Here we will try to collect some words, abbreviations and other stuff that is important or at least useful to know about the pixel detector and it's operation.
- Not all the words are explained by now, because this list is still work in progress ... so come back later of feel free to add stuff you consider important.
A
Alarm Screen |
Is the tool to look for current warnings and error messages concerning the detector. You can log in remotely (in case you have a P1 account) by typing e.g. rdesktop -g 1250x900 -a 16 -k de -d cern cerntsatldcs.cern.ch |
B
Bakeout Panel |
Special panel showing package temperatures and humidity values. |
BOC |
Back-Of-Crate cards recieve signals from the optoboards. |
C
Calibration Console |
Central DAQ tool to do calibrations, scane and analyses on the detector. See shifter info for details. |
D
Data Quality (DAQ) |
|
Detector Control System (DCS) |
The DCS monitors the current (and past) status of the detector, includes the software and hardware interlock control as well as the environmental information. |
DORIC |
Digital Optical Receiver IC chip. Digitises the signals received by the PIN diodes on the optoboards. |
Data Point Entry (DPE) |
One specific item in the PVSS database. It as a name and an alias. Look here for details. |
DRX |
Digital Receiver IC chip. Digitises the signals received by the PIN diodes on the BOCs. |
F
Finite State Machine (FSM) |
The FSM is the tool to represent the detector status and transitions from one status to another (also in DCS shifts). You can log in remotely (in case you have a P1 account) by typing e.g. |
H
HV |
High voltage for the modules to create the depletion zone. (150V, O(muA)) |
M
Module |
Thereis 1744 modules in the detector each consisting of 16 front ends (FEs). Six to seven build up one half-stave. Label example: L1_B04_S2_A7_M3A |
Module Controller Chip (MCC) |
|
O
Octant |
Subgroup of the detector in |
. N=8
P
PIN diode |
Positive-intrinsic-Negative diodes. Used to receive the signals send by the VCSELs |
Powercycle |
Process of switching off an on the module(s). |
ProzessVisualisierungs- und SteuerungsSystem (PVSS) |
Software and data base to monitor and control the detector and to store the DCS data. |
PVSS Data Viewer |
Tool to look at PVSS data. PDV on TWiki |
Q
Quadrant |
Subgroup of the detector in |
R
Read Out Driver (ROD) |
|
S
Scan, Analog |
|
Scan, BOC |
|
Scan, Inlink |
|
Scan, Inlink/Outlink |
|
Scan, Threshold |
|
Sector |
|
Stave |
There are 272 halv-staves in the detector, each with six to seven modules connected to it. |
V
VCSEL |
Vertical Cavity Surface Emitting Lasers. Used to send signals from the optoboards to the BOCs and vice versa. |
VDC |
VCSEL Driver Chip. Receives the electrical signals from up to seven modules and converts them to VCSEL drive current signals. |
VDD1_I, VDD1_V |
Digital current and voltage of the pixel modules. |
VDDA1_I, VDDA1_V |
Analog current and voltage of the pixel modules. |
VISet_I, VISet_V |
Current and voltage that determine the laser power of the VCSEL array(s). |
VVDC_I, VVDC_V |
Digital current and voltage of the pixel modules. |