A sixteen channel peak sensing ADC for singles spectra in the FERA format

Journal Article · Sat Jun 01 04:00:00 EDT 1996 · IEEE Transactions on Nuclear Science

DOI:https://doi.org/10.1109/23.507170· OSTI ID:276480

Maier, M R; Ludewigt, B; Rossington, C; Yaver, H; Zaninovich, J ^[1]

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1. Lawrence Berkeley Lab., CA (United States). Engineering Div.

To read out multi-element small X-ray detectors for X-ray fluorescence applications with synchrotron radiation one needs the capability to record multiple singles spectra for each detector element at high rates. The authors have developed a sixteen channel 11 bit peak sensing ADC in a CAMAC module. They use the FERA readout bus to place the data into a commercially available histogramming module developed to generate multiple histograms from FERA ADCs. The sixteen channels digitize shaped pulses from the detectors without external gating. The digitizing time is 8 {micro}sec, the peak acquisition time is {ge}2 {micro}sec. The module contains a LIFO to permit block transfers in order to minimize dead times associated with the readout. There is a common CAMAC controlled analog threshold for noise suppression and a 16 bit mask to enable or disable individual ADCs. Differential nonlinearity is less than +8%/{minus}4%. A {gamma}-ray spectrum collected using this ADC is presented.

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 276480
• Report Number(s): CONF-951073--
• Journal Information: IEEE Transactions on Nuclear Science, Journal Name: IEEE Transactions on Nuclear Science Journal Issue: 3Pt2 Vol. 43; ISSN IETNAE; ISSN 0018-9499
• Country of Publication: United States
• Language: English

Related Subjects

44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
ANALOG SYSTEMS
ANALOG-TO-DIGITAL CONVERTERS
CAMAC SYSTEM
DESIGN
INTEGRATED CIRCUITS
READOUT SYSTEMS
SI SEMICONDUCTOR DETECTORS
X-RAY FLUORESCENCE ANALYSIS
X-RAY SPECTROMETERS