STATUS OF THE ACS-BASED CONTROL SYSTEM OF THE MID-SIZED TELESCOPE PROTOTYPE FOR THE CHERENKOV TELESCOPE ARRAY (CTA)
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1 STATUS OF THE ACS-BASED CONTROL SYSTEM OF THE MID-SIZED TELESCOPE PROTOTYPE FOR THE CHERENKOV TELESCOPE ARRAY (CTA) Peter Wegner ICALEPCS 2013, San Francisco, Oct. 09 th, 2013 Peter Wegner ICALEPCS, San Francisco, October 09 th, 2013
2 Cosmic rays Victor F. Hess 1912 (Nobel Prize 1936) Peter Wegner ICALEPCS, San Francisco, October 09 th, 2013
3 Cosmic rays Victor F. Hess 1912 (Nobel Prize 1936) Tevatron LHC Peter Wegner ICALEPCS, San Francisco, October 09 th, 2013
4 Origin of cosmic particles Peter Wegner ICALEPCS, San Francisco, October 09 th, 2013
5 Detection of Cosmic Rays and Gamma Rays γ ~ 10 km Particle Shower At 100 GeV ~ 120 m ~ 10 Photons/m 2 ( nm)
6 Detection of Cosmic Rays and Gamma Rays γ ~ 10 km Particle Shower Cherenkov Light At 100 GeV ~ 120 m ~ 10 Photons/m 2 ( nm)
7 Detection of Cosmic Rays and Gamma Rays γ ~ 10 km Particle Shower Cherenkov Light 5 nsec At 100 GeV ~ 120 m ~ 10 Photons/m 2 ( nm)
8 Detection of Cosmic Rays and Gamma Rays γ ~ 10 km Particle Shower Cherenkov Light 5 nsec At 100 GeV ~ 120 m ~ 10 Photons/m 2 ( nm)
9 Detection of Cosmic Rays and Gamma Rays γ ~ 10 km Particle Shower Cherenkov Light 5 nsec At 100 GeV ~ 120 m ~ 10 Photons/m 2 ( nm)
10 Detection of Cosmic Rays and Gamma Rays γ Focal Plane ~ 10 km Particle Shower Cherenkov Light 5 nsec At 100 GeV ~ 120 m ~ 10 Photons/m 2 ( nm)
11 Detection of Cosmic Rays and Gamma Rays γ Focal Plane ~ 10 km Particle Shower Cherenkov Light 5 nsec ~ 120 m Intensity Shower Energy At 100 GeV ~ 10 Photons/m 2 ( nm)
12 Detection of Cosmic Rays and Gamma Rays γ Focal Plane ~ 10 km Particle Shower Cherenkov Light 5 nsec ~ 120 m Intensity Shower Energy At 100 GeV ~ 10 Photons/m 2 ( nm)
13 Detection of Cosmic Rays and Gamma Rays γ Focal Plane ~ 10 km Particle Shower Cherenkov Light 5 nsec ~ 120 m Intensity Shower Energy At 100 GeV Image Orientation Shower Direction ~ 10 Photons/m 2 ( nm)
14 Detection of Cosmic Rays and Gamma Rays γ Focal Plane ~ 10 km Particle Shower Cherenkov Light 5 nsec ~ 120 m Intensity Shower Energy At 100 GeV Image Orientation Shower Direction ~ 10 Photons/m 2 ( nm) Image Shape Primary Particle
15 Stereoscopic Observation Technique
16 Stereoscopic Observation Technique
17 Stereoscopic Observation Technique
18 Stereoscopic Observation Technique
19 Stereoscopic Observation Technique
20 Stereoscopic Observation Technique
21 Stereoscopic Observation Technique
22 Stereoscopic Observation Technique
23 Stereoscopic Observation Technique Intensity Energy Orientation Direction Image Shape Particle Stereo View Source
24 Stereoscopic Observation Technique Intensity Energy Orientation Direction Image Shape Particle Stereo View Source
25 Stereoscopic Observation Technique Intensity Energy Orientation Direction Image Shape Particle Stereo View Source
26 Stereoscopic Observation Technique Intensity Energy Orientation Direction Image Shape Particle Stereo View Source
27 Stereoscopic Observation Technique Intensity Energy Orientation Direction Image Shape Particle Stereo View Source
28 Stereoscopic Observation Technique Intensity Energy Orientation Direction Image Shape Particle Stereo View Source
29 Stereoscopic Observation Technique Intensity Energy Orientation Direction Image Shape Particle Stereo View Source
30 Stereoscopic Observation Technique source direction Intensity Energy Orientation Direction Image Shape Particle Stereo View Source
31 Cherenkov telescope projects VERITAS Southern Arizona, US MAGIC La Palma Spain H.E.S.S. Namibia Peter Wegner ICALEPCS, San Francisco, October 09 th, 2013
32 Cherenkov Telescope Array - CTA The next generation of gamma-ray experiments Ten times higher sensitivity Extended energy range Improved angular resolution Observatory on both hemispheres CTA consortium: 1100 authors from 27 countries from Europe, the Americas, Africa, Asia, Australia 32 Peter Wegner ICALEPCS, San Francisco, October 09 th, 2013
33 CTA Physics SNR Supernova Remnants GRB Gamma Ray Bursts Micro quasars Understanding of cosmic ray sources AGN Active Galactic Nuclei Pulsar, PWN Pulsar Wind Nebula Detailed study of cosmic particle accelerators in and beyond our galaxy Starburst Galaxies Dark matter Unknown Sources Peter Wegner ICALEPCS, San Francisco, October 09 th, 2013
