Radiation spectrometer for RF breakdown detection in THz linear accelerators

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-SC0013684
Agency Tracking Number: 224856
Amount: $999,458.00
Phase: Phase II
Program: SBIR
Awards Year: 2016
Solicitation Year: 2016
Solicitation Topic Code: 27a
Solicitation Number: DE-FOA-0001490
Small Business Information
1713 Stewart Street, Array, Santa Monica, CA, 90404
DUNS: 078618369
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Sergey Kutsaev
 Dr.
 (310) 822-5845
 kutsaev@radiabeam.com
Business Contact
 Salime Boucher
Title: Mr.
Phone: (310) 822-5845
Email: boucher@radiabeam.com
Research Institution
N/A
Abstract
The future of high energy particle physics and Xray light sources for biological and material research require miniaturized linear accelerators that at present cannot be qualified using existing methods. Such miniaturized linear accelerates will be instrumental in managing the cost of future accelerator facilities. There is presently no suitable diagnostic for ensuring RF breakdowns are minimized during the commissioning stage of these miniaturized linacs. In response to this shortcoming, RadiaBeam proposes to develop and build an automated singleshot gratingbased spectrometer working in the terahertz regime of these new miniaturized linacs. Such a device will be capable of measuring the presence of an RF breakdown event and will be used as a feedback mechanism in the commissioning of these linacs. Such grating spectrometers exist in the visible and infrared regimes but recent advances in materials science and detector technology make this scheme extendable to the regime of interest on a costeffective basis. A proofofprinciple spectrometer was developed and tested with bench top sources. After calibration and bench testing, the spectrometer was used in the successful qualification of a terahertz linac at Facility for Advanced Accelerator Experimental Tests (FACET) beamline at SLAC. The shortcomings of the proofofconcept device and potential additions were identified. Building on the success of the prooforprinciple demonstration, RadiaBeam will design and deploy a narrow band and wideband spectrometer for general THz instrumentation and terahertz linac qualification. The resulting spectrometers will be full commercial devices and will be tested at the THz test stand at the advanced Photon Source, and as an advanced RFBD diagnostic at MIT during the commissioning of a nextgeneration terahertz linac. The proposed spectrometer will allow advancement of miniaturized terahertz linacs, allowing miniaturization of many future DOE accelerator facilities. In addition, the oneofakind single shot spectrometer developed here can be used in a wealth of complimentary fields, including terahertz instrumentation, bunch length diagnostics, drug discovery, and homeland security. Key Words THz, terahertz, mmwave, spectrometer, singleshot, Wband, linac. RadiaBeam Systems seeks to build a commercial quality THz spectrometer necessary to qualify the next generation of miniaturized particle accelerators. The spectrometer has additional applications in biology, drug discovery, security, and general instrumentation while serving the DOE mission of basic science.

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

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