International Scoping Study
Machine Working Group
Acceleration
200 MHz Superconducting Cavities
RF frequency (MHz) | 201.25 | 201.25 | 201.25 |
Cells per cavity | 2 | 2 | 1 |
Aperture diameter (cm) | 46 | 30 | 30 |
Energy gain per cavity (MV) | 22.5 | 25.5 | 12.75 |
Stored energy per cavity (J) | 1932 | 2008 | 1004 |
Input power | 980 | 1016 | 508 |
RF on time (ms) | 3 | 3 | 3 |
R/Q (Ω) | 208 | 258 | 129 |
Gradient (MV/m) | 15 | 17 | 17 |
Q0 | 6 109 | 6 109 | 6 109 |
QL | 106 | 106 | 106 |
For more details, see:
-
S. Ozaki, R. Palmer, M. Zisman, and J. Gallardo, eds.,
Feasibility
Study-II of a Muon-Based Neutrino
Source, BNL-52623 (2001). Section 8.5 contains the
RF cavity specifications.
-
R. L. Geng, et al.,
First
RF Test at 4.2K of a 200MHz Superconducting Nb-Cu Cavity, in
Proceedings of the 2003 Particle Accelerator
Conference, Joe Chew, Peter Lucas, and Sara Webber, eds.,
(IEEE, Piscataway, NJ, 2003), pp. 1309–1311. This
is the most recently published paper
containing Cornell's experimental results on a 200 MHz
single cell prototype for the superconducing cavities we propose here.
-
Don Hartill,
200MHz
SCRF cavity development, presented at the
April
25–26 2005 MUTAC review of
the Neutrino Factory and Muon Collider Collaboration.
This talk contains the most recent experimental results from Cornell
relevant to the 200 MHz superconducting cavities.
-
M. Ono et al.,
Magnetic Field Effects on Superconducting
Cavity,
in 9th Workshop on RF Superconductivity,
Los Alamos National Laboratory report LA-13782-C. This paper is
the basis for our hope that we can operate these cavities with
a magnetic field of as much as 0.1 T at the cavity surface.
Don Hartill's talk above also presents positive results testing
the 200~MHz cavity with a magnetic field as high as 0.12 T.