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8. Update on Injector for Radioactive Ion Species 2 (IRIS2)
(B. A. Tatum, spokesperson)

A remarkable amount of work has been completed on the IRIS2 Project since the last newsletter report in February 2007. The HVAC for the target room was installed in April and is designed to maintain the room at a temperature at 70° F and the relative humidity at 50%. Most of the long lead-time major technical equipment items have been fabricated, received, and installed including the high voltage platform structures, high voltage conduits, and injector beamline magnets.

National Electrostatics Corporation (NEC) delivered the injector beamline platform structure in late June and the instrumentation platform structure in late August. The injector beamline magnet system manufactured by Sigma Phi was subsequently received and installed on the beamline platform. This system consists of a 25 degree pre-separator magnet that diverts the beam from the existing low energy analysis beamline, and a first stage mass separator which is made up of two 60 degree sector magnets. Four high voltage conduits were successfully assembled, potted, and tested by the HRIBF staff. These conduits consist of an aluminum pipe surrounded by an 18.5" x 8.5" x 16" polyethylene extrusion. The gap between the pipe OD and the polyethylene ID was filled by an elaborate process of standing the conduits on end and pumping RTV through the gap from bottom to top. All of the conduits were tested to +/-200kV and installed in the 9.5' thick concrete shielding wall between the target and instrumentation rooms, surrounded and supported by polyethylene laminations. The instrumentation platform, including dual 50kW motor-generator sets, was successfully installed and tested. Re-installation of the HPTL instrument racks, cables, and utilities is underway. Fixed and movable localized shielding around the target ion source has been fabricated and installed as has the remote handling system crane extension. Design has been completed and fabrication is underway for the transport beamline spherical electrostatic deflectors.

Installation activities will continue to be the primary focus during the remainder of FY2008, but now that the major items are installed we are beginning to deal with a wide array of detailed and time consuming tasks that include alignment, beamline assembly, utilities installation, testing, and commissioning. Due to Federal budget constraints, the Project will receive only $1,400k rather than $1,835k in FY2008. This shortfall, combined with a $400k shortfall in FY2007 means that the project completion date will be moved from March 1, 2009 to approximately July 1, 2009. At this time, however, the IRIS2 Project is on schedule and on budget.

Figure 8-1: Photos taken in October 2007 showing IRIS2 work in progress.

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