Requirements on a DCS system for GEM-based detectors Bernd Voss Helmholtzzentrum für...
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Transcript of Requirements on a DCS system for GEM-based detectors Bernd Voss Helmholtzzentrum für...
Requirements on a DCS system for GEM-based detectors
Bernd VossHelmholtzzentrum für Schwerionenforschung GmbH (GSI)
2DCS system for GEM-based detectors PANDA Week, Torino,
June 15th 2009B. Voss
Outline
Aim
Detector setup
Overview
Cylindrical GEM-TPC
Planar GEM-Trackers
DCS structure General & Design Options
In-situ Hardware Requirements
Control & Monitoring Concept
Supplies & Support
Gas
Low & High-Voltage
Cooling
Off-site Slow control system
PANDA DCS structure
Observables & Conditions
Parameters & Process Variables
Possible Improvements
Summary & Outlook
3DCS system for GEM-based detectors PANDA Week, Torino,
June 15th 2009B. Voss
Aim
Present the status, the thoughts given and decisions made
on the subjects so far
Learn & Discuss about options
Looking for advice for set up & Get it running
4DCS system for GEM-based detectors PANDA Week, Torino,
June 15th 2009B. Voss
1
GEM-TPC (2 x ½) ‘short version’ 1.2m (1.5m)
GEM-Trackers (4) (GT1..4)
Detector Setup Overview
Target spectrometer@PANDA ‘V833’
1 2 3 4
5DCS system for GEM-based detectors PANDA Week, Torino,
June 15th 2009B. Voss
Cylindrical (½) GEM-TPC Prototype Assembly
GEM stack
Drift electrode
Cooling Support &
LV- Distribution
Front-End Electronic
Pad Plane Support &
Media-Distribution
Sensor info
6DCS system for GEM-based detectors PANDA Week, Torino,
June 15th 2009B. Voss
Planar GEM-Trackers Design study
Window
Drift electrode
GEM stackPad Plane
Support &
Media-Distribution
Cooling Support &
LV- Distribution
Front-End Electronic
Shielding Cover
& Read-out
Plane
Possible cabling hooks: central bar & circumference
Sensor info
7DCS system for GEM-based detectors PANDA Week, Torino,
June 15th 2009B. Voss
DCS structure General
It starts at the detector + its supplies + operation monitors
It has to cope with various (sensor-) hardware, information pathways (WHICH
information goes from WHERE to WHERE, communication protocols (I2C, SPI, CAN, Ethernet TCP/IP …)
It has to deal with information for device-configuration, -control, -operation and supplemental ambient & operational conditions
8DCS system for GEM-based detectors PANDA Week, Torino,
June 15th 2009B. Voss
System design options
Separate sites: ‘in-situ’, ‘local’, detector-near systems
µController, CPLD, DSP, FPGA, SPS (Siemens S7) etc…
‘off-site’, supply & electronics room ‚Zoo‘ of Hardware
May involve various software solutions / SCADA systems Assembler, C, …
EPICS
LabVIEW
MonALISA
PVSS/UNICOS
9DCS system for GEM-based detectors PANDA Week, Torino,
June 15th 2009B. Voss
In-situ Part Hardware Requirements
Dense & compact Local ‘intelligence’ & pre-processing
Modular (test and p-o-p activities)
Coping with the needs of a hostile environment Radiation tolerance
Aging resistance
Insensitivity to magnetic fields (no inductivities based on magnetic material)
Communication via LWL
So far, no appropriate candidates under investigation
11DCS system for GEM-based detectors PANDA Week, Torino,
June 15th 2009B. Voss
In-situ Detector Control & Monitoring Concept
Current concept: Modular, expandable, flexible
Hierarchical interlocking
Failsafe operation
Hard- & software limits
History recording
Design: Placement on the rim of the
Media-flange
Questions: Should we go this way?
