Development of a 400 MHz Superconducting RF Crabbing Cavity

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-FG02-09ER86400
Agency Tracking Number: 91179
Amount: $100,000.00
Phase: Phase I
Program: STTR
Awards Year: 2009
Solicitation Year: 2009
Solicitation Topic Code: 39 g
Solicitation Number: DE-PS02-08ER08-34
Small Business Information
1012 N. Walnut Street, Lansing, MI, 48906
DUNS: 621290001
HUBZone Owned: Y
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Jean Delayen
 Dr
 (757) 269-7420
 delayen@jlab.org
Business Contact
 Jerry Hollister
Title: Dr
Phone: (517) 230-7417
Email: hollister@niowaveinc.com
Research Institution
 Thomas Jefferson National Accelerator Facility
 James Boyce
 1200 Jefferson Ave
Newport News, VA, 23606
 (757) 269-7443
 Federally funded R&D center (FFRDC)
Abstract
The Large Hadron Collider (LHC), which is scheduled to be fully operational in 2009, will be at the energy frontier in high energy physics for many years to come. Even before being operational, plans have been under discussion for an upgrade, particularly with respect to an increase in luminosity. One avenue that has been under discussion is the introduction of a bunch crabbing scheme to restore the luminosity lost due the finite crossing angle. Because LHC bunches are fairly long, the curvature introduced by the RF field must be kept to a minimum, in order to gain the maximum benefit from crabbing the bunches. This requirement implies low RF frequency, 400 MHz or less. Unfortunately, all conventional designs for RF crabbing cavities at that frequency are larger than space allows. This project will develop a 400 MHz superconducting crabbing cavity that is about half the size of the conventional design and, at the same time, has other attractive properties. Phase I will develop the crabbing structure and cryomodule design, based on systems efficiency, beam dynamics simulations, and higher order mode (HOM) analysis. Phase II will prototype critical aspects of the system, such as the SRF cavities, power coupler, HOM spectrum, and frequency tuners. Commercial Applications and other Benefits as described by the awardee: A cavity that will satisfy the requirements of the Large Hadron Collider luminosity upgrade would be marketed internationally to existing and planned facilities.

* Information listed above is at the time of submission. *

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