Author/Authors :
Kwiatkowski، نويسنده , , K and Bracken، نويسنده , , D.S and Morley، نويسنده , , K.B and Brzychczyk، نويسنده , , E. Renshaw Foxford، نويسنده , , E and Komisarcik، نويسنده , , K and Viola، نويسنده , , V.E and Yoder، نويسنده , , N.R and Dorsett، نويسنده , , J and Poehlman، نويسنده , , J and Madden، نويسنده , , J. Ottarson، نويسنده , , J، نويسنده ,
Abstract :
A low threshold charged particle detector array for the study of fragmentation processes in light-ion-induced reactions has been constructed and successfully implemented at the IUCF and Saturne II accelerators. The array consists of 162-triple-element detector telescopes mounted in a spherical geometry and covering 74% of 4π in solid angle. Telescope elements are composed of (1) an axial-field gas ionization chamber operated with C3F8 gas; (2) a 0.5 mm thick passivated silicon detector, and (3) a 2.8 cm thick CsI(Tl) scintillation crystal with photodiode readout. Discrete element identification is obtained for ejectiles up to Z ∼ 16 over the dynamic range 0.7 ≤ EA ≤ 95 MeV/nucleon. Isotopes are also distinguished for H, He, Li and Be ejectiles with 8 ≲ EA ≲ 95 MeV. Custom-designed electronics are employed for bias supplies and linear signal processing. Data are acquired via a CAMAC/VME/Ethernet system.
