Please cite this article in press as: V. Rathod, et al., Local control unit for ITER-India gyrotron test facility (IIGTF), Fusion Eng. Des. (2016), http://dx.doi.org/10.1016/j.fusengdes.2016.05.036 ARTICLE IN PRESS G Model FUSION-8779; No. of Pages 9 Fusion Engineering and Design xxx (2016) xxx–xxx Contents lists available at ScienceDirect Fusion Engineering and Design journal homepage: www.elsevier.com/locate/fusengdes Local control unit for ITER-India gyrotron test facility (IIGTF) Vipal Rathod * , Ronak Shah, Deepak Mandge, Rajvi Parmar, S.L. Rao ITER-India, Institute for Plasma Research, Bhat, Gandhinagar 382428, Gujarat, India h i g h l i g h t s • A dedicated full scale ITER prototype Local Control Unit for ITER-India Gyrotron test facility. • National Instruments® make PXIe system for real time control & data acquisition and Siemens® PLC for sequence control function. • Hardwired FPGA based fast protection interlock system. • High speed analog fiber optical transmission link using V/F and F/V technique. • Software framework based on LabVIEW TM platform and ITER CODAC Core System. a r t i c l e i n f o Article history: Received 19 June 2015 Received in revised form 18 May 2016 Accepted 21 May 2016 Available online xxx Keywords: ITER ECH&CD Gyrotron Data acquisition and control Optical link a b s t r a c t Electron Cyclotron system on ITER, is one of the important RF ancillary systems based on high power Gyrotron RF sources, that is used for plasma heating and current drive applications. To operate a Gyrotron source, various auxiliary systems and services such as Super Conducting Magnet set, High Voltage Power Supplies, Auxiliary Power Supplies, Waveguide components, Cooling water system and a Local Control Unit (LCU) are required. The LCU plays a very crucial role for the safe and reliable operation of Gyrotron system. A dedicated full scale ITER prototype LCU is being developed for testing and commissioning of an ITER like Test Gyrotron at ITER-India Gyrotron Test facility (IIGTF). The main functions of LCU include Sequence Control, Local Interlock Protection and Real Time Data Acquisition. PLC based slow controller is used for implementing the Sequence Control & Slow Interlock functions. Critical Protection Interlocks are required to have a response time of <10 s and are implemented using custom built hardware and PXIe based fast controller. Also PXIe system is used for implementing Real Time Data Acquisition function that is required to have slow and fast acquisition with online visualization and off line analysis facility. A Signal Conditioning Unit (SCU) is used to interface and faithfully transmit the field signals to the remote control systems. Necessary controller hardware is procured and several pre-prototype developments have been taken up to establish the critical subsystems such as protection interlocks and SCU. Software applications for PLC and PXIe systems are being developed using LabVIEW TM and CODAC Core System platforms. Here, we provide an overview of the prototype LCU for IIGTF, which includes the architecture, implementation topology, prototype test results along with the current status. © 2016 Elsevier B.V. All rights reserved. 1. Introduction The ITER Electron Cyclotron (EC) system is being developed to couple ≥20 MW of auxiliary power to the plasma at a frequency of 170 GHz for EC Heating and Current Drive (EC H&CD) applica- tions [1–3]. The ITER EC system will be developed through in-kind contributions from different domestic agencies (DAs). As a part of in-kind contributions to ITER, one of the ITER-India in-kind deliver- * Corresponding author. E-mail addresses: vipal.rathod@iter-india.org, vipal@ipr.res.in (V. Rathod). able packages is to supply two sets of EC RF sources (1 MW/3600 s) that provide a total 2 MW of EC power at 170 GHz frequency [3]. A Local Control Unit (LCU) to operate two Gyrotron systems is also part of the deliverable package. To support the ITER deliverables, ITER-India is developing a full- fledged Gyrotron test facility (IIGTF). The main objective of the IIGTF is to establish the Gyrotron system integration and integrated system performance. As shown in Fig. 1, this test facility will be hav- ing a Test Gyrotron, a Transmission line test set, CW dummy load, High Voltage Power Supplies (HVPSs) & Auxiliary power supplies, Gyrotron Diagnostics, Water cooling manifold with connections, Crowbar Protection system and a Local Control Unit (LCU). It has http://dx.doi.org/10.1016/j.fusengdes.2016.05.036 0920-3796/© 2016 Elsevier B.V. All rights reserved.