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Home page
1. Hardware/software requirements
2. Hardware manuals
3. FAST-DAQ software
4. FAST-DAQ Setup
5. Assembly and Test Instructions
6. Problems encountered
7. Production Status
8. Parts tracking at FAST sites
9. EMU Schedule
10. Related sites
12. UF Pictures archive
13. Lexicon
14. Contact information
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Lexicon
AFEB: Anode front end board. Amplifies, shapes, discriminates and
presents the anode signals to the ALCT.
ALCT:
1 Anode local charge track, an LCT amongst the anode data.
2 Anode local charge track board. On chamber-electronics that
processes data from the AFEBs
and generates an LCT, also packages anode data in a buffer to be streamed
to the TMB.
BNC: Berkeley Nuclear Corporation. Defines a connector standard.
BXN: Bunch crossing number. A number that is assigned to each collision.
This number is incremented every 25ns, which is the period of
collisions at the LHC.
CAMAC: Computer Automation and Control. A packaging standard for electronics
and a standard for DAQ. A DAQ-oriented bus is defined.
CCB: Clock and control board. Distributes TTC signals to the front end so
that all detecting elements present synchronized data with the correct
BXN tag.
CERN:
European Organization for Nuclear Research.
A laboratory with a large particle collider outside of Geneva,
Switzerland (website).
CFEB: Cathode front-end board. On-chamber electronics that collects cathode
strip data.
CMS: Compact muon solenoid. A collider detector.
The original design by Carlos Rubbia envisioned
a high-field solenoid, a hadron calorimeter within the solenoid and
muon tracking outside of the thick solenoid's iron. It was imagined that
the muon signals themselves would give much interesting physics.
CLCT:
1 Cathode local charge track, an LCT amongst the cathode data.
2 Cathode local charge track board, historically, a board that sought
an LCT among the cathode data.
D360: A microcontroller that performs DCS functions and serves as a VME
crate controller.
DAQ:
1 data acquisition
2 data acquisition system.
DAQMB: Data Acquisition Mother Board. Designed by OSU. Collects data from
the CFEBs
DCS: Detector control system. A way to configure and monitor the detector's
infrastructure.
DMB: synonym of DAQMB
Documentation: Like love, there is never enough of this in the world.
EMU: The endcap muon system. The EMU and the Barrel muon detectors together
form the muon detection system originally envisioned for CMS.
FAST: Final Assembly and Subsystem Test
Front end: That part of the electronics that is closest to the actual
detecting element.
L1A: Level 1 accept. The signal that comes back from the level 1 trigger
to begin a dump of the front end so that the data are collected by the
DAQ.
Level 1 trigger:
1. Synonym of L1A
2 The trigger circuitry that collects chamber LCT's and other information
from the all detecting elements of the CMS detector, and generates the
L1A. This decision must be made at exactly 2.9us after the generation
of the original CLCT or ALCT.
LCT: local charge track. Can originate from the anode section or cathode
section. Indicate a high probability that a track exists.
LHC: The large hadron collider at CERN.
MPC: Muon port card. A fast board that streams muon data to the DAQ from
a VME crate.
NIM: Nuclear Instrumentation Module. A packaging standard for electronics.
Only a power supply bus is defined.
Slow control: A synonym for DCS.
TMB: Trigger Mother Board. Designed by UCLA. Historically, the TMB simply
correlated local charge tracks between the anode and cathode section.
Now, the TMB also contains both this function and the CLCT function.
The TMB is responsible for sending a chamber-wide LCT to the Level 1
trigger.
TTC: Timing and trigger control. The means by which the experiment timing
is controlled.
VME: Versa Module Europa. A packaging standard for electronics. A
microprocessor-like bus is defined.
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