Disruption Mitigation System Developments and Design for ITER

Conference · Tue Sep 01 00:00:00 EDT 2015

DOI:https://doi.org/10.13182/FST14-926· OSTI ID:1424502

Baylor, Larry  ^[1]; Barbier, Charlotte  ^[1]; Ezell, Nora ^[1]; Combs, Stephen Kirk  ^[1]; Fisher, Paul ^[1]; Kiss, Gabor ^[2]; Ericson, Nance  ^[1]; Wilgen, John B. ^[1]; Maruyama, So ^[2]; Meitner, Steven  ^[1]; Lyttle, Mark ^[1]; Rasmussen, David ^[1]; Carmichael, Justin R. ^[1]; Smith, Stephen Fulton ^[1]

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1. ORNL
2. ITER Organization, Cadarache, France

A disruption mitigation system (DMS) is under design for ITER to inject sufficient material deeply into the plasma for rapid plasma thermal shutdown and collisional suppression of any resulting runaway electrons. Progress on the development and design of both a shattered pellet injector (SPI) that produces large solid cryogenic pellets to provide reliable deep penetration of material and a fast opening high flow rate gas valve for massive gas injection (MGI) is presented. Cryogenic pellets of deuterium and neon up to 25 mm in size have been formed and accelerated with a prototype injector and a full scale prototype MGI valve is now in testing. Implications of the design with respect to response time and reliability at the proposed injector locations on ITER are discussed.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1424502
• Resource Relation: Journal Volume: 68; Journal Issue: 2; Conference: 21st Topical Meeting on the Technology of Fusion Energy (TOFE 2014) - Anaheim, California, United States of America - 11/10/2014 5:00:00 AM-11/13/2014 5:00:00 AM
• Country of Publication: United States
• Language: English