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Hall GN, Burdiak GC, Suttle L, Stuart NH, Swadling GF, Lebedev SV, Smith RA, Patankar S, Suzuki-Vidal F, de Grouchy P, Harvey-Thompson AJ, Bennett M, Bland SN, Pickworth L, Skidmore J. Monochromatic radiography of high energy density physics experiments on the MAGPIE generator. Rev Sci Instrum 2014; 85:11D608. [PMID: 25430184 DOI: 10.1063/1.4890262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A monochromatic X-ray backlighter based on Bragg reflection from a spherically bent quartz crystal has been developed for the MAGPIE pulsed power generator at Imperial College (1.4 MA, 240 ns) [I. H. Mitchell et al., Rev. Sci. Instrum. 67, 1533 (2005)]. This instrument has been used to diagnose high energy density physics experiments with 1.865 keV radiation (Silicon He-α) from a laser plasma source driven by a ∼7 J, 1 ns pulse from the Cerberus laser. The design of the diagnostic, its characterisation and performance, and initial results in which the instrument was used to radiograph a shock physics experiment on MAGPIE are discussed.
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Affiliation(s)
- G N Hall
- The Blackett Laboratory, Imperial College, London SW7 2BW, United Kingdom
| | - G C Burdiak
- The Blackett Laboratory, Imperial College, London SW7 2BW, United Kingdom
| | - L Suttle
- The Blackett Laboratory, Imperial College, London SW7 2BW, United Kingdom
| | - N H Stuart
- The Blackett Laboratory, Imperial College, London SW7 2BW, United Kingdom
| | - G F Swadling
- The Blackett Laboratory, Imperial College, London SW7 2BW, United Kingdom
| | - S V Lebedev
- The Blackett Laboratory, Imperial College, London SW7 2BW, United Kingdom
| | - R A Smith
- The Blackett Laboratory, Imperial College, London SW7 2BW, United Kingdom
| | - S Patankar
- The Blackett Laboratory, Imperial College, London SW7 2BW, United Kingdom
| | - F Suzuki-Vidal
- The Blackett Laboratory, Imperial College, London SW7 2BW, United Kingdom
| | - P de Grouchy
- The Blackett Laboratory, Imperial College, London SW7 2BW, United Kingdom
| | | | - M Bennett
- The Blackett Laboratory, Imperial College, London SW7 2BW, United Kingdom
| | - S N Bland
- The Blackett Laboratory, Imperial College, London SW7 2BW, United Kingdom
| | - L Pickworth
- The Blackett Laboratory, Imperial College, London SW7 2BW, United Kingdom
| | - J Skidmore
- The Blackett Laboratory, Imperial College, London SW7 2BW, United Kingdom
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Swadling GF, Lebedev SV, Hall GN, Patankar S, Stewart NH, Smith RA, Harvey-Thompson AJ, Burdiak GC, de Grouchy P, Skidmore J, Suttle L, Suzuki-Vidal F, Bland SN, Kwek KH, Pickworth L, Bennett M, Hare JD, Rozmus W, Yuan J. Diagnosing collisions of magnetized, high energy density plasma flows using a combination of collective Thomson scattering, Faraday rotation, and interferometry (invited). Rev Sci Instrum 2014; 85:11E502. [PMID: 25430344 DOI: 10.1063/1.4890564] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A suite of laser based diagnostics is used to study interactions of magnetised, supersonic, radiatively cooled plasma flows produced using the Magpie pulse power generator (1.4 MA, 240 ns rise time). Collective optical Thomson scattering measures the time-resolved local flow velocity and temperature across 7-14 spatial positions. The scattering spectrum is recorded from multiple directions, allowing more accurate reconstruction of the flow velocity vectors. The areal electron density is measured using 2D interferometry; optimisation and analysis are discussed. The Faraday rotation diagnostic, operating at 1053 nm, measures the magnetic field distribution in the plasma. Measurements obtained simultaneously by these diagnostics are used to constrain analysis, increasing the accuracy of interpretation.
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Affiliation(s)
- G F Swadling
- Plasma Physics Group, Imperial College, London SW6 7LZ, United Kingdom
| | - S V Lebedev
- Plasma Physics Group, Imperial College, London SW6 7LZ, United Kingdom
| | - G N Hall
- Plasma Physics Group, Imperial College, London SW6 7LZ, United Kingdom
| | - S Patankar
- Plasma Physics Group, Imperial College, London SW6 7LZ, United Kingdom
| | - N H Stewart
- Plasma Physics Group, Imperial College, London SW6 7LZ, United Kingdom
| | - R A Smith
- Plasma Physics Group, Imperial College, London SW6 7LZ, United Kingdom
| | | | - G C Burdiak
- Plasma Physics Group, Imperial College, London SW6 7LZ, United Kingdom
| | - P de Grouchy
- Plasma Physics Group, Imperial College, London SW6 7LZ, United Kingdom
| | - J Skidmore
- Plasma Physics Group, Imperial College, London SW6 7LZ, United Kingdom
| | - L Suttle
- Plasma Physics Group, Imperial College, London SW6 7LZ, United Kingdom
| | - F Suzuki-Vidal
- Plasma Physics Group, Imperial College, London SW6 7LZ, United Kingdom
| | - S N Bland
- Plasma Physics Group, Imperial College, London SW6 7LZ, United Kingdom
| | - K H Kwek
- Plasma Physics Group, Imperial College, London SW6 7LZ, United Kingdom
| | - L Pickworth
- Plasma Physics