Abstract
We present an ASIC for a 3He gas detector to be used in small angle neutron scattering experiments at the Spallation Neutron Source in Oak Ridge. The ASIC is composed of 64 channels with low noise charge amplification, filtering, timing and amplitude measurement circuits, where an innovative current-mode peak-detector and digitizer (PDAD) is adopted. The proposed PDAD provides at the same time peak detection and A/D conversion in real time, at low power, and without requiring a clock signal. The channels share an efficient data sparsification and derandomization scheme, a 30-bit 256 deep FIFO, and low voltage differential signaling.
Original language | English |
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Pages (from-to) | 541-548 |
Number of pages | 8 |
Journal | IEEE Transactions on Nuclear Science |
Volume | 54 |
Issue number | 3 |
DOIs | |
State | Published - Jun 2007 |
Funding
Manuscript received November 16, 2006; revised February 16, 2007. This work was supported by the Office of Basic Energy Sciences of the U.S. Department of Energy and has been authored by employees of Brookhaven Science Associates, LLC under Contract DE-AC02-98CH10886 with the U.S. Department of Energy.
Keywords
- ADC
- ASIC
- Gas detector
- Peak detector