Overview: Front End System
¥digitizing electronics (VME
pipeline TDCs and scalers, FASTBUS ADCs and multihit TDCs) will be upgraded; VME electronics
will stay; FASTBUS ADCs will be replaced by FADCs at least partially;
FASTBUS multihit TDCs will stay but replacement solution
will be provided in case of aging problems
¥front-end readout (28 crates
with PowerPC-based Motorola VME multi-CPU controllers) will be reused; some hardware upgrades
and software improvements are required; the number of crates will be
increased up to about 40