A conceptual design for a neutrino producing facility has been developed based on a mercury jet target that interacts with a 24 GeV, 1 MW proton beam. The facility consists of a target region where pions and muons are produced, a crane hall, and hot cells for radioactive component handling. The major components include the target containment system, a high magnetic field target solenoid region, a beam absorber, a low-field solenoid decay channel, and steel and concrete radiation shielding. The design was based in part, on meeting a system operating availability of 10 7 sec/yr, and on remotely replacing lifelimited components that are exposed to neutron and gamma radiation damage.

A fast-wave ICRF antenna is being designed for Alcator C-Mod which is prototypical in many respects of the baseline launcher design for the Compact Ignition Tokamak (CIT). The C-Mod launcher has a single current strap, with a strap and cavity geometry very similar to one quadrant of the CIT launcher, which has four straps in a 2 by 2 configuration. The antenna fits entirely within an 8-in.-wide by 25-in.-long port and is radially movable over a distance of 15 cm. It will operate at a frequency of 80 MHz for pulse lengths up to 1 s, at a maximum power level of 2 MW, corresponding to a power flux of >1.5 kW/cm'. The antenna is an end-fed, double-loop configuration in which the current strap is grounded in the middle to provide mechanical support. The design includes a disruption support system that accommodates thermal expansion of the antenna box while supporting large disruption loads. It also includes a novel matching system consisting of an external resonant loop with two shunt capacitors serving as tuning/matching elements.

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The RIA fragmentation line requires a beam stop for the primary beam downstream of the first dipole magnet. The beam may consist of U, Ca, Sn, Kr, or O ions. with a variety of power densities. The configuration with highest power density is for the U beam, with a spot size of 3 cm x 3 cm and a total power of up to 300 kW. The mechanical design of the dump that meets these criteria consists of a 70 cm diameter aluminum wheel with water coolant channels. A hollow drive shaft supplies the coolant water and connects the wheel to an electrical motor located in an adjacent air space. The beam strikes the wheel along the outer perimeter and passes through a thin window of aluminum where 15% of its power is absorbed and the remainder of the beam is absorbed in flowing water behind the window. Rotation of the wheel at 400 RPM results in maximum aluminum temperatures below 100 °C and acceptably low thermal stresses of 3 ksi. Rotating the wheel also results in low radiation damage levels by spreading the damage out over the whole perimeter of the wheel. For some of the other beams, a stationary dump consisting of a thin aluminum window with water acting as a coolant and absorber appears to be feasible.

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