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Fission Chambers for In-Core Use CFUZ 53

Fission Chambers for In-Core Use CFUZ 53
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Fission Chambers for In-Core Use CFUZ 53 - 1

Product specification CFUZ53 Neutron detector 1,5mm diameter in-core fission chamber Application Features In-core measurements of flux range up to 5x1014 n.cm-2.s-1 at 350°C Sub-miniature watertight stainless steel structure Integral mineral insulated cable Nuclear characteristics at 20°C Sensitivity to thermal neutrons 1: Current mode 5x10-18 Neutron flux range 2: 2x1011 - 1014 Current mode Gamma sensitivity: max 7x10 Thermal neutrons 3 Gamma dose rate Exposure limits at 350°C: A/n.cm-2.s-1 -13 n.cm-2.s-1 A/Gy. h-1 20 max 1.5x10 max 107 n.cm-2 Gy.h-1 Notes. Electrical characteristics Unless otherwise stated, all characteristics are given at 20°C 4 Insulating resistance at 150V : Nominal at 20°C Detector +7m cable at 350°C Operating voltage: Nominal up to 350°C Maximum at 20°C Limit with no radiation Cable: Capacitance 5 Characteristic impedance 1 min 1012 8 min 10 Ω Ω 100 150 400 400 8 V V V pF/m Ω/m Materials: Sensitive layer: Case, electrodes Insulator Brazing Uranium enriched in 235U Mass Filling gas (pressure) Dimensions: Nominal diameter Detector length Overall length, on request 6 Sensitive length Cable: Type 7 External diameter Insulator Curvature radius 8 Connector: Type 9 Insulator Current mode operating range: the lower limit of the current mode operating range depends on the electronics (especially on the input amplifier) and on the signal / parasitic current ratio (parasitic current = leakage current + gamma current + α-current). The upper limit is depending both on the detector and electronics (loss of linearity). 3 Flux corresponding to a 10 % sensitivity of the detector. Stainless steel (Co<0.05 %) AI2O3 Copper >90% 0.9 mg.cm-2 Argon (at 110 kPa) 1.5 mm 50 mm max 30 m 10 mm 1 coax 1mm AI2O3 min 20mm 4 The insulating resistance measurement includes the α-current. 5 The capacitance of the detector alone (10 pF) is negligible compared with the capacitance of the cable. 6 Mechanical and physical characteristics Detector: Values depending on the characteristics and the calibration of the measurement equipment. 2 The overall length (detector + cable + connector) constitues the version code to be mentioned in the detector reference after the basic type number. For example CFUZ53/15 indicates a detector with a 15 m overall length. 7 Our "coax" cable is the 1 AcAc 10 referenced cable from Thermocoax. 8 This is the smallest curvature radius allowing one reversible deformation. 9 In order to avoid humidity penetration during storage, the connector is closed with a cap to be removed just before use. As a general rule, prevent any humidity penetration at the connection level (refer to "Instructions for use and handling" in the package). Other connector types are possible. To be required when ordering. 10 Including temperature increase due to gamma radiation (effective above 104 Gy.h-1). Which is similar to the gamma flux within the nuclear reactors. BNC male UG 260 D/U PTFE 05/02/2008

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Fission Chambers for In-Core Use CFUZ 53 - 2

Product specification Neutron detector CFUZ53 Outline (dimensions in mm) Max Limiting values 10 Operating temperature : Detector + cable Connector 350 °C 70°C The information furnished is believed to be accurate and reliable, but is not guaranteed and is subject to change without notice. No liability is assumed by PHOTONIS for its use. Performance data represents typical characteristics as individual product performance may vary. Customers should verify that they have the most current PHOTONIS product information before placing orders. No claims or warranties are made as to the application...

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Fission Chambers for In-Core Use CFUZ 53 2Pages

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Fission Chambers for In-Core Use CFUZ 53
2Pages