The NSLS 100 element solid state array detector

Conference · Tue Jan 01 00:00:00 EST 1991

OSTI ID:5181373

Furenlid, L R; Kraner, H W; Rogers, L C; Stephani, D; Beuttenmuller, R H; Beren, J ^[1]; Cramer, S P ^[2]

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1. Brookhaven National Lab., Upton, NY (United States)
2. California Univ., Davis, CA (United States). Dept. of Applied Science

X-ray absorption studies of dilute samples require fluorescence detection techniques. Since signal-to-noise ratios are governed by the ratio of fluorescent to scattered photons counted by a detector, solid state detectors which can discriminate between fluorescence and scattered photons have become the instruments of choice for trace element measurements. Commercially available 13 element Ge array detectors permitting total count rates < 500,000 counts per second are now in routine use. Since x-ray absorption beamlines at high brightness synchrotron sources can already illuminate most dilute samples with enough flux to saturate the current generation of solid state detectors, the development of next-generation instruments with significantly higher total count rates is essential. We present the design and current status of the 100 element Si array detector being developed in a collaboration between the NSLS and the Instrumentation Division at Brookhaven National Laboratory. The detecting array consists of a 10*10 matrix of 4mm * 4mm elements laid out on a single piece of ultra-high purity silicon mounted at the front end of a liquid nitrogen dewar assembly. A matrix of charge sensitive integrating preamplifiers feed signals to an array of shaping amplifiers, single channel analyzers, and scalers. An electronic switch, delay amplifier, linear gate, digital scope, peak sensing A to D converter, and histogramming memory module provide for complete diagnostics and channel calibration. The entire instrument is controlled by a LabView 2 application on a MacII ci; the software also provides full control over beamline hardware and performs the data collection.

• Research Organization: Brookhaven National Lab., Upton, NY (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5181373
• Report Number(s): BNL-47475; CONF-9110146-18; ON: DE92014477
• Resource Relation: Conference: 7. national conference and exhibition on synchrotron radiation instrumentation, Baton Rouge, LA (United States), 28-31 Oct 1991
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
43 PARTICLE ACCELERATORS
SI SEMICONDUCTOR DETECTORS
DESIGN
ABSORPTION SPECTROSCOPY
ANALOG-TO-DIGITAL CONVERTERS
BACKGROUND NOISE
COMPUTERIZED CONTROL SYSTEMS
FLUORESCENCE
MULTI-CHANNEL ANALYZERS
NSLS
PREAMPLIFIERS
SCALERS
SCATTERING
SENSITIVITY
SILICON
SWITCHES
SYNCHROTRON RADIATION
X-RAY DETECTION
ACCELERATORS
AMPLIFIERS
BREMSSTRAHLUNG
CONTROL SYSTEMS
CYCLIC ACCELERATORS
DETECTION
ELECTRICAL EQUIPMENT
ELECTROMAGNETIC RADIATION
ELECTRONIC EQUIPMENT
ELEMENTS
EQUIPMENT
LUMINESCENCE
MEASURING INSTRUMENTS
NOISE
ON-LINE CONTROL SYSTEMS
ON-LINE SYSTEMS
PULSE ANALYZERS
RADIATION DETECTION
RADIATION DETECTORS
RADIATION SOURCES
RADIATIONS
SEMICONDUCTOR DETECTORS
SEMIMETALS
SPECTROSCOPY
SYNCHROTRON RADIATION SOURCES
SYNCHROTRONS
440100* - Radiation Instrumentation
430303 - Particle Accelerators- Experimental Facilities &amp; Equipment
430400 - Particle Accelerators- Storage Rings