QUALITY FACTOR; TANKS; TUNING; VELOCITY; cryomodule development

Citation Formats

Bricker, S, Compton, C, Hartung, W, Johnson, M, Marti, F, Popierlarski, J, York, R C, and et al. 805 MHz Beta = 0.47 Elliptical Accelerating Structure R & D. United States: N. p., 2008. Web. doi:10.2172/937509.
Bricker, S, Compton, C, Hartung, W, Johnson, M, Marti, F, Popierlarski, J, York, R C, & et al. 805 MHz Beta = 0.47 Elliptical Accelerating Structure R & D. United States. https://doi.org/10.2172/937509
Bricker, S, Compton, C, Hartung, W, Johnson, M, Marti, F, Popierlarski, J, York, R C, and et al. 2008. "805 MHz Beta = 0.47 Elliptical Accelerating Structure R & D". United States. https://doi.org/10.2172/937509. https://www.osti.gov/servlets/purl/937509.
@article{osti_937509,
title = {805 MHz Beta = 0.47 Elliptical Accelerating Structure R & D},
author = {Bricker, S and Compton, C and Hartung, W and Johnson, M and Marti, F and Popierlarski, J and York, R C and et al},
abstractNote = {A 6-cell 805 MHz superconducting cavity for acceleration in the velocity range of about 0.4 to 0.53 times the speed of light was designed. After single-cell prototyping, three 6-cell niobium cavities were fabricated. In vertical RF tests of the 6-cell cavities, the measured quality factors (Q{sub 0}) were between 7 {center_dot} 10{sup 9} and 1.4 {center_dot} 10{sup 10} at the design field (accelerating gradient of 8 to 10 MV/m). A rectangular cryomodule was designed to house 4 cavities per cryomodule. The 4-cavity cryomodule could be used for acceleration of ions in a linear accelerator, with focusing elements between the cryomodules. A prototype cryomodule was fabricated to test 2 cavities under realistic operating conditions. Two of the 6-cell cavities were equipped with helium tanks, tuners, and input coupler and installed into the cryomodule. The prototype cryomodule was used to verify alignment, electromagnetic performance, frequency tuning, cryogenic performance, low-level RF control, and control of microphonics.},
doi = {10.2172/937509},
url = {https://www.osti.gov/biblio/937509}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Sep 22 00:00:00 EDT 2008},
month = {Mon Sep 22 00:00:00 EDT 2008}
}