CLOAC home page
The CLOAC ( CLOck And Control ) Master is used to generate clock and fast commands
for the SCT front-end modules.
In the absence of the TTC system, these are able to operate on command from
a local processor or fully stand-alone. Fanout modules can be used to
distribute trigger and clocks.
These have been used in the SCT system and beam tests at CERN since 1998.
Along with MuSTARD and SLOG modules produced at RAL and Cambridge, these are
essential components of the basic system required for testing the FE modules
using either electrical or optical connections.
CLOAC Master Module:
Note that there is a possibility of jitter of the CLOAC output clock
increasing above 0.5ns at some settings of the delay switches.
If you encounter this problem, please contact us to arrange
for a service modification to cure this.
- PLD1 (Mach5 - 256/68 -7YC)
VME Interface pld1.src
- PLD2 (Mach5 - 512/120-7YC)
Signal Generation pld2.src
- PLD3 (Mach5 - 256/68 -7YC)
Signal Timing/Burst pld3.src
Photos of the system test at CERN (B186, 1998)
Other Relevant pages
Last update: 12 October 2001
by Matthew Warren, Martin Postranecky (UCL) email: