Superconducting Tunnel Junction Detectors for High-Resolution X-Ray Spectroscopy

Award Information
Agency:
Department of Energy
Branch
n/a
Amount:
$999,934.00
Award Year:
2012
Program:
SBIR
Phase:
Phase II
Contract:
DE-FG02-11ER90168
Award Id:
n/a
Agency Tracking Number:
97186
Solicitation Year:
2012
Solicitation Topic Code:
17 c
Solicitation Number:
DE-FOA-0000676
Small Business Information
25 Bisbee Court, Suite A, Santa Fe, NM, 87508-1338
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
071331768
Principal Investigator:
Robin Cantor
Dr.
(505) 424-6454
rcantor@starcryo.com
Business Contact:
Robin Cantor
Dr.
(505) 424-6454
rcantor@starcryo.com
Research Institute:
Stub




Abstract
X-ray absorption spectroscopy is a widely used experimental technique for studying the composition and chemistry of materials and is one of the driving forces behind the explosive growth of synchrotron light sources and their increase in brightness by many orders of magnitude. However, advances in detector technology have not kept pace with advances in synchrotron brightness, leading to limitations on scientific output and research capabilities. In Phase I, STAR Cryoelectronics developed an innovative and streamlined process for the fabrication of high energy resolution, high count rate superconducting tunnel junction (STJ) X- ray detectors based on Ta thin films that will meet growing needs for advanced detectors for synchrotron science applications. Several prototype STJ detectors and detector arrays were successfully fabricated and characterized during Phase I. Record energy resolution has been achieved, and multi-pixel arrays with up to 112 pixels were successfully fabricated. During Phase II, STAR Cryoelectronics plans to further improve energy resolution, increase the maximum count rate per pixel, and enhance production yield and detector reliability. Commercial Applications and Other Benefits: The new STJ detector arrays represent the enabling technology for two significant commercial applications: X-ray absorption spectroscopy (XAS) at the synchrotron, which is used to study the local molecular and electronic structure of specific elements, and X-ray microanalysis in conjunction with a scanning electron microscope (SEM), which is used for defect and failure analysis. XAS samples can be highly diluted and generally do not require substantial pre- treatment, and they can range from chemicals and biological samples or tissues to soils and rocks. The development and commercialization of multi-pixel arrays of advanced STJ X-ray detectors will meet growing needs for improved detector instrumentation for applications in synchrotron science such as XAS. The significant performance enhancements that will be realized with the proposed STJ X-ray detector arrays will lead to greater scientific productivity and return on the Nations substantial capital investment in synchrotron facilities.

* information listed above is at the time of submission.

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