Anti-Breakdown Coatings for High-Gradient Accelerator Structures

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-FG02-09ER86402
Agency Tracking Number: 91148
Amount: $100,000.00
Phase: Phase I
Program: STTR
Awards Year: 2009
Solicitation Year: 2009
Solicitation Topic Code: 39 a
Solicitation Number: DE-PS02-08ER08-34
Small Business Information
258 Bradley Street, New Haven, CT, 06510
DUNS: 084736651
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Jay Hirshfield
 (203) 789-1164
Business Contact
 George Trahan
Title: Dr
Phone: (203) 789-1165
Research Institution
 University of California, San Diego
 Carlos Molina
 Office of Contract and Grant A
9500 Gilman Dr, #0934
La Jolla, CA, 92093
 (858) 534-0247
 Nonprofit college or university
Accelerator structures that can sustain acceleration gradients in the range of 150 MeV/m are required in order to build a future multi-TeV collider with an energy reach beyond present or planned electron-positron colliders. However, limitations arise from RF breakdown and from difficulties in developing the necessary RF drive power. This project will apply high-melting-point insulated coatings to accelerator structures to mitigate against the explosive emission and surface melting that accompany RF breakdown. In Phase I, high-melting-point insulated coatings will be applied: first to test samples, and later to parts from an experimental SLAC accelerator cavity. Strong adherence of the coating to the underlying copper will be achieved by the use of a graded coating, in which the composition varies smoothly from the copper outwards to the pure insulator. Tests will be conducted to determine whether the coatings on the cavity parts can survive thermal cycling from room temperature up to the brazing temperature for the accelerator cavities. Commercial Applications and other Benefits as described by the awardee: Structures that can sustain high accelerating gradients without an undue frequency of breakdown would be the basis for a future multi-TeV electron-positron collider and would hasten the day when commercial companies can obtain multi-million dollar manufacturing contracts for the accelerator structures.

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

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