Transcript transparencies

ATLAS MDT
Power Supply
DCS
Anastasios Iliopoulos
15/08/2006
Contents
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Power Supply of MDTs (High & Low Voltage)
ATLAS DCS
PVSS II
FSM
Project Panels & Sub-panels
Dynamic FSM Creation
ActiveX display of the FSM
Today’s status of the project
References
Power Supply of MDTs
 Two (or one) multilayers
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of drift tubes
High Voltage side
Readout side
Each multilayer is
operated by a separate
high voltage supply (3kV)
Low voltage (5V) is
provided to the readout
side of each chamber
Detector Control System (DCS)
ATLAS
Track
Detector
Muon
Spectrometer
CSC
MDT
Power
Supply
High Voltage
Low Voltage
Electromagnetic
Calorimeter
RPC
Monitoring
Temperature,
Magnetic Field
Hadronic
Calorimeter
PVSS II
 PVSS II by ETM
 Procedures for:
 Communication with
hardware
 Storing data
 Warnings & Errors
 Built-in programming
language (C++)
 Graphic Editor
 User abilities
 Create his personal
application
 Send and receive data
 Monitor and manage
the detector
Finite State Machine (FSM)
Over
Current
Recovery
TRIP
ON
 Michail Bachtis & Anastasios
Iliopoulos: PVSS project for
control & monitoring HV & LV
for MDT chambers
 Based on a FSM
RAMP
UP
RAMP
DOWN
OFF
 Depending on the state or
HW
ERROR
status of each node, is
returned a message and the
necessary action is executed
Created using
C++ and some
built-in
procedures of
PVSS
DCS team
of ATLAS
developed
a special
framework
Sub-panels
My Work – Part I:
Dynamic FSM Creation
 Automatic FSM generation
 Adds chambers to FSM using
the desired name and number of
HV & LV channels
 Sets automatically all necessary
parameters
 Capability of reading channel
parameters from a simple text file
 About 900 lines code
My Work – Part II:
ActiveX display of the FSM
 ActiveX object created
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with programming in
Visual Basic
Displays plugged
chambers sorted under
logical units
Displays current state or
status of each chamber
using colour code
Supports colour
propagation to the parent
levels
About 300 lines code
Today’s status of the project
 3 PCs will be used:
 Barrel A & C side
 EndCap A & C side
 “Supervisor” PC
 At this time the
project is tested,
monitoring the LV
supply of chambers in
sector 13
References
 Bachtis Michail, “Development of automatic control system for the
MDT-BIS detector”
 Bachtis Michail, “Update on the MDT Power Supply DCS”
 “ATLAS Muon Spectrometer - Technical Design Report”