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Abstracts of HSHQDC-12-R-00052 Phase I Awards
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12.1-001

Company

CapeSym, Inc.
6 Huron Drive
Suite 1B
Natick, MA 01760-1325

Proposal Information DNDOSBIR12-01-FP-001-CAPE - Establishment of Scientific and Industrial Base for Production of High Purity Precursor Materials for SrI2:Eu and CLYC
Topic Information 12.1-001 - High Purity Precursor Materials for Growth of Large Single Crystals
Award/Contract Number HSHQDC-12-C-00093
Abstract

Successful growth of novel halide scintillators SrI2:Eu and CLYC depends on a supply of highly pure precursor materials. CapeSym and SAFC will partner to provide holistic analysis of the nature of precursor impurities and their impact on scintillator performance. We will characterize light and heavy impurities, purify the material through novel techniques, and re-test outputs. In parallel we will conduct pricing analysis to estimate the volumes required to reach various cost targets. In this way we will begin to measure and correlate the relationship between impurities, scintillator yield, and processing costs. Anticipated benefits include: - increased understanding of binary-halide contamination issues - improved precursor processing techniques - improved scintillator performance - a roadmap for attaining precursor cost reduction

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12.1-002

Company

Intelligent Optical Systems, Inc.
2520 W 237th Street
Torrance, CA 90505-5217

Proposal Information DNDOSBIR12-02-FP-001-IOS - Embedding of Advanced Search Technique for Detect, Locate, and Track for Pedestrian-based Search
Topic Information 12.1-002 - Embedding of Advanced Search Technique for Detect, Locate, and Track for Pedestrian-based Search
Award/Contract Number HSHQDC-12-C-00108
Abstract

Adjudication to support law enforcement and first responder adjudication of anomalous gamma ray

Company

Physical Sciences Inc.
20 New England Business Center
Andover, MA 01810-1077

Proposal Information DNDOSBIR12-02-FP-001-PSI - Embedded Algorithms for Radioactive Source Localization and Tracking During Advanced Pedestrian Search
Topic Information 12.1-002 - Embedding of Advanced Search Technique for Detect, Locate, and Track for Pedestrian-based Search
Award/Contract Number HSHQDC-12-C-00087
Abstract

Physical Sciences Inc. (PSI) proposes to develop a set of novel algorithms enabling enhanced pedestrian search capability against radioactive sources when using handheld, belt, or backpack mounted detector systems. The proposed approaches will result in a capability to localize the source. In addition, the source will be associated with visible objects to aid tracking and interdiction. The solution represents a low cost augmentation of personal radiation detectors (PRDs) through the use of advanced algorithms running on COTS mobile computing devices (MCDs) such as smartphones and tablets. PSI¿s approach will achieve initial source localization accuracy of 15' (azimuth) and 5 meters (range) in 30 seconds. They will achieve an accuracy of 3 meters in two dimensions after a two-minute sampling of radiation fields during wide area search missions. This capability will be demonstrated against a 1 mCi source at 20 meters using PRDs with a nominal sensitivity of > 250 cps/uSv.h. The Phase I effort will develop first-generation search algorithms which will be validated with synthetic data as well as data collected during field tests. PSI will perform a systematic trade study and testing of COTS components, including MCD products, man-portable radiation detectors and open source software libraries. The result of the trade study will be used to generate a component-level conceptual design for a prototype system with embedded search algorithms. The Phase II program will develop a TRL-5 capability to be integrated with commercially available PRDs. We envision adoption of PSI's technology developed under the proposed program as a key component of Federal, State and Local efforts to enhance the capabilities of new and fielded radiation detection products.

Company

Passport Systems, Inc
70 Treble Cove Road
N Billerica, MA 01862-2208

Proposal Information DNDOSBIR12-02-FP-001-PSPT - Integration of Inertial Measurement Data for Improved Localization and Tracking of Radiation Sources
Topic Information 12.1-002 - Embedding of Advanced Search Technique for Detect, Locate, and Track for Pedestrian-based Search
Award/Contract Number HSHQDC-12-C-00092
Abstract

spectra collected on handheld or personal RIID and SPRD devices.

