Comparison of HEU and LEU neutron spectra in irradiation facilities at the Oregon State TRIGA® Reactor

Schickler, Robert; Marcum, Wade R.; Reese, Steven

doi:10.1016/j.nucengdes.2013.05.004

Cited by 13 publications

(8 citation statements)

References 17 publications

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“…The CLOCIT is identical in construction to the CLICIT (Schickler et al 2013). It consists of two aluminium tubes: the inner tube has an outer diameter (OD) of 31.75 mm with a wall thickness of 1.47 mm.…”

Section: Technical Specificationsmentioning

confidence: 99%

The New CLOCIT Irradiation Facility for ⁴⁰Ar/³⁹Ar Geochronology: Characterisation, Comparison with CLICIT and Implications for High‐Precision Geochronology

Rutte

Becker

Deino

et al. 2018

Geostandard Geoanalytic Res

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The Cadmium‐Lined Outer‐Core Irradiation Tube (CLOCIT) is a new irradiation facility for 40Ar/39Ar geochronology at the Oregon State University TRIGA® reactor. We report fluence (i.e., time‐integrated flux) parameters from the first four CLOCIT irradiations and compare them with the existing Cadmium‐Lined Inner‐Core Irradiation Tube (CLICIT). CLOCIT provides an average neutron flux equivalent of 1.45–1.53 × 10−4 J h−1; about 55% of CLICIT. Radial fluence gradients were on the order of 0.2–4.2% cm−1. A planar fit of J‐values results in residuals in the range of uncertainty in the J‐value, but systematic deviations resolve a non‐planar component of the neutron flux field, which has also been observed in CLICIT. Axial neutron fluence gradients were 0.6–1% cm−1, compared with 0.7–1.6% cm−1 for the CLICIT. Production rate ratios of interfering reactions were (40Ar/39Ar)K = (4 ± 6) × 10−4 and (38Ar/39Ar)K = (1.208 ± 0.002) × 10−2, (36Ar/37Ar)Ca = (2.649 ± 0.014) × 10−4, (38Ar/37Ar)Ca = (3.33 ± 0.12) × 10−5 and (39Ar/37Ar)Ca = (9.1 ± 0.28) × 10−4, similar to the CLICIT values.

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Section: Technical Specificationsmentioning

confidence: 99%

The New CLOCIT Irradiation Facility for ⁴⁰Ar/³⁹Ar Geochronology: Characterisation, Comparison with CLICIT and Implications for High‐Precision Geochronology

Rutte

Becker

Deino

et al. 2018

Geostandard Geoanalytic Res

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show abstract

“…The CLOCIT is identical in construction to the CLICIT (Schickler et al, 2013). It consists of two 35 aluminium tubes: the inner tube has an outer diameter (OD) of 31.75 mm with a wall thickness of 36 1.47 mm.…”

Section: Technical Specifications 34mentioning

confidence: 99%

“…To minimize thermal neutron penetration into the irradiation facility, a 0.508 mm thick Cadmium 39 sleeve is wrapped around the outside of the inner aluminium tube and a disc of Cadmium is placed at 40 its bottom (Schickler et al, 2013). The facility allows irradiation of cylindrical packages with an OD of 41 22.86 mm and a height of 101.6 mm.…”

Section: Technical Specifications 34mentioning

confidence: 99%

“…An Monte Carlo n-particle (MCNP) transport model of the reactor was employed to identify a 43 position for CLOCIT that provides a high fast-neutron flux at an acceptable loss of reactivity with the 44 cadmium sleeve introduced (Schickler and Reese, 2017). Position F20 near the core periphery, but 45 still surrounded by fuel elements provides this compromise (Figure 1).…”

Section: Technical Specifications 34mentioning

confidence: 99%

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The new CLOCIT irradiation facility for 40Ar/39Ar geochronology: Characterization, comparison with CLICIT, and implications for high-precision geochronology

