Development of a Superconducting RF Multi-Spoke Cavity for Compact Light Sources

Award Information
Agency:
Department of Energy
Branch
n/a
Amount:
$1,000,000.00
Award Year:
2012
Program:
SBIR
Phase:
Phase II
Contract:
DE-FG02-11ER90121
Agency Tracking Number:
97148
Solicitation Year:
2012
Solicitation Topic Code:
15 b
Solicitation Number:
DE-FOA-0000676
Small Business Information
Niowave, Inc.
1012 N. Walnut St., Lansing, MI, -
Hubzone Owned:
Y
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
621290001
Principal Investigator:
Terry L Grimm
Dr.
(517) 999-3475
grimm@niowaveinc.com
Business Contact:
Jerry Hollister
Dr.
(517) 230-7417
hollister@niowaveinc.com
Research Institution:
Stub




Abstract
Superconducting radio frequency (SRF) accelerating cavities are being successfully used for acceleration of electron beams worldwide. The use of superconducting structures helps maximize the accelerating gradient, which is a highly desirable trait for applications involving linear accelerators or storage rings. Application of todays multi-spoke accelerating structures in future SRF electron linacs and synchrotrons will allow a further reduction in the overall size of acceleration sections without compromising its performance. Compact accelerators utilizing SRF cavities can be successfully used in the broad range of applications from x-rays machines for cancer therapy and sterilization, to tunable x-ray and gamma sources, to high energy electron accelerators and colliders. This SBIR proposal will develop a design of the 700 MHz superconducting multi-spoke cavity capable of accelerating electrons. In addition to building a cavity and associated cryomodule, Niowave will integrate a 5 watt cryocooler with the spoke cryomodule, resulting in a stand-alone spoke cavity based accelerating system operating at 4 K. Phase I demonstrated the technical feasibility of the project by completing the preliminary cavity and cryomodule designs. Phase II will finalize both designs, then fabricate and test the SRF multi-spoke cavity in the cryomodule. The cavity is designed to operate at 700 MHz and is capable of differential acceleration of electrons by ~12.5 MeV with electric and magnetic surface fields no more than ~46.7 MV/m and ~79.8 mT respectively. The integrated cryocooler system operates at 4 K. The cryogenic load can be significantly reduced by operating in a pulsed mode or by reducing the overall accelerating voltage.

* information listed above is at the time of submission.

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