Author/Authors :
Scraggs، نويسنده , , H.C. and Pearson، نويسنده , , C.J. and Hackman، نويسنده , , G. and Smith، نويسنده , , M.B. and Austin، نويسنده , , R.A.E. and Ball، نويسنده , , G.C. and Boston، نويسنده , , A.J. and Bricault، نويسنده , , P. and Chakrawarthy، نويسنده , , R.S. and Churchman، نويسنده , , R. and Cowan، نويسنده , , N. and Cronkhite، نويسنده , , G. T. Cunningham، نويسنده , , E.S. and Drake، نويسنده , , T.E. and Finlay، نويسنده , , P، نويسنده ,
Abstract :
The TRIUMF-ISAC Gamma-Ray Escape-Suppressed Spectrometer (TIGRESS) will consist of twelve units of four high-purity germanium (HPGe) crystals in a common cryostat. The outer contacts of each crystal will be divided into four quadrants and two lateral segments for a total of eight outer contacts. The performance of a prototype HPGe four-crystal unit has been investigated. Integrated noise spectra for all contacts were measured. Energy resolutions, relative efficiencies for both individual crystals and for the entire unit, and peak-to-total ratios were measured with point-like sources. Position-dependent performance was measured by moving a collimated source across the face of the detector.