Rutte¹,

Becker²,

Deino³

et al. 2018

Preprint

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“…Conversion of TRIGA-fueled cylinder loaded with high enriched uranium (HEU) based fuels to MTR fuels type, newly done, is to use low enriched uranium (LEU) based fuels to meet the rules set by the IAEA [4][5][6]. Basuki et al has performed the initial calculation of TRIGA core using a plate type fuel with a configuration of 16 fuel and 4 control rod [7] and Anwar Ilmar Ramadhan has studied thermal-hydraulics aspects of the TRIGA research reactor using plate type fuel elements as replacement for cylinder fuel element [8].…”

Section: Introductionmentioning

confidence: 99%

Core Design TRIGA2000 Bandung Using U3Si2Al Fuel Element MTR Type

Pinem¹,

Surbakti²,

Sembiring³

2018

urania

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CORE DESIGN OF TRIGA2000 BANDUNG USING U 3 SI 2 /AL FUEL ELEMENT MTR TYPE. The TRIGA2000 Bandung reactor currently uses cylinders fuel type, but the fuel production has been discontinued. In order to operate continuously, it is planned that the TRIGA2000 reactor should change the fuel from cylinder type to U 3 Si 2 /Al MTR type since Indonesia has been able to produce such fuel element. In this research calculation of TRIGA2000 coreusing U 3 Si 2 /Al fuel MTR type of three different fuel densities has been done. This activity begins with performing neutron macroscopic cross section generation for all core materials as a function of temperature, burn up and xenon. The cross section generation was performed with the WIMSD5 code. The calculation of the core parameters were done with the Batan-FUEL code. Based on the calculation of neutronic parameters, there are three core configurations, i.e.core with 16 fuel elements and 4 control elements (Core 16/4), core with 14 fuel elements and 4 control elements (Core 14/4) and core with 12 fuel elements and 4 control elements (Core 12/4). The three cores meet the safety constraint but only the Core 16/4 that uses U3Si2/Al fuel with a density of 2.96 g/cm 3 . The maximum thermal neutron flux in the core center is 5.874×10 13 n/cm 2 s with core cycle length is 245 days at 2 MW. The results show that the TRIGA2000 core can be converted from cylinder type fuel to silicide MTR type. Keywords

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Comparison of HEU and LEU neutron spectra in irradiation facilities at the Oregon State TRIGA® Reactor

Cited by 13 publications

References 17 publications

The New CLOCIT Irradiation Facility for ⁴⁰Ar/³⁹Ar Geochronology: Characterisation, Comparison with CLICIT and Implications for High‐Precision Geochronology

The New CLOCIT Irradiation Facility for ⁴⁰Ar/³⁹Ar Geochronology: Characterisation, Comparison with CLICIT and Implications for High‐Precision Geochronology

The new CLOCIT irradiation facility for 40Ar/39Ar geochronology: Characterization, comparison with CLICIT, and implications for high-precision geochronology

Core Design TRIGA2000 Bandung Using U3Si2Al Fuel Element MTR Type

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Comparison of HEU and LEU neutron spectra in irradiation facilities at the Oregon State TRIGA® Reactor

Cited by 13 publications

References 17 publications

The New CLOCIT Irradiation Facility for 40Ar/39Ar Geochronology: Characterisation, Comparison with CLICIT and Implications for High‐Precision Geochronology

The New CLOCIT Irradiation Facility for 40Ar/39Ar Geochronology: Characterisation, Comparison with CLICIT and Implications for High‐Precision Geochronology

The new CLOCIT irradiation facility for 40Ar/39Ar geochronology: Characterization, comparison with CLICIT, and implications for high-precision geochronology

Core Design TRIGA2000 Bandung Using U3Si2Al Fuel Element MTR Type

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The New CLOCIT Irradiation Facility for ⁴⁰Ar/³⁹Ar Geochronology: Characterisation, Comparison with CLICIT and Implications for High‐Precision Geochronology

The New CLOCIT Irradiation Facility for ⁴⁰Ar/³⁹Ar Geochronology: Characterisation, Comparison with CLICIT and Implications for High‐Precision Geochronology