ABSTRACT
A focal plane detector system consisting of a vertical drift chamber, parallel plate avalanche counters, and an ionization chamber with segmented anodes has been installed in the Broad Range Spectrometer at the Holifield Facility at Oak Ridge. The focal plane detector system that Jim had been working on was for the Broad Range Spectrometer (BRS) at Oak Ridge. The detector spans about 35 cm along the focal plane with a vertical acceptance of 5 cm. The new detector system for the BRS has met or exceeded our original expectations. The successful commissioning of the BRS focal plane detector is the result of the efforts of many people. In addition, corrections for magnet aberrations, Time-of-flight pathlengths, and energy loss can be made to increase mass resolution and the usable solid angle of the BRS. The BRS consists of an Elbek dipole later modified by the addition of a vertically focusing quadrupole, that increased the maximum solid angle to 5 msr.
