Overview: Front End System
ldigitizing 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
lfront-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