ATLAS TDAQ Acronyms
This is a compilation of acronyms frequently used in the ATLAS Trigger and Data Acquisition systems. The list emerged from listening to the presentations at the ATLAS/TDAQ workshop at CERN, May 15-19, 2006. It is made up of the acronyms that were most commonly used. It is neither complete nor necessarily 100% correct. For a more comprehensive list, see the ATLAS TDAQ Glossary compiled by Marc Dobsonfrom which this heavily draws.
TDAQ
Trigger/Data Acquisition
ROS
Read-Out System
ROB
Read-Out Buffer
ROBIN
Read-Out Buffer Input Stage
ROD
Read-Out Driver
ROL
Read-Out Link
RoI
Region of Interest
RoIB
Region of Interest Builder
L2PU
Level 2 Processing Unit
L2SV
Level 2 Supervisor
DFM
Data Flow Manager - The DFM orchestrates the correct flow of data fragments between ROSs and SFIs. It is triggered by the L2SV, load balances the event building tasks on the SFIs and ensures that the ROSs do not overflow their internal memory buffers.
SFI
Sub-Farm Input
SFO
Sub-Farm Output
LVL1
Level 1 Trigger
Level 1 Calorimeter Trigger
SL
Sector Logic
PPM
Preprocessor Module
CPM
Cluster Processor Module
JEM
Jet/Energy Module
CMM
Common Merger Module
HLT
High Level Trigger
LVL2
Level 2 Trigger
EF
Event Filter
PESA
Physics Event Selection Architecture
DCS
Detector Control System
LVPS
TTC
Timing, Trigger and Control
LTP
CTP
Central Trigger Processor - The component that generates the LVL1 Trigger
MUCTPI
Muon to CTP Interface
OKS
Object Kernel Support
Detector
MDT
TGC
RPC
Resitive Plate Chamber
ID
Inner Detector
UX15
Underground experimental area 15 (ATLAS cavern)
USA15
Underground services area 15 (ATLAS electronics cavern)