Maximum-likelihood deconvolution of TREAT hodoscope scan data
- Argonne National Lab., IL (United States)
Maximum-likelihood deconvolution increases the spatial resolution of hodoscope scan data. The fast-neutron hodoscope at the Transient Reactor Test Facility (TREAT) is used in a horizontal scan mode before and after test fuel relocation experiments. For a scan, the hodoscope collimator is stepped in small increments, and fuel counts are measured at each step for all 360 channels. Each channel corresponds to one slot in the collimator and an associated neutron counter. The scan is performed at very low reactor power, so no test fuel relocation occurs. The scan mode advantage is a higher test fuel spatial resolution than that of a stationary collimator. Even so, scan-mode, horizontal resolution of each channel is much larger than the width of the channel incremental scan step projected at the test fuel. Because of the point-source response function of a collimator channel, each point of the fuel source is counted at several adjacent steps in the scan.
- OSTI ID:
- 5884226
- Report Number(s):
- CONF-930601-; CODEN: TANSAO
- Journal Information:
- Transactions of the American Nuclear Society; (United States), Vol. 68; Conference: American Nuclear Society (ANS) annual meeting, San Diego, CA (United States), 20-24 Jun 1993; ISSN 0003-018X
- Country of Publication:
- United States
- Language:
- English
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FUEL ASSEMBLIES
COMPUTERIZED SIMULATION
TREAT REACTOR
DATA ACQUISITION
COUNTING TECHNIQUES
HODOSCOPES
MATHEMATICAL MODELS
NUCLEAR DATA COLLECTIONS
AIR COOLED REACTORS
ENRICHED URANIUM REACTORS
EXPERIMENTAL REACTORS
GAS COOLED REACTORS
GRAPHITE MODERATED REACTORS
HOMOGENEOUS REACTORS
REACTORS
RESEARCH AND TEST REACTORS
SIMULATION
SOLID HOMOGENEOUS REACTORS
TEST REACTORS
THERMAL REACTORS
220100* - Nuclear Reactor Technology- Theory & Calculation
220300 - Nuclear Reactor Technology- Fuel Elements