34 CTA Telescope Arrays 2 Arrays: North+South All-Sky Coverage Large-Sized Telescope - LST low energy section E thresh ~ 10 GeV a few ø=23 m telescopes Mid-Sized Telescope - MST core array 100 GeV-10 TeV ~ 40 ø=12 m telescopes Small-Sized Telescope - SST high energy section, > 10 TeV ~ 40 ø=6 m tel. on 10 km 2 area Peter Wegner ICALEPCS, San Francisco, October 09 th, 2013
35 Mid-Sized Telescope MST- Prototype Mid-sized prototype in Berlin Adlershof, operational since May 2013 (DESY, Humboldt University Berlin, University of Potsdam) Test and verification of basic hardware technologies: Drive system, CCD cameras for monitoring/pointing, Active Mirror Control (AMC), Weather Station, Condition Monitoring,. Implementation and test of CTA Array Control and Data Acquisition software (ACTL) : Commissioning of components for: Control of drive system, AMC, CCD, camera dummy, weather station,.. Alarm and logging system Data transfer mechanisms Database tests: For slow control and measurements storage and analysis. Scaling test for CTA array level usage. Peter Wegner ICALEPCS, San Francisco, October 09 th, 2013
36 CTA ACTL basic software technologies ALAMA Common Software - ACS: Framework for distributed applications used for control systems, esp. of the ALMA array, one of the largest astronomical projects, similar in many aspects to CTA C++, Java and Python implementations Uses Container/Component Model CORBA communication OPC UA: OPC Specification from the OPC Foundation A cross-platform service-oriented architecture for process control Multi-platform implementation, including portable ANSI C, C++, Java and.net implementations High scalability: from smart sensors and actuators to mainframes and servers on embedded systems Hardware DevIO: is an ACS simple and generic abstraction of hardware monitor and control point, based on the Bridge design pattern. OPC UA DevIO ACS Peter Wegner ICALEPCS, San Francisco, October 09 th, 2013
37 ACS Framework ACS the common middleware for the ALMA software development, runs under Scientific Linux (RedHat Enterprise based distr. Fermilab, CERN) provides an XML configuration database (CDB) Containers, Components, Manager Employs several standard CORBA services Notification service Naming service Interface repository Provides generic GUIs and tools for ACS Command Center, Logs Displayer, Object Explorer CDB Explorer, Alarm Display System Peter Wegner ICALEPCS, San Francisco, October 09 th, 2013
38 OPC UA Device level abstraction courtesy Louise Oakes Application layer ACS framework ACS integrated OPC UA client interface OPC UA (common abstract interface ) Labview courtesy Thierry Le Flour, LAPP, Annecy Drive PLC Camera Active Mirror Control CCD cameras Weather station High Voltage System Slow Control Special hardware CAN Bus Peter Wegner ICALEPCS, San Francisco, October 09 th,
39 MST Prototype Instrumentation and ACTL Telescope Control server Dell PowerEdgeR720xd 2 CPUs (12 CPU cores) 128GB main memory 6TB local disk space. Scientific Linux 6.4 Peter Wegner ICALEPCS, San Francisco, October 09 th, 2013
40 MST Prototype Instrumentation and ACTL Weather station OPC UA server Java ACS component Telescope Control server Dell PowerEdgeR720xd 2 CPUs (12 CPU cores) 128GB main memory 6TB local disk space. Scientific Linux 6.4 Peter Wegner ICALEPCS, San Francisco, October 09 th, 2013
41 MST Prototype Instrumentation and ACTL Weather station OPC UA server Java ACS component Camera dummy OPC UA server Java ACS component Telescope Control server Dell PowerEdgeR720xd 2 CPUs (12 CPU cores) 128GB main memory 6TB local disk space. Scientific Linux 6.4 Peter Wegner ICALEPCS, San Francisco, October 09 th, 2013
42 MST Prototype Instrumentation and ACTL Weather station OPC UA server Java ACS component Camera dummy OPC UA server Java ACS component Telescope Control server Dell PowerEdgeR720xd 2 CPUs (12 CPU cores) 128GB main memory 6TB local disk space. Scientific Linux 6.4 Active mirror control Different designs: Xbee wireless CAN-bus ACS components, common interface Peter Wegner ICALEPCS, San Francisco, October 09 th, 2013
43 MST Prototype Instrumentation and ACTL Weather station OPC UA server Java ACS component Camera dummy OPC UA server Java ACS component Telescope Control server Dell PowerEdgeR720xd 2 CPUs (12 CPU cores) 128GB main memory 6TB local disk space. Scientific Linux 6.4 Active mirror control Different designs: Xbee wireless CAN-bus ACS components, common interface 5 CCD units OPC UA server Java ACS component Video display application Document oriented database Peter Wegner ICALEPCS, San Francisco, October 09 th, 2013
