---------- DTRA ----------

13 Phase I Selections from the 07.1 Solicitation

(In Topic Number Order)
GENESIC SEMICONDUCTOR, INC.
25050 Riding PlazaSuite 130-801
South Riding, VA 20152
Phone:
PI:
Topic#:
(571) 265-7535
Dr. Ranbir Singh
DTRA 07-001      Awarded: 31MAY07
Title:SiC Arrayed Detectors for Fast Neutron Detection
Abstract:Fast neutron radiography is targeted towards detection of explosives, contraband and for the screening of cargo. The energy discrimination of conventional neutron detection methods is poor and the presence of a gamma-ray background is a major source of interference. In this program, GeneSiC Semiconductor proposes the development of unique and innovative Silicon Carbide neutron detectors using thick ionization layers offer fast response times, invariance to large gamma fluences, and room/high temperature operation. These designs promise optimum neutron response & energy resolution, high speed and large areas. Using a scientific design of experiments methodology, optimization of detector design will be conducted to realize large detection volume, small capacitances, and reasonable bias voltages. A comprehensive study of epitaxial structures, layout designs, termination designs, fabrication methods will be conducted. The fabricated detectors will undergo a detailed testing regimen quantifying the benefits of the developed technology. The degradation of detectors under large gamma fluences will be characterized. This study will pave the way for the realization of large area arrayed SiC neutron detectors in the Phase II of the program with an effective commercialization through partnership with technology and systems integrators, some of who are subcontractors/partners in this program.

RADIATION MONITORING DEVICES, INC.
44 Hunt Street
Watertown, MA 02472
Phone:
PI:
Topic#:
(617) 668-6922
Dr. Edgar Van Loef
DTRA 07-001      Awarded: 30MAY07
Title:Scintillation Detector with Fast-Neutron/Gamma ray Discrimination
Abstract:The proliferation of weapons of mass destruction such as nuclear missiles and "dirty bombs" are a serious threat in the world today and especially to the well-being of the United States. Preventing the spread of these nuclear weapons has reached a state of heightened urgency in recent years, more so since the events on September 11, 2001 and its aftermath. The presence of nuclear weapons can be detected on the basis of the gamma ray and neutron signatures of radioactive isotopes used in nuclear weapons, as for example uranium and plutonium. At present, there is an urgent need for an efficient, solid state detection system that allows for the detection of fast and slow neutrons with the ability to discriminate between neutron with energies En > 1 eV and gamma ray events. Discrimination is critical because gamma-rays are a very common background in a neutron detection environment during the monitoring of special nuclear materials (SNM). The goal of the proposed effort is to investigate new scintillators that are capable of efficient thermal and fast neutron detection while providing effective neutron/gamma-ray discrimination. The discrimination between neutron and gamma-ray events may be based on pulse shape as well as pulse height analysis.

MICHIGAN AEROSPACE CORP.
1777 Highland DriveSuite B
Ann Arbor, MI 48108
Phone:
PI:
Topic#:
(734) 975-8777
Ms. Dominique Fourguette
DTRA 07-002      Awarded: 07JUN07
Title:Real-Time Portable Neutron Spectroscopy
Abstract:One of the critical gaps in homeland security is the inability to efficiently detect and identify kilogram-size samples of Special Nuclear Materials (SNM, uranium and transuranic elements). Unlike other forms of radiation produced by SNM (e.g. gamma rays), penetrating neutron emission is unique to fissionable material and difficult to obscure with passive shielding. The current state-of-the-art in neutron detection is not suitable for field applications. Michigan Aerospace Corporation, in collaboration with Professor James Ryan and his group at University of New Hampshire, proposes to develop a compact, light weight neutron spectroscopy instrument. This instrument, based on the successful Fast Neutron Imaging Telescope prototype, will be sensitive to neutron energies < 1 Mev, and will have a response time suitable for identification of materials both in passive and active interrogation. The proposed instrument is based on the Fast Neutron Imaging Telescope (FNIT), a Position Sensitive Plastic Scintillator Detector conceived and developed at the University of New Hampshire for the Inner Heliospheric Sentinels program. Such a neutron imaging device is highly suitable for locating SNM by detecting fission neutrons and reconstructing images of their source. The instrument will be able to locate a neutron point source and report the fission spectrum.

