High Energy Physics Detectors and Instrumentation; A High Bandwidth LAPPD Anode

Award Information
Agency:
Department of Energy
Branch
n/a
Amount:
$999,998.65
Award Year:
2014
Program:
SBIR
Phase:
Phase II
Contract:
DE-SC0009706
Award Id:
n/a
Agency Tracking Number:
211655
Solicitation Year:
2014
Solicitation Topic Code:
37b
Solicitation Number:
DE-FOA-0001019
Small Business Information
2900 S Main St, Salt Lake City, UT, 84115-3516
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
Y
Duns:
87-065719
Principal Investigator:
Larry Sadwick
Dr.
(801) 975-7399
sadwick@innosystech.com
Business Contact:
Jennifer Hwu
Dr.
(801) 975-7399
hwu@innosystech.com
Research Institution:
Stub




Abstract
The development of large-area (m2) photodetectors with time resolutions of picoseconds (10-12 seconds) and submillimeter space resolutions would open new opportunities in collider detectors at the Energy Frontier, kaon and neutrino experiments at the Intensity Frontier, photon detection in detectors at the Cosmic Frontier, and applications with a large impact on societal issues such as low-dose-rate Time-Of -Flight Positron Emission Tomography (TOF-PET), and reactor/fissile material monitoring/detection for national security. The approach is by comparing sophisticated simulation to measurements of novel anode designs, validated by the similar comparison using the LAPPD baseline RF anode stripline design. Models of these anodes and the neighboring micro-channel plate structures and front-end coupling have been constructed in a proprietary 4- dimensional electromagnetic finite-difference time domain (FDTD) simulation code developed over 20 years by the small business. The simulations agree extremely well with measurements of the baseline LAPPD anodes. The overall objective is the development of: 1) anodes with bandwidths of 4-6 GHz and substantially reduced crosstalk, and 2) pad-based anodes allowing application-specific patterns. Models of the baseline LAPPD anode were created in the FDTD simulation framework, and validated by comparison to measurements. The factors governing the analog bandwidth limit and cross-talk were identified from the simulation. New designs have been proposed and simulated that show improved analog bandwidth by factors of 3 or more, with substantially reduced cross-talk. The plans for Phase II are: 1) to construct, simulate, and measure prototypes of the new designs. 2) working closely with the proponents to optimize designs for collider, PET, and high-occupancy neutrino detectors, and 3) to integrate optimized designs into the LAPPD package for commercial production. Commercial Applications and Other Benefits: The availability of large-area photodetectors with excellent time and space resolution would be transformational in scientific, medical, and security markets. If successful, the work proposed here makes application-specific optimization for lower cost much easier. A beneficial side-effect is to broaden the market for large-scale applications in the medical and security fields, lowering the unit cost for scientific applications.

* information listed above is at the time of submission.

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