44 MST Prototype Instrumentation and ACTL Weather station OPC UA server Java ACS component Camera dummy OPC UA server Java ACS component Active mirror control Different designs: Xbee wireless CAN-bus ACS components, common interface 5 CCD units OPC UA server Java ACS component Video display application Document oriented database Telescope Control server Dell PowerEdgeR720xd 2 CPUs (12 CPU cores) 128GB main memory 6TB local disk space. Scientific Linux 6.4 Drive System PLC with native OPC UA server ACS component Peter Wegner ICALEPCS, San Francisco, October 09 th, 2013
45 MST CCD camera readout & control OPC UA server provides the camera information model (Data&State Model + Basic functions), uses the SDKs from the CCD camera manufacturer for hardware accessing Java DevIO and Prosys Java SDKs for OPC UA and ACS communication. Image data transferred (push) by a CORBA method call on one or more listeners (ACS components or CORBA objects). idea to test several other data transfer technologies. For integration test, each ACS component includes an equivalent simulation component. (True also for OPC UA servers) ACS domain ACS domain Bulk data Slow control Peter Wegner ICALEPCS, San Francisco, October 09 th, 2013
46 CCD camera ACS GUI Peter Wegner ICALEPCS, San Francisco, October 09 th, 2013
47 Active Mirror Control (AMC ) ACS interface Direct access from Active Mirror Control to ACS DevIO device abstraction layer ACS domain DevIO Bulk data Slow control Peter Wegner ICALEPCS, San Francisco, October 09 th, 2013
48 MST - Data persistence and archives Configuration database (CDB) Device configuration and default values Front End: ACS TMCDB Backend: MySQL Logging/alarms storage Front-End: ACD logging and alarm providers Backend: MongoBD CCD Data storage Store the CCD images and headers in the same database Front-End: CCD camera readout Back-End: MongoDB, images in GridFS Monitoring storage: Property Recorder Monitoring points in device properties Periodic and/or value change monitors Front-End: Python ACS applications Back-End: MongoDB and MySQL Peter Wegner ICALEPCS, San Francisco, October 09 th, 2013
49 First MST System test under full ACTL control CCD night sky data taking with MST prototype (Sep 13 th, 2013) under ACTL control Took three 10 minutes runs: Select a star from the star catalogue Input RA/DEC coordinates to ACS drive system component and let telescope track star Continuously readout CCD images with 5 seconds exposure Images automatically stored in GridFS with metadata linked in mongodb (NoSQL database) Extract images from mongodb Analyse images with astronomy.net ACS alarm and logging system running Weather Station running (picture - courtesy Louise Oakes) Peter Wegner ICALEPCS, San Francisco, October 09 th, 2013
50 MST Prototype On site server and remote control DESY Zeuthen Berlin-Adlershof Remote Control server 2xDell PowerEdgeR510 each 2 CPUs (12 CPU cores) 128GB main memory 5TB local disk space. Scientific Linux km Telescope Control server Dell PowerEdgeR720xd 2 CPUs (12 CPU cores) 128GB main memory 6TB local disk space. Scientific Linux 6.4 Software development/deployment for the MST Drive system example PLC Emulation OPC UA Server DriveSystem CommandInterface EnergyControl ErrorSystem MotionControl OperatingControl SystemInfo TrackControl DriveSystemMST Project software repository PLC with OPC UA Server In Adlerhof DriveSystem ACS Component on remote server DriveSystem ACS Component on telescope server Peter Wegner ICALEPCS, San Francisco, October 09 th, 2013
51 Summary - next steps Brief summary First experience with ALMA Common Software positive OPC UA server development for various devices feasible Using new approaches for control data storage (NOSQL data bases) promising Next Integrate Dummy camera and Active Mirror Control Add non-optical sensors (condition monitoring) Automatize operations Use script-base operation Central array control GUI Central Array Control Prototype Simulate ~100 telescopes and components (data, error handling) Integrate an expert system for error/alarm handling Peter Wegner ICALEPCS, San Francisco, October 09 th, 2013
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