12DCS system for GEM-based detectors PANDA Week, Torino,
June 15th 2009B. Voss
Gas System
Sensor info
13DCS system for GEM-based detectors PANDA Week, Torino,
June 15th 2009B. Voss
Mpod 19’’ Mainframe / Power bin (5k€)
ten module slots primary HV power supply 600W
for 1- 4 HV modules, expandable Controller with Ethernet / USB interface 9U high with frontal / lateral air inlet
MPV 8008 LV module (1.5k€)
8 channels 0..8V, 10A, max. 50W, floating, low noise Sub-D high power connectors 1x for 4 ch Sub-D 37 pin for sense & control
MPV 4015L LV module (1.4k€)
4 channels 0..15V, max. 2,5A, max. 50W, floating
MPV 1008 LV module High Power (0.7k€)
4 channel, 2 Mpod slots 0- 7V, max. 115A, max. 500W, floating
HPn 300 106 HV module (4.4k€)
0..-30kV, 10mA, 300W, Residual ripple < 10-4 Voutmax
I/U Setting via 10-turn potentiometer RS 232 or CAN Interface LED Display (4 digit) 30 kV LEMO Connector ERA.3Y.425.CLL LEM30_CAB5, Lemo plug 30kV & 5m cable (180€)
EHS 8060n_105_SHV HV module (2.6k€)
8 channels 0..-6 kV, 1mA/channel, Residual ripple < 50 mV 6HE-cassette with CAN-Interface (Enhanced Device Control Protocol) Resolution U/I Settings & Trip: 240 mV/ 40 nA Resolution U/I Measurement: 1200 mV/ 20 nA SHV-Connector with common GND
Low- & High-Voltage supply
Status: Power system delivered
(ready-to-run)
Needs installation nearby
Sensor info
14DCS system for GEM-based detectors PANDA Week, Torino,
June 15th 2009B. Voss
Cooling System
Findings: Overpressure system is preferable
< 5 bar@entrance
Water is insufficient, use HFE 7100
Cooling power > 5 kW@12,5°C
Pressure drop over cooling system: < 1 bar (optimized)
Mechanical stress 0,25 N/mm2
Status: Cooling system delivered
(ready-to-run)
Needs installation nearbySensor info
15DCS system for GEM-based detectors PANDA Week, Torino,
June 15th 2009B. Voss
‘Off-site’ Part Slow control system
PostgreSQL data base
HV values Temperatures, flows etc. Configuration of FEE
Queue based command exchange (back & front end) Web front end for controlling and monitoring Sensor signals digitized by a Siemens Simatic S7 Scalable and variable system Mainly programed in C++ and PHP
Task of diploma student to set up the slow control
LabVIEW drivers / GUIs will be set up in parallel
16DCS system for GEM-based detectors PANDA Week, Torino,
June 15th 2009B. Voss
DCS structure Observables & Parameters
Observables (approx. 46 in 2000 channels for the GEM-Trackers)
Overall status Temperature Pressure Flow (of media) Voltage Current Degradation (Ageing ?) ‘Special events’ (e.g. sparks)
Indicators / quantities Analog / Digital / Boolean Voltage Current Charge (?)
Hardware, Sensors / Transducers
GEM-detector (generic) Supply (external)
Gas supply HV supply LV supply Cooling (Chiller)
Control (local@detector) Gas Flow Bias voltages High voltages FEB ROB DAQ
Operation FEB ROB DAQ Calibration system …
17DCS system for GEM-based detectors PANDA Week, Torino,
June 15th 2009B. Voss
PANDA DCS Requirements DBUI ‘Parameters’
Currently 47 entries in table ‘Parameters’ for the GEM-based detectors
18DCS system for GEM-based detectors PANDA Week, Torino,
June 15th 2009B. Voss
PANDA DCS Requirements DBUI ‘ProcessVariables’
Currently 46 entries (2000 channels) in table ‘ProcessVariables’ for the GEM-Trackers
19DCS system for GEM-based detectors PANDA Week, Torino,
June 15th 2009B. Voss
Structures & Methods Suggestions I
Needed information / structures:
Structured Datasets
allowing trees instead of simple and somewhat ‘unhandy’ flat presentation
taking into account the definition of Detector Sub-Groups e.g. following the various stages and/or states of operation of the system (State Machine)
20DCS system for GEM-based detectors PANDA Week, Torino,
June 15th 2009B. Voss
Structures & Methods Suggestions II
Required, proposed methods: Easy-to-use multiple-entry interface
for whole sets of data (scripting, ‚xml’ etc?)
‘Delete’ options for respective table(s) ‘Parameters’ definitions ‘ProcessVariables’ definitions
Allow multiple usage of entries in table ‘ProcessVariables’ for different detector systems e.g. in cases where the same hardware is involved
Possible improvement to existing features: Keep table-header information visible at any time for the data input Group Information in tables by multiple (logic) choices
(e.g. GEM & Pressures & … etc.) ‘Connectivity’ definition comes ‘unhandy’ Define Interlock levels in more detail (e.g. ‘ALARM’ and ‘WARNING’) Specify clearly (variable named ‘Status’ is not helping much)
21DCS system for GEM-based detectors PANDA Week, Torino,
June 15th 2009B. Voss
Summary and Outlook
Working on the topics we can currently approach / address
Started with standalone solution / small scale for the lab use (PostgreSQL data base, LabVIEW)
Requirements on time-scale:
Requirements on support:
Are there possible synergies between sub groups?
2009 FOPI GEM-TPC Beam-test pending2010 ELSA Installation & Operation … PANDA Construction of a PANDA GEM-TPC
Prototype of a PANDA GEM-Tracker
Backup slides
23DCS system for GEM-based detectors PANDA Week, Torino,
June 15th 2009B. Voss
Integration Working hypothesis on requirements
High-density cabling required
Use cabling as structural elements
Install in-situ intelligence to reduce cabling effort
24DCS system for GEM-based detectors PANDA Week, Torino,
June 15th 2009B. Voss
DCS System ‚In-situ‘ Part
25DCS system for GEM-based detectors PANDA Week, Torino,
June 15th 2009B. Voss
DCS System ‚Off-site‘ Part