Development and first experimental tests of Faraday cup array

0509335 - ÚFP 2020 RIV US eng J - Journal Article
Prokůpek, J. - Kaufman, J. - Margarone, D. - Krůs, Miroslav - Velyhan, A. - Krása, J. - Burris-Mog, T. - Busold, S. - Deppert, O. - Cowan, T.E. - Korn, G.
Development and first experimental tests of Faraday cup array.
Review of Scientific Instruments. Roč. 85, č. 1 (2014), č. článku 013302. ISSN 0034-6748. E-ISSN 1089-7623
R&D Projects: GA MŠMT LM2010014
Institutional support: RVO:61389021
Keywords : laser * plasma * emission * detector * design * ions
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 1.614, year: 2014
Method of publishing: Limited access
https://aip.scitation.org/doi/10.1063/1.4859496

A new type of Faraday cup, capable of detecting high energy charged particles produced in a high intensity laser-matter interaction environment, has recently been developed and demonstrated as a real-time detector based on the time-of-flight technique. An array of these Faraday cups was designed and constructed to cover different observation angles with respect to the target normal direction. Thus, it allows reconstruction of the spatial distribution of ion current density in the subcritical plasma region and the ability to visualise its time evolution through time-of-flight measurements, which cannot be achieved with standard laser optical interferometry. This is a unique method for two-dimensional visualisation of ion currents from laser-generated plasmas. A technical description of the new type of Faraday cup is introduced along with an ad hoc data analysis procedure. Experimental results obtained during campaigns at the Petawatt High-Energy Laser for Heavy Ion Experiments (GSI, Darmstadt) and at the Prague Asterix Laser System (AS CR) are presented. Advantages and limitations of the used diagnostic system are discussed.
Permanent Link: http://hdl.handle.net/11104/0300084