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Design of the Trigger Interface and Distribution Board for CEBAF 12 GeV Upgrade

Conference ·
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The design of the Trigger Interface and Distribution (TID) board for the 12 GeV Upgrade at the Continuous Electron Beam Accelerator Facility (CEBAF) at TJNAL is described. The TID board distributes a low jitter system clock, synchronized trigger, and synchronized multi-purpose SYNC signal. The TID also initiates data acquisition for the crate. With the TID boards, a multi-crate system can be setup for experiment test and commissioning. The TID board can be selectively populated as a Trigger Interface (TI) board, or a Trigger Distribution (TD) board for the 12 GeV upgrade experiments. When the TID is populated as a TI, it can be located in the VXS crate and distribute the CLOCK/TRIGGER/SYNC through the VXS P0 connector; it can also be located in the standard VME64 crate, and distribute the CLOCK/TRIGGER/SYNC through the VME P2 connector or front panel. It initiates the data acquisition for the front crate where the TI is positioned in. When the TID is populated as a TD, it fans out the CLOCK/TRIGGER/SYNC from trigger supervisor to the front end crates through optical fibres. The TD monitors the trigger processing on the TIs, and gives feedback to the TS for trigger flow control. Field Programmable Gate Arrays (FPGA) is utilised on TID board to provide programmability. The TID boards were intensively tested on the bench, and various setups.

Research Organization:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
DOE Contract Number:
AC05-06OR23177
OSTI ID:
1068967
Report Number(s):
JLAB-PHY-12-1573; DOE/OR/23177-2167
Country of Publication:
United States
Language:
English

References (1)

A 250 MHz Level 1 Trigger and Distribution System for the GlueX experiment conference May 2009

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Related Subjects

CEBAF upgrade
data acquisition
42 ENGINEERING
43 PARTICLE ACCELERATORS
Clocks
Continues Electron Beam Accelerator Facility
Field programmable gate arrays
Optical fibers
Switches
Synchronization
TD monitors
TID boards
TJNAL
Transceivers
VME P2 connector
VME64 crate
VXS P0 connector
VXS crate
data acquisition
distribution board
electric connectors
electron volt energy 12 GeV
field programmable gate arrays
front end crates
front panel
jitter
low jitter system clock
multicrate system
nuclear electronics
optical fibres
synchronisation
synchronized multipurpose SYNC signal
synchronized trigger
trigger circuits
trigger flow control
trigger interface board
trigger processing
trigger supervisor