A compact, smart Langmuir Probe control module for MAST-Upgrade.

0481463 - ÚFP 2018 RIV GB eng J - Journal Article
Lovell, J. - Stephen, R. - Bray, S. - Naylor, G. - Elmore, S. - Willett, H. - Peterka, Matěj - Dimitrova, Miglena - Havránek, Aleš - Hron, Martin - Sharples, R.
A compact, smart Langmuir Probe control module for MAST-Upgrade.
Journal of Instrumentation. Roč. 12, November (2017), č. článku C11008. ISSN 1748-0221. E-ISSN 1748-0221.
[European Conference on Plasma Diagnostics (ECPD2017)/2./. Bordeaux, 18.04.2017-21.04.2017]
R&D Projects: GA MŠMT(CZ) LM2015045; GA ČR(CZ) GA16-24724S; GA ČR(CZ) GA16-25074S
Institutional support: RVO:61389021
Keywords : Plasma diagnostics - probes * Data acquisition circuits * Digital electronic circuits * Modular electronics
OECD category: 2.11 Other engineering and technologies
Impact factor: 1.258, year: 2017

A new control module for the MAST-Upgrade Langmuir Probe system has been developed. It is based on a Xilinx Zynq FPGA, which allows for excellent configurability and ease of retrieving data. The module is capable of arbitrary bias voltage waveform generation, and digitises current and voltage readings from 16 probes. The probes are biased and measured one at a time
in a time multiplexed fashion, with the multiplexing sequence completely configurable. In addition, simultaneous digitisation of the floating potential of all unbiased probes is possible. A suite of these modules, each coupled with a high voltage amplifier, enables biasing and digitisation of 640 Langmuir Probes in the MAST-Upgrade Super-X divertor. The system has been successfully
tested on the York Linear Plasma Device and on the COMPASS tokamak. It will be installed on MAST-Upgrade ready for operations in 2018.
Permanent Link: http://hdl.handle.net/11104/0277230