The readout and control system of the mid-size telescope prototype of the Cherenkov Telescope Array

The Cherenkov Telescope Array (CTA) is one of the major ground-based astronomy projects being pursued and will be the largest facility for ground-based y-ray observations ever built. CTA will consist of two arrays: one in the Northern hemisphere composed of about 20 telescopes, and the other one in...

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Bibliographic Details
Published in:Journal of physics. Conference series 2014-01, Vol.513 (1), p.12030-7
Main Authors: Oya, I, Anguner, O, Behera, B, Birsin, E, Fuessling, M, Melkumyan, D, Schmidt, T, Schwanke, U, Sternberger, R, Wegner, P, Wiesand, S
Format: Article
Language:English
Subjects:
Active control
Actuators
Arrays
Astronomy
Charge coupled devices
Computer programs
Control equipment
Control systems
Data logging
Ground-based observation
Middleware
Northern Hemisphere
Performance evaluation
Physics
Prototypes
Radio telescopes
Software
Southern Hemisphere
Storage
Telescopes
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Description
Summary:The Cherenkov Telescope Array (CTA) is one of the major ground-based astronomy projects being pursued and will be the largest facility for ground-based y-ray observations ever built. CTA will consist of two arrays: one in the Northern hemisphere composed of about 20 telescopes, and the other one in the Southern hemisphere composed of about 100 telescopes, both arrays containing telescopes of different type and size. A prototype for the Mid-Size Telescope (MST) with a diameter of 12 m has been installed in Berlin and is currently being commissioned. This prototype is composed of a mechanical structure, a drive system and mirror facets mounted with powered actuators to enable active control. Five Charge-Coupled Device (CCD) cameras, and a wide set of sensors allow the evaluation of the performance of the instrument. The design of the control software is following concepts and tools under evaluation within the CTA consortium in order to provide a realistic test-bed for the middleware: 1) The readout and control system for the MST prototype is implemented with the Atacama Large Millimeter/submillimeter Array (ALMA) Common Software (ACS) distributed control middleware; 2) the OPen Connectivity-Unified Architecture (OPC UA) is used for hardware access; 3) the document oriented MongoDB database is used for an efficient storage of CCD images, logging and alarm information: and 4) MySQL and MongoDB databases are used for archiving the slow control monitoring data and for storing the operation configuration parameters. In this contribution, the details of the implementation of the control system for the MST prototype telescope are described.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/513/1/012030