Radiation analysis of the CIT (Compact Ignition Tokamak) pellet injector system and its impact on personnel access

Conference · Thu Jan 01 04:00:00 EST 1987

OSTI ID:6674862

Selcow, E C; Stevens, P N; Gomes, I C; Gomes, L M

Conceptual design of the Compact Ignition Tokamak (CIT) is near completion. This short-pulse ignition experiment is planned to follow the operations of the Tokamak Fusion Test Reactor (TFTR) at the Princeton Plasma Physics Laboratory. The high neutron wall loadings, /approximately/4-5 MW/m/sup 2/, associated with the operation of this device require that neutronics-related issues be considered in the overall system design. Radiation shielding is required for the protection of device components and personnel. A close-in igloo shield has been designed around the periphery of the tokamak structure, and the entire experiment is housed in a circular test cell facility with a radius of /approximately/12 m. The most critical radiation concern in the CIT design process relates to the numerous penetrations in the device. This paper discusses the impact of a major penetration on the design and operations of the CIT pellet injection system. The pellet injector is a major component, which has a line-of-sight penetration through the igloo and test cell wall. All current options for maintenance of the injector require personnel access. A nuclear analysis has been performed to determine the feasibility of hands-on access. Results indicate that personnel access to the pellet injector glovebox is possible. 10 refs., 3 figs., 3 tabs.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6674862
• Report Number(s): CONF-871007-108; ON: DE89001672
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700205* -- Fusion Power Plant Technology-- Fuel
Heating
& Injection Systems
700206 -- Fusion Power Plant Technology-- Environmental Aspects
CLOSED PLASMA DEVICES
COMPACT IGNITION TOKAMAK
EQUIPMENT
GLOVEBOXES
LABORATORY EQUIPMENT
PELLET INJECTION
POWER DENSITY
RADIATION PROTECTION
SHIELDING
THERMONUCLEAR DEVICES
THERMONUCLEAR REACTORS
TOKAMAK DEVICES
TOKAMAK TYPE REACTORS
WALL LOADING