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Single Shot Bunch Length Monitoring, Based on Interferometer and Novel THz Sensing

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-FG02-07ER84814
Agency Tracking Number: 82778
Amount: $749,571.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: 14
Solicitation Number: DE-PS02-06ER06-30
Solicitation Year: 2007
Award Year: 2008
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
1600 Sawtelle Blvd STE 300
Los Angeles, CA 90025
United States
DUNS: 140789137
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Gerard Andonian
 (310) 444-1475
Business Contact
 Salime Boucher
Title: Dr
Phone: (310) 444-1475
Research Institution

With the recent development of advanced photoinjector accelerators and next generation light sources, the progression towards high-current, ultra-short beams is very important. The knowledge of the longitudinal profile and bunch length of the short pulses is necessary for performance optimization and benchmarking to computational models. Thus, in order to achieve successful beam operation, it will be essential to measure these short pulses in a single-shot, in real time, and with sub-picosecond time resolution. This project will develop a real-time bunch-length interferometer utilizing a novel beam autocorrelation technique. In this approach, the interference of the beam with itself takes place on the plane of a terahertz detector array; the spatial interference is correlated to the horizontal position along the array. Phase I consisted of theoretical calculations and modeling of coherent radiation sources typical of accelerator facilities, and the design of an interferometer scheme efficient in the terahertz regime. Laboratory testing and a detector survey also were conducted. Commercial Applications and Other Benefits as described by the awardee: The real-time interferometer would be of great use to the accelerator community. In addition, the real time interferometer could be incorporated into a feedback loop to lock the bunch length of the beam, thus guaranteeing consistent parameter sets for Free Electron Laser, Compton Scattering, and collider facilities. Finally, the technology should have numerous applications in the growing field of terahertz radiation creation and imaging.

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

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