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12.1-003

Company

Creative Electron
253 Pawnee St
San Marcos, CA 92078-2437

Proposal Information DNDOSBIR12-03-FP-001-CEIN - Smart Phone App for Radiological Threat Adjudication (SPARTA)
Topic Information 12.1-003 - Smart Phone App(s) for Radioisotope Identification Device (RIID) and Spectroscopic Personal Radiation Detector (SPRD) Reachback
Award/Contract Number HSHQDC-12-C-00102
Abstract

Proposed research will develop an innovative Smart Phone App for Radiological Threat Adjudication to support law enforcement and first responder adjudication of anomalous gamma ray spectra collected on handheld or personal RIID and SPRD devices.

Company

Spectral Labs Incorporated
12265 World Trade Drive
Suite E
San Diego, CA 92128-3771

Proposal Information DNDOSBIR12-03-FP-001-SLI - RadMATE - a Mobile RAD/NUC Reachback App
Topic Information 12.1-003 - Smart Phone App(s) for Radioisotope Identification Device (RIID) and Spectroscopic Personal Radiation Detector (SPRD) Reachback
Award/Contract Number HSHQDC-12-C-00103
Abstract

The risk of an adversary mounting a Radiological or Nuclear (RAD/NUC) attack on the United States remains one of the greatest threats to our Nation. The Domestic Nuclear Detection Office (DNDO) has identified an opportunity for exploiting rapidly emerging Smart Phone technology as one of many tools to counter this threat by giving Law Enforcement Officers (LEOs) and Emergency Responders (ERs) support on their local Smart Phones or Tablets to significantly enhance their ability to properly adjudicate encounters with radiation sources. The classification of RAD/NUC threats is challenging because the terrestrial environment includes significant radiation background. This includes Naturally Occurring Radioactive Material (NORM) and many legal medical and industrial sources. Providing officers and responders with up to date support through an in hand Smart Phone or Tablet will optimize their defensive response throughout the Nation. The Smart Phone support will automate and standardize communications with centralized authorities. The benefits will include minimized burden on operators and eliminating the need for a specialized laptop computer with instrumentspecific Reachback software. SLI's proposed development of radMATE will combine all of these elements in a powerful software package to provide a user friendly Smart Phone App that is easily adaptive to individual agency requirements.

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12.1-004

Company

CapeSym, Inc.
6 Huron Drive
Suite 1B
Natick, MA 01760-1325

Proposal Information DNDOSBIR12-04-FP-001-CAPE - Defect Engineering of TlBr for Room Temperature Radiation Detection
Topic Information 12.1-004 - Thallium Bromide (TlBr) Crystal Modules for Room-Temperature Gamma Radiation Detection
Award/Contract Number HSHQDC-12-C-00099
Abstract

TlBr is a promising gamma radiation semiconductor detector material primarily due to its high Z component and high density. TlBr detectors, however, suffer from polarization at room temperature and degrade rapidly under applied bias. Polarization is associated with ionic conductivity in this material. This proposal is focused on controlling the point, chemical, and crystalline defects in TlBr to minimize ionic conduction, and thereby enable operation of this promising detector at room temperature.

Company

Radiation Monitoring Devices, Inc.
44 Hunt Street
Watertown, MA 02472-4699

Proposal Information DNDOSBIR12-04-FP-001-RMD - TIBr Spectrometers with Improved Long Term Stability at Room Temperature
Topic Information 12.1-004 - Thallium Bromide (TlBr) Crystal Modules for Room-Temperature Gamma Radiation Detection
Award/Contract Number HSHQDC-12-C-00111
Abstract