ALAMEDA APPLIED SCIENCES CORP.
626 Whitney Street
San Leandro, CA 94577
Phone:
PI:
Topic#:
(510) 483-4156
Dr. Brian Bures
DTRA 07-003      Awarded: 06JUN07
Title:Active Interrogation for Special Nuclear Materials (SNM) Detection Experimental Study
Abstract:AASC's objective is to mitigate the risk of implementing an active interrogation system based upon time of flight measurements. A fast pulse neutron source is a critical component of a time of flight system even at large stand off. This program directly addresses means to control the probe radiation pulse in a fast neutron source. In some concept of operations, pulse width is a larger concern than overall neutron yield per pulse.

RADIATION MONITORING DEVICES, INC.
44 Hunt Street
Watertown, MA 02472
Phone:
PI:
Topic#:
(617) 668-6800
Dr. Michael Squillante
DTRA 07-003      Awarded: 14JUN07
Title:Active Interrogation System for Detecting and Identifying SNM
Abstract:Active interrogation holds the most promise for detecting heavily shielded materials at a distance. This effort will use pulsed neutron excitation of fission reactions in the target being inspected in conjunction with an imaging detector. Special nuclear material (SNM) that is present will undergo fission reactions that generate prompt and delayed neutrons which will be emitted by the target. The presence of emitted neutrons will indicate that SNM may be present. Recording the time course of the delayed neutron emissions will provide additional information about the target identity. We will examine the design and construction of a complete active interrogation system including a compact neutron generator and fast neutron imaging detector. Imaging offers several significant advantages: interrogating the entire target simultaneously, improving the signal-to-background ratio, and distinguishing between real threats and false alarms. The system will be based on an RF-Plasma neutron generator design from Lawrence Berkeley National Laboratory (LBNL) and the fast neutron imaging telescope (FNIT) being developed at the University of New Hampshire.

BOSTON APPLIED TECHNOLOGIES, INC.
6F Gill Street
Woburn, MA 01801
Phone:
PI:
Topic#:
(781) 935-2800
Ms. Yanyun Wang
DTRA 07-004      Awarded: 05JUN07
Title:Nanocomposite Scintillator for Detection of Nuclear Radiation
Abstract:Recent advances in scintillator materials research have resulted in the development of lanthanum halides detectors. These detectors offer improved energy resolution, faster emission and excellent temperature dependency and linearity characteristics. However, the lanthanum halides crystals have not yet been grown to preferred large sizes. Moreover, this material possesses a fatal drawback of being high hygroscopic, which makes its processing and handling difficult. In this project, Boston Applied Technologies, Inc. (BATi) proposes to synthesize a transparent nanocomposite of lanthanum halides scintillator materials. A salted sol-gel (SSG) method, which has been developed recently for producing nano-phosphors in our lab, will be used to synthesize the nanocomposites. This novel lanthanum halides nanocomposite scintillator will provide a low-cost, large-volume, high performance scintillators to meet the DoD requirement for field ruggedness and adverse operating environments.

