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Specialized Targets for Nuclear Physics Research

Description:

Grant applications are sought to develop specialized targets, including: Polarized (with nuclear spins aligned) high-density gas or solid targets; Systems and components for frozen-spin active (scintillating) targets; Systems and components associated with liquid, gaseous, and solid targets capable of high power dissipation when high-intensity, low-emittance charged-particle beams are used; Very thin windows (<100 micrograms-cm2 and-or 50% transmission of 500 eV X-rays) for gaseous detectors, for the measurement of low-energy ions; and A positron-production target capable of converting hundreds of kilowatts of electron beam power (10 MeV at 10 mA) over a sufficiently short distance to allow for the escape of the produced positrons. Of particular interest would be moving and-or cooled high-Z targets of uniform, stable thickness (2-8 mm), which may be immersed in a 0.5-1.0 T axial magnetic field. Grant applications also are sought to develop the technologies and sub-systems for the targets required at high-power, rare isotope beam facilities that use heavy ion drivers for rare isotope production. Targets for heavy ion fragmentation and in-flight separation are required that are made of low-Z materials and that can withstand very high power densities and are tolerant to radiation. Interested parties should contact Dr. Wolfgang Mittig, NSCL-MSU Finally, grant applications are sought to develop techniques for: Production of thin films (in the thickness range from a few g-cm2 to over 10 mg-cm2) for charge-state stripping in heavy-ion accelerators; and Preparation of targets of radioisotopes, with half-lives in the range of hours, to be used off-line in both neutron-induced and charged-particle-induced experiments.
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