PHOSEMCAL Detector Control System DCS for Front End Electronics

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PHOS/EMCAL Detector Control System (DCS) for
Front End Electronics

• Status Report 9/10-06

In alphabetical order
Sebastian Bablok, Abbie Bauer, Joseph
Butterworth, Per Thomas Hille, Dag Toppe Larsen,
Alexander Mammonov, Matthias Richter, Haakon
Rovik, Benjamin Stockert, Fei Fei Zou
Presenten by Per Thomas Hille
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Future system
PHOS DCS for frontend electronics
Current System
APD GUI
Configuration files
PC
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Command encoder
Result decoder
Command data
Configuration Data base
BLOBs (SQL)
PC
Readback result
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Fee Client (DIM)
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Service info
Request service
Service data
Subscribe to service
Ethernet
DIM DNS
Command data
Detector
Register service
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Outside world
Fee Server (DIM)
PHOS CE
Execute
DCS card
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1
DCS/RCU Mezzanine
Command data
1
1
RCU backplane
RCU
Readback
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The PHOS beamtest setup July-August 2006 (grossly
simplified)
Beam trigger
PHOS Module
Dual D-rorc
Led trigger
Trigger
DCS RCU
DCS RCU
Pedestal trigger
Switch
Ethernet
DCS RCU
DCS RCU
4 DDL
DCS network (master fee-net)
DCS gateway
Cern network (lxplus)
DAQ Computer
GUI
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PABC GUIGraphical user interface to the
PHOS/EMCAL DCS software
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Preliminary result of the 2006 calibrationthe
first PHOS module is in operation

• Average working temperature of the PWO matrix ?
  16oC
• Number of calibrated detector channels 1825
• Gains of all the calibrated channels are equal
  within ? 4 (?)
• Preliminary relative energy resolution for 2 GeV
  electrons (without fine tuning the gains) ? 5.
• At ? 16oC an average APD bias voltage ? 350 V,
  all the bias voltages are below 400 V ? will be
  even lower at ? 25oC
• Some problems were found ? to be fixed in
  September

The module at T10 beam-line
Position of the calibrated channels (2/8 on top
could not be reached with the beam, 1/8 had the
HV problem)
Channel gains at final APD bias voltages (2 GeV
electron peak position)
Relative energy resolution (very preliminary)
Final APD bias voltage
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DCS achievements before and during PHOS
comissioning beamtest

• APD bias controll.
• Sucessfull calibration of 1825 channels.
• Graphical user interface to DCS software/APD bias
  control made in ROOT.
• Database for APD bias settings
• Interaction with the database from the PABC GUI
• PVSS
• The full communication chain from the feeservers
  running on the DCS cards to PVSS (Thanks to Abbie
  Bauer and Joseph Butterworth).
• Monitoring of simulated temperatures on the
  feeserver
• New BC firmware that allows communication via
  the RCU slow control unit (Fei Fei Zou)

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Status of PVSS/FSM integration

• FEE Monitoring in PVSS
• Communication chain from the DCS cards to PVSS is
  implementet (thanks to Abbie and Joey), but
  currently only with monitoring of simulated
  temperatures due to hardware problems of the FEE.
• Status Not finnished and not in Progress
• FEE Configuration from PVSS
• Low level software is implemented and was
  sucessfylly used during beamtest. Configuration
  with dedicated software, but not yet via PVSS.
• Status In progress

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Remaining Tasks

• Development of software for the feeserver to
  communicate with the PHOS version of the slow
  controll.
• When Depends on when PHOS module will be
  available for testing.
• Responsible Dag Toppe Larse Per T (side
  activity)
• Communication via PVSS with the PHOS/EMCAL DCS
  software.
• When January 2007
• Responsible Per T (Only the communication chain)
• PVSS FSM implemantion of the whole DCS system.
• When ?
• Responsible Michail Bugolovski Alexander
  Mammonov

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Summary

• Significant progress on the DCS implemetation
  during beamtest preparation and beamtest. Most of
  the bits and pieces are working, but it is not
  yet one integrated system.
• We dont have any monitoring of the electronics
• It is to few indians to have all the work done in
  time.
• The electronics for PHOS is identical to EMCAL.
  We shoud take advantage of that and try to do as
  much as possible in a common effort.
• We should try to reuse as much as possible of the
  TPC DCS system.