1. 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

2. OUTLINE Overview Central Control Data Acquisition Plasma Control
Summary

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

4. 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

5. OUTLINE Overview Central Control Data Acquisition Plasma Control
Summary

6. 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

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

8. 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

9. 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

10. 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

11. 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

12. 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)

13. Plasma current IP1,IP2,IP3 in shot 508

14. OUTLINE Overview Central Control Data Acquisition Plasma Control
Summary

15. Hardware Structure of KTX PCS

16. Software Function Modules of PCS

17. 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

18. OUTLINE Introduction Centrol Control Data Acquisition Plasma Control
Summary

19. 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.

20. Thanks for your attentions!