Triaxial cable extensions & connectors
In severe operating conditions, and when the use of detectors with an integral cable is not preferred, an alternative is to use a triaxial mineral insulated cable extension connected to the detector.
Triaxial cable extensions & connectors
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Similar to coaxial cable extensions & connector but in triaxial configuration
| Basic type | MI Cable External diameter (mm) | Signal transmission | Connector type |
|---|---|---|---|
| EXT-HN | 6 | Pulse, fluctuation (Campbell) and current modes | HN |
Description
Such mineral insulated cable extensions are terminated by two adapted HN or specific triax-connectors (plugs or jacks). Triaxial cable extensions & connectors can work for pulse and current transmissions.
Custom triaxial cable extensions & connectors
By full control of the following processes, Photonis Nuclear Instrumentation can supply custom triaxial cable extensions & connectors with the highest quality and reliability levels
Adaptation to customer specific requirements.
Development of new triaxial cable extensions & connectors with our experienced R&D team.
Long term collaboration with the French Alternative Energies and Atomic Energy Commission / CEA (theoretical approach, modeling, qualification tests in research reactors.
Complete manufacturing process on site.
Support from all the Photonis Group activities, experience and knowledge.
Certifications & Quality Assurance programs adapted to the customer environment.
Technical support, applying our expertise in the design and manufacture of nuclear instruments to solve customer challenges.
Export control, as an Authorized Economic Operator, Photonis acts in accordance with the EU international regulations.
Examples of customization of standard parts
Mechanical interface with the equipment (Customized external dimensions, cable curvature radius).
Electrical characteristics (characteristic impedance, capacitance, line resistance, attenuation, transfer impedance).
Cable insulator material (Al2O3, MgO, SiO2).
LOCA (Loss Of Coolant Accident) and post-LOCA protection.
Ruggedized structure for harsh environment (radiation, temperature, humidity, mechanical stress).
Coaxial Mineral insulated connector type (HN, BNC, BNC HT or specific). Reinforced types are available for high pressure, high temperature conditions.
External mechanical and/or electrical protection around the cable and/or the connectors (folded spiral seam, radiation resistant heat-shrink sleeve).
Connectors can also be delivered in mating connector or tight feedthrough versions.
Main features
Structure configuration: Triaxial (one central conductor, two external envelopes).
Cable materials: Multi metallic cable envelope for high immunity to electromagnetic parasitic signals. Magnesia (MgO) cable insulator.
Connector Material: Stainless steel and Nickel structure and high-grade Alumina (Al2O3) insulator.
References
The French Atomic Energy Commission (CEA) selected Photonis as its technological partner for a co-operative development of neutron and gamma detectors when the French nuclear power program took shape in the sixties.
Our references
PWR – Safety critical signal transmission in reactor building – Mineral insulated cable extension – EXT-HN - France
Documentation
Brochure/Leaflet
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