Share Email Print
cover

Proceedings Paper

Signal acquisition in Cherenkov-type diagnostics of electron beams within tokamak facilities
Author(s): Marek Rabiński; Lech Jakubowski; Marek J. Sadowski; Jarosław Żebrowski; Marcin J. Jakubowski; Karol Malinowski; Robert Mirowski
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

The paper presents feasibility and design studies of Cherenkov-type probes, a development of the measuring head construction designed for different tokamak devices, and in particular the acquisition of optical signals to a data storage system. In order to lower the energy threshold of the electron detection the authors applied radiators with the highest values of the refractive index. Different radiator materials, such as aluminium nitride and CVD diamond were applied. Several versions of measuring heads and different manipulators, e.g., a movable vacuum-tight shaft or a fast-moving reciprocating probe, were manufactured and used. The practical application of the Cherenkov probes required also a consideration of spectral characteristics of optical fibres and photomultipliers. The Cherenkov radiation, as generated inside the radiators, is lead out through separate fibres (optical cables) to the atmospheric pressure side. The emitted radiation in the blue (near ultraviolet) spectrum range should be collected and delivered through appropriate optical cables to a control room, amplified within photomultipliers and recorded in a digital form. In order to investigate an electron energy distribution the multi-channel probes have also been designed and applied.

Paper Details

Date Published: 11 September 2015
PDF: 7 pages
Proc. SPIE 9662, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2015, 96622Z (11 September 2015); doi: 10.1117/12.2205872
Show Author Affiliations
Marek Rabiński, National Ctr. for Nuclear Research (Poland)
Lech Jakubowski, National Ctr. for Nuclear Research (Poland)
Marek J. Sadowski, National Ctr. for Nuclear Research (Poland)
Jarosław Żebrowski, National Ctr. for Nuclear Research (Poland)
Marcin J. Jakubowski, National Ctr. for Nuclear Research (Poland)
Karol Malinowski, National Ctr. for Nuclear Research (Poland)
Robert Mirowski, National Ctr. for Nuclear Research (Poland)


Published in SPIE Proceedings Vol. 9662:
Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2015
Ryszard S. Romaniuk, Editor(s)

© SPIE. Terms of Use
Back to Top