CERMET, INC.
1019 Collier RoadSuite C1
Atlanta, GA 30318
Phone:
PI:
Topic#:
(404) 351-0005
Dr. Varatharajan Rengarajan
DTRA 07-004      Awarded: 25MAY07
Title:High Efficient Photodetectors
Abstract:The goal of this effort is to demonstrate an high efficient photodetector to replace the conventional photo multiplier tubes (PMT) in gamma radiation detection process. In the proposed effort. Cermet will grow and fabricate ZnO based photodetectors for the detector of scintillated light in the wavelength region between 340 and 430nm. The proposed technology will bring an improved, high efficient photodetector to the market place

RADIATION MONITORING DEVICES, INC.
44 Hunt Street
Watertown, MA 02472
Phone:
PI:
Topic#:
(617) 668-6800
Dr. Vivek Nagarkar
DTRA 07-004      Awarded: 14JUN07
Title:Improvements in Scintillation Technology for Detection of Nuclear Radiation
Abstract:High-resolution scintillation crystals and crystal arrays are important components of current and future handheld and arrayed detectors (used for DOD applications) and scintillation spectrometers (routinely used in high energy physics research, medical imaging, diffraction, homeland security, nuclear waste clean-up, nuclear treaty verification and safeguards, and geological exploration). Unfortunately, the properties of current scintillators often limit the performance of such systems, so in order to fulfill the needs of their many exciting and demanding applications, advances in scintillator technology are necessary. Specifically, scintillators that simultaneously produce high light output, high stopping efficiency, fast response, high energy and timing resolution, good proportionality, and low cost are needed. We therefore propose to develop a novel semiconductor scintillator that promises to produce up to a three-fold increase in light yield compared to some of today's brightest scintillators, high gamma ray absorption, fast decay without afterglow, emission in the wavelength range most suitable for readout sensors, and orders of magnitude higher radiation resistance than current scintillators. For large volume, cost effective manufacturing, powder consolidation techniques will be used to fabricate this transparent optical ceramic scintillator. Our Phase I goals include demonstrating the feasibility of growing this ceramic and characterizing its performance relative to current state-of-the-art scintillators.

MICROELECTRONICS RESEARCH DEVELOPMENT CORP.
4775 Centennial Avenue, Suite 130
Colorado Springs, CO 80919
Phone:
PI:
Topic#:
(505) 507-0542
Mrs. David G. Mavis
DTRA 07-005      Awarded: 23MAY07
Title:SEE Modeling and Mitigation in Ultra-Deep Submicron Microelectronics
Abstract:As technology feature sizes decrease, single event upset (SEU), digital single event transient (DSET), and multiple bit upset (MBU) effects dominate the radiation response of microcircuits. Recent test circuits and test methods have quantified the pulse widths of DSETs generated from heavy-ion strikes on critical microcircuit nodes. These pulse widths have proven to be much larger than previously thought, which substantiates the importance of DSET induced errors to the soft error rate (SER) of modern microcircuits. We apply new circuit SEE modeling approaches which couple the circuit response to the charge collection mechanisms. Our approach uses standard SPICE circuit elements, is easily calibrated, and runs as fast as conventional current injection simulations. This enables efficient and cost effective SEE simulation of advanced microcircuits. New mitigation approaches are proposed to improve the heavy-ion response of ultra-deep submicron integrated circuits. These approaches are minimally invasive to existing fabrication processes and can be transparently applied to existing bulk CMOS microcircuit layouts. The proposed methods include process modifications, design hardening techniques, and substrate engineering approaches.

ORORA DESIGN TECHNOLOGIES, INC.
17371 NE 67th CourtSuite 205
Redmond, WA 98052
Phone:
PI:
Topic#:
(425) 702-9196
Mr. Jeremy Popp
DTRA 07-005      Awarded: 06JUN07
Title:The Characterization and Mitigation of Single Event Effects in Ultra-Deep Submicron (< 90nm) Microelectronics
Abstract:Orora Design Technologies proposes the development of minimally invasive circuit design-based methods to mitigate single event effects (SEEs) in next generation Ultra-DSM CMOS (<90nm) circuits for space-based applications. Novel robust circuit modeling and simulation techniques will be developed and demonstrated which will allow circuit designers to quickly identify sensitive SEE circuitry, characterize the SEE sensitivity, and automatically insert the minimally invasive SEE mitigation into complex circuit designs, and then optimize the performance of an ultra-DSM circuit while meeting the radiation-hardness requirements with the minimal area and performance overhead. The SEE design-based mitigation methods, as well as enabling modeling, simulation and optimization techniques, will be implemented as electronic design automation (EDA) tools integrated into industry standard design environments with automated design flows. The proposed tool development will be driven by, and validated against, several 90nm and below real circuits from a collaborative project with Boeing Solid-State Electronics Development for satellite systems.