The ideal semiconductor detector for the nuclear non-proliferation application should have good energy resolution, high detection efficiency, compact size, light weight, easy portability, low power requirments and low cost. In the proposed effort, we plan to continue our development of thallium bromide (TIBr), a wide band gap semiconductor that recently has shown great promise as a gamma-ray detector material. In addition to high density (7.5 g/cm2), high atomic number constituents (81,35) and wide band gap (2.68 eV) the material melts congruently at a modest temperature (480¿C) and does not undergo a phase change as the crystal cools to room temperature, which allows use of melt-based crystal growth approaches to produce large volume TIBr crystals. The cubic crystal structure of TIBr also simplifies crystal growth and device processing. As a result of recent progress in purification, crystal growth and processing, TIBr detectors with mobility-lifetime products of mid 10^-3 cm2/V for electrons and mid 10^-4 cm2/V for holes has been achieved. This has enabled the development of TIBr gamma-ray spectrometers with thickness exceeding 1 cm. TIBr detectors fabricated in our lab have exhibited < 1% energy resolution (FWHM) at 662 keV with cooling and depth correction. To date, to obtain excellent long term performance of thick TIBr detector arrays, modest cooling (to ~-20 C) has been requied. We have demonstrated stable TIBr detector performance exceeding 9 months with the detector continuously biased and operated at ~18¿C. This level of cooling is easily achieved with thermoelectric cooler. Cooling however, does increase the power budget of a detector system. In addition to cooling as a method to obtain long term TIBr detector stability, research at RMD and elsewhere has shown that surgace processing, electrode materials and thermal annealing significantly influence the long term stability of TIBr detectors operated at room temperature. RMD and its affiliated research teams have demonstrated thin TIBr detectors with long term stability exceeing 50 days at room temperature. It is our goal in this program to further investigate the effects of surface processing, electrodes and annealing on long term stability of TIBr detectors operated at room temperature. In addition, doping will be investigated as a method for modifying ionic conductivity. Dr. Harry Tuller's group at the materials science department of MIT will collaborate with RMD on this aspect of the project. Ultimately our goal is to develop TIBr spectrometers that are stable for more than 1 year at room temperature. Such as efficient, high resolution detector will find applications in nuclear monitoring areas such as nuclear treaty verificiation, dafeguards, environmental monitoring, nuclear waste cleanup, and border security. Nuclear and particle physics as well as astrophysics are other fields of science were gamma-ray spectrometers are used. The developed detectors should have the following advantages: - Efficient detection of gamma-rays (better than CZT per unit volume - Energy resolution < 1% (FWHM) at 662 keV at room temperature - Lower cost than CZT-based system due to lower cost crystal growth

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12.1-005

Company

Radiation Monitoring Devices, Inc.
44 Hunt Street
Watertown, MA 02472-4699

Proposal Information DNDOSBIR12-05-FP-001-RMD - High Efficiency TlBr Gamma-Ray Detector Module
Topic Information 12.1-005 - Near-Room Temperature, Low-Cooling-Power Operation of a Large-Volume Thallium Bromide (TlBr) Crystal Detector
Award/Contract Number HSHQDC-12-C-00107
Abstract

The ideal semiconductor detector for nuclear monitoring should have good energy resolution, high detection efficiency, compact size, light weight, easy portability and low cost. In the proposed effort, we plan to develop a detector module for nuclear monitoring based on thallium bromide (TlBr), a wide band gap semiconductor that recently has shown great promise as a gamma-ray detector material. TlBr has a number of very promising properties. It has high density (7.5 g/cm3) and high atomic number constituents (81, 35), which promises high sensitivity. The electrical resistivity of the material is high (>1010 -cm) without deep level doping. Furthermore, the material melts congruently at a modest temperature (480 'C) and does not undergo a phase change as the crystal cools to room temperature, which allows use of melt-based crystal growth approaches such as Bridgman and Czochralski to produce large volume TlBr crystals. The cubic crystal structure of TlBr also simplifies crystal growth and device processing. As a result of recent progress in purification, crystal growth and processing, TlBr detectors with mobility-lifetime (6t) products of mid 10-3 cm2/V for electrons and mid 10-4 cm2/V for holes has been achieved. This has enabled the development of TlBr gamma-ray spectrometers with thickness exceeding 1 cm. In fact, TlBr detectors fabricated at RMD have exhibited < 1 % energy resolution (FWHM) at 662 keV upon depth correction. These detectors were cooled to -20'C to achieve stable operation. The goal of this Phase I project is to design a cooled, compact TlBr gamma-ray detector module using the 3-dimensional position-sensitive readout technology pioneered by the group at the University of Michigan. The key advancement is to develop a lower power charge sensing ASIC that can digitally sample the outputs of an array of preamplifiers. By sampling the preamplifier outputs, the induced charges on the detector electrodes can be obtained as a function of time, so that digital signal processing can be used to perform gamma-ray spectroscopy, to determine the depth of interaction of individual gamma-ray energy depositions, as well as to measure charge drift time, electric field distribution within TlBr and lifetimes of electrons and holes. The digital ASIC readout system will enable both fundamental research on TlBr detectors and practical operation to perform gamma-ray imaging and spectroscopy outside the laboratory. Since TlBr detectors can operate in a stable manner at -20'C, power consumption of the digital ASIC system should be minimized so that the system can be cooled to required temperature using Peltier coolers. Such an efficient, high resolution, 3-D position sensitive detector module will find application in nuclear monitoring areas such as nuclear treaty verification, safeguards, environmental monitoring, nuclear waste cleanup, and border security. Nuclear and particle physics as well as astrophysics are other fields of science were gamma-ray spectrometers are used. The developed detectors should have the following advantages: - Efficient detection of gamma-rays (better than CZT per unit volume) - Energy resolution < 1% (FWHM) at 662 keV - Lower cost than CZT-based system due to lower cost crystal growth

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12.1-007

Company

ArchSmart, LLC
13603 White Stone Court
Clifton, VA 20124-2400

Proposal Information DNDOSBIR12-07-FP-001-ARCH - Test & Evaluation Data Archival Repository (TEDAR)
Topic Information 12.1-007 - Versatile Data Archive and Interfacing System
Award/Contract Number HSHQDC-12-C-00101
Abstract

TEDAR is an intuitive archival database and interfacing system that will serve as a centralized repository for results from testing and evaluation (T&E), modeling and simulation (M&S), and other analysis events sponsored by Federal agencies and other organizations in large-scale evaluation and analysis of radiation/nuclear (RN) detection instruments and procedures. The TEDAR will provide a repository for T&E event data, M&S event data, and other analysis event data, consisting of very large amounts of processed and raw structured and unstructured detection device data collected by T&E and M&S events and analyses of these data. Authorized users will be able to search for and access these data collections and retrieve data relevant to their business needs, such as performing engineering analyses and studies. This combination of raw and processed data is crucial, for example, to any replay capability to enhance algorithm sensitivity supporting the pre-deployment evaluation of algorithm enhancements based on previously collected data. TEDAR will support a variety of T&E/M&S and analysis data users and provide access to T&E/M&S data sources providing essential support to engineering, acquisition, and operational decision-making. The TEDAR will also provide each data collection and analysis organization a standard interface for sharing T&E data and lessons learned. There are a number of significant issues that must be addressed and resolved with effective solutions to successfully provide the required capabilities. The Phase I effort will be focused on developing and demonstrating highly innovative solutions to these issues that involve: (1) developing TEDAR such that it is easily customizable to meet the varying needs of a broad range of government and commercial applications beyond the immediate needs of DNDO; (2) significantly reducing the potential Operations and Maintenance (O&M) costs for a large repository system such as represented by the DNDO requirements; (3) providing a very flexible and intuitive interface for the system users; (4) providing an effective and efficient search mechanism via a rich and comprehensive set of metadata that is integrated and linked across the many disparate data collections in the repository; and (5) protecting the T&E/M&S data collections from unauthorized access, change, or corruption. Phase I will include loading of T&E data collections made available by DNDO to support development and demonstration, with a functional repository, user interface, data search and retrieval capabilities, demonstrating the innovative solutions described in this proposal. In the six months of Phase I, ArchSmart will provide a powerful system baseline with innovative solutions to the key requirements of a T&E/M&S repository, providing full confidence that the follow-on Phase II effort will result in a cost-effective and high performance system for DNDO needs, and will be well-positioned for commercial exploitation.

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