Electronic system for Langmuir probe measurements

被引：14

作者：

Mitov, M. ^{[1
]}

Bankova, A. ^{[1
]}

Dimitrova, M. ^{[2
]}

Ivanova, P.

Tutulkov, K. ^{[1
]}

Djermanova, N. ^{[1
]}

Dejarnac, R. ^{[3
]}

Stoeckel, J.

Popov, Tsv K. ^{[1
]}

机构：

[1] St Kl Ohridski Univ Sofia, Fac Phys, 5 J Bourchier Blvd, Sofia 1164, Bulgaria

[2] Bulgarian Acad Sci, Emil Djakov Inst Elect, Sofia 1784, Bulgaria

[3] Acad Sci Czech Republic, Inst Plasma Phys, Prague 18200, Czech Republic

来源：

17TH INTERNATIONAL SUMMER SCHOOL ON VACUUM, ELECTRON, AND ION TECHNOLOGIES (VEIT 2011) | 2012年 / 356卷

关键词：

D O I：

10.1088/1742-6596/356/1/012008

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A newly developed Langmuir probe system for measurements of current-voltage (IV) characteristics in the tokamak divertor area is presented and discussed. The system is partially controlled by a computer allowing simultaneous and independent feeding and registration of signals. The system is mounted in the COMPASS tokamak, Institute of Plasma Physics, Academy of Sciences of the Czech Republic. The new electronic circuit boards include also active low-pass filters which smooth the signal before recording by the data acquisition system (DAQ). The signal is thus less noisy and the data processing is much easier. We also designed and built a microcontroller-driven waveform generator with resolution of 1 Ms/s. The power supply is linear and uses a transformer. We avoided the use of a switching power supply because of the noise that it could generate. Examples of measurements of the IV characteristics by divertor probes in the COMPASS tokamak and evaluation of the EEDF are presented.

引用

页数：4

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