SA PHOTONICS
650 5th StreetSuite 505
San Francisco, CA 94107
Phone:
PI:
Topic#:
(415) 977-0553
Mr. James F. Coward
DTRA 07-007      Awarded: 06JUN07
Title:Sensor for Electromagnetic Threats
Abstract:SA Photonics is pleased to propose a program to develop an electromagnetic threat warning sensor. The innovative electro-optic high power microwave sensor boosts 10x sensitivity compared to standard LiNbO3 sensors and has extremely high damage threshold. The sensor system consists of a series of multi-electrode array probes, wideband optical pickup circuitry and a sophisticated digital processing unit. A fiber optic link between the sensors and the pickup circuitry/processing unit allows the placement of the electronics at heavily shielded environment to for enhanced reliability. The sensor array not only ensures low false alarm rate but also provides angle of arrival estimation of the incoming electromagnetic threats.

INTELLIGENT FIBER OPTIC SYSTEMS CORP.
2363 Calle Del Mundo
Santa Clara, CA 95054
Phone:
PI:
Topic#:
(408) 565-9004
Dr. Behzad Moslehi
DTRA 07-010      Awarded: 29MAY07
Title:Measuring Residual Concrete Strength After Penetration and Blast
Abstract:Intelligent Fiber Optic Systems (IFOS) proposes to investigate the feasibility of developing an innovative high-speed low-cost real-time monitoring solution based on embedding a Fiber Bragg Grating (FBG) sensor network in reinforced concrete. The concrete condition can be directly measured and remotely monitored in real time through a fiber link. The primary objective in Phase I is to determine the feasibility of employing embedded FBG sensor network for monitoring the breakup of reinforced concrete (RC) during weapon impacts and for monitoring the real time progression of target penetrators within slabs during strikes. IFOS will also demonstrate that these FBG sensors can survive through initial impact while yielding meaningful information up to the very last microsecond before total destruction. This final capability will allow proper data analysis to predict the residual strength of target structures in relation to strain measurements during and after impact. Even when the slab is heavily damaged, the broken fiber sensor array can be separately spliced and reconnected to yield useful information cost-effectively. IFOS proposes to develop smart algorithms to be programmed into the monitoring process making for corrections and determining given penetration depths for varying structure densities according to real-time data.

WEIDLINGER ASSOC., INC.
375 Hudson St FL 12
New York, NY 10014
Phone:
PI:
Topic#:
(650) 230-0331
Mr. David Vaughan
DTRA 07-011      Awarded: 30MAY07
Title:Novel Methods to Measure Penetrator Dynamics in Multi-Layer Geometries
Abstract:This proposal describes an approach to meeting DTRA's goals of improving sensor technology for penetrating weapons. Weidlinger Associates Inc. (WAI) has significant experience in the design and use of ultrasound technologies for a broad range of end-use applications. WAI is also familiar with the terradynamic issues related to penetrators and the targeting aspects through its work in Hard Target Defeat projects over the last ten years. WAI proposes to combine its expertise in impact and penetration dynamics and in ultrasonic/acoustic sensors design to develop an effective acoustic sensor design for penetrating weapons during this Phase I effort. The sensor will provide measurement data that will contribute to (a) distinquishing the acoustic signature of different materials during penetration, (b) quantifying the operating environment (frequencies, noise levels, etc.) of sensors onboard a penetrator and (c) guide improvements in the acoustic sensor's design in later development phases.