Control and data acquisition system of the KTX device Bingjia Xiao1,2, Zhenshan Ji1, Huazhong Wang1, Feng Wang1, Shi Li1,Yong Wang1, Zuchao Zhang1, Qiping Yuan1, Ying Chen1   1Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui , China 2School of nuclear science and technology, University of Science and Technology of China, Hefei, Anhui, China

OUTLINE Overview Central Control Data Acquisition Plasma Control Summary

Central Control System (CCS) Overview KTX Central Control System (CCS) Data manage Safety & Interlock Discharge Control Data acquisition Plasma control Timing system

KTX Central Control System Discharge Monitoring (MMI) Injection Setting Discharge Configuration Timing Setting Signal Test Setting Safety & Interlock Start Power charging PCS Trigger DAQ Ready Power OK

OUTLINE Overview Central Control Data Acquisition Plasma Control Summary

Data Acquisition Requirements: Each shot < =100ms Signals: ~2,000 channels Sampling rates: 250KS/s to 10 MS/s Automatic data acquisition Automatic data storage Data access Changeable acquisition time Distributed DAQ nodes Kinds of data acquisition device Data acquisition control HDF5 data storage B/S & C/S

Data Acquisition Structure Internal Network Clients DAQ data HDF5 server DAQ Control WebScope 250KSPS Diagnostic Systems data Matlab External Network 1M~10MSPS

Data Acquisition Software Structure DAQ Control Data Access Clients Central Control System Administrator Users Data Storage Data Service Server DAQ Nodes Data Pool request data response

DAQ Control DAQ Parameter DAQ Parameter Setting DAQ Status DAQ Status Monitor DAQ Information DAQ Status DAQ Flow Control DAQ Parameter Acquisition Command Shot Command Response DAQ Nodes Data Storage Data Command

Signal condition device Integrator system The integrator system is developed by the EAST team. Parameters: (1) Drift: 100 s drift < 0.1 mWb ( gain=1) (2) Gain: 0.5, 1, 2, 5 (3) Output Voltage Range: -10V～+10V Gain-variable amplifier The gain-variable amplifier is developed by the EAST team. Parameters: (1) Gains: 0.1, 0.5, 1, 2, 5, 10, 20, 50 (2) -3dB bandwidth: 500 kHz when gain=1 (3) Noise: less than 10 mV when gain=1 (4) Output range: -10 V to +10V

Data acquisition device and server 250KS/s 1MS/s ~10MS/s PXI2022: 16-CH/card,16-bit resolution PXIe-6368: 6-CH/card, 16-bit resolution PXIe-5105: 8-CH/card, 12-bit resolution R730 Data Storage Data Service CPU: 2 X Intel Xeon E5-2609v3 RAM: 16GB Disk: 8 X 4TB

Data Access B/S C/S High-level language interface for MATLAB WebScope A web tool for data visualization. Data source : HDF5 & MDSplus. Single or multiple signal display. Windows / linux / mac . C/S High-level language interface for MATLAB （Window 7 32-bit / Window 7 64-bit / Centos 64-bit)

Plasma current IP1,IP2,IP3 in shot 508

OUTLINE Overview Central Control Data Acquisition Plasma Control Summary

Hardware Structure of KTX PCS

Software Function Modules of PCS

Main Control Algorithms of KTX PCS category Control content Algorithm Discharge shape Plasma current and position control Coil current control Limited plasma control (equilibrium field feedback control, error field feedback control) Gas injection Open loop for gas puffing Gas open-loop control Alarms Off-normal event detection Fault detection System Setting for command output System main algorithm

OUTLINE Introduction Centrol Control Data Acquisition Plasma Control Summary

Summary Central control system Data acquisition system has been running stably. More features will be added. Data acquisition system can deal with different diagnostic signals and provide data service. More data interface will be added. Plasma control system has been designed on EPICS. It provides kinds of control algorithms. It will be applied next year.

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