Development of a Transverse Mode Damped Dielectric-Loaded Accelerating Structure

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-FG02-08ER85032
Agency Tracking Number: 85880
Amount: $99,994.00
Phase: Phase I
Program: SBIR
Awards Year: 2008
Solicitation Year: 2008
Solicitation Topic Code: 49 a
Solicitation Number: DE-PS02-07ER07-36
Small Business Information
5900 Harper Road #102, Solon, OH, 44139
DUNS: 141568639
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Chunguang Jing
 (440) 519-0410
Business Contact
 David Dunay
Title: Mr.
Phone: (440) 519-0410
Research Institution
As the dimensions of accelerating structures become smaller, or as beam intensities become higher, the transverse wakefields driven by the beam become quite large, even for a slight misalignment of the beam from the geometric axis. These deflection modes can cause inter-bunch beam breakup and intra-bunch head-tail instabilities along the beam path. This project will design a cylindrical dielectric-loaded accelerating structure that has a few longitudinal slots distributed along the copper wall of the dielectric loaded accelerator (DLA) structure, so that the transverse modes are not able to be confined inside the dielectric and vacuum channel. The energy of the transverse modes that propagate past the segmented boundary is absorbed in a SiC slab buried in the grooves. The accelerating mode can maintain good propagation characteristics along the structure with only a slight sacrifice of power loss. In Phase I, a 7.8GHz transverse mode damped DLA structure will be fabricated and bench tested. A detailed simulation of the beam dynamics inside the structure will be performed using the 3-D MAFIA code. Commercial Applications and other Benefits as described by the awardee: The transverse-mode-damped DLA structure could form the basis of a practical dielectric based accelerator for immediate use in high energy physics.

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

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