The NSLS 100 element solid state array detector
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 ... continued below
Pages: (17 p)
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- United States. Department of Energy. DOE; USDOE, Washington, DC (United States)
Brookhaven National Laboratory
Place of Publication: Upton, New York
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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.
Pages: (17 p)
OSTI; NTIS; GPO Dep.
- Absorption Spectroscopy
- Analog-To-Digital Converters
- Background Noise
- Computerized Control Systems
- Control Systems
- Cyclic Accelerators
- Electrical Equipment
- Electromagnetic Radiation
- Electronic Equipment
- Measuring Instruments
- Multi-Channel Analyzers
- On-Line Control Systems
- On-Line Systems
- Pulse Analyzers
- Radiation Detection
- Radiation Detectors
- Radiation Sources
- Semiconductor Detectors
- Si Semiconductor Detectors
- Synchrotron Radiation
- Synchrotron Radiation Sources
- Synchrotrons 440100* -- Radiation Instrumentation
- X-Ray Detection
STI Subject Categories
- 7. national conference and exhibition on synchrotron radiation instrumentation, Baton Rouge, LA (United States), 28-31 Oct 1991
Unique identifying numbers for this article in the Digital Library or other systems.
- Other: DE92014477
- Report No.: BNL-47475
- Report No.: CONF-9110146--18
- Grant Number: AC02-76CH00016
- Office of Scientific & Technical Information Report Number: 5181373
- Archival Resource Key: ark:/67531/metadc1057703
This article is part of the following collection of related materials.
Office of Scientific & Technical Information Technical Reports
Reports, articles and other documents harvested from the Office of Scientific and Technical Information.
Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.
Dates and time periods associated with this article.
- January 1, 1991
Added to The UNT Digital Library
- Jan. 22, 2018, 7:23 a.m.
Description Last Updated
- Feb. 5, 2018, 1:30 p.m.
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Furenlid, L.R.; Kraner, H.W.; Rogers, L.C.; Stephani, D.; Beuttenmuller, R.H.; Beren, J. (Brookhaven National Lab., Upton, NY (United States)) et al. The NSLS 100 element solid state array detector, article, January 1, 1991; Upton, New York. (https://digital.library.unt.edu/ark:/67531/metadc1057703/: accessed March 24, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.