29th Symposium on Fusion Technology (SOFT 2016)

P3.057 Overview of the Loom Electrical Vacuum Interface preliminary design in ITER Equatorial Port #17

7 Sep 2016, 11:00

1h 20m

Foyer 2A (2nd floor), 3A (3rd floor) (Prague Congress Centre)

Board: 57

Poster D. Diagnostics, Data Acquisition and Remote Participation P3 Poster session

Speaker

Jean-Marc Drevon (Bertin Systèmes Instrumentation)

Description

ITER will have a set of 45 diagnostics to ensure controlled operation. Many of them are integrated in the ITER ports. Housed in generic structures, this modular integration is designed to help diagnostics withstanding the plasma loads whilst complying with the French regulations. Now that the Domestic Agencies and ITER Organization are developing the preliminary or even final designs of the diagnostics on ITER, it is important to provide the designers with a flexible infrastructure to allow the efficient development of the diagnostic systems. Interface requirements have been defined for common features in the aim of sharing the designs in order to minimize the effort of developing very similar components whose qualification to ITER requirements is expensive and schedule constrained. Recent progress has been made in the definition of a generic concept of an electrical assembly ensuring in-vessel connections to the Diagnostic Shield Modules hosting the front end components. A remote handling compatible generic design of an electrical assembly that can be adapted for each of the Diagnostics equatorial and upper Port Plugs has been defined. The associated electrical feedthrough so called Loom Electrical Vacuum Interface (LEVI) has been designed addressing the severe constraints of high vacuum compatibility and compliance to nuclear safety rules and remote handling compatibility. A solution using mineral insulated cables brazed on a double confined stainless steel structure will be presented and discussed. A particular port, the equatorial port 17, is used to illustrate the concept and the main challenges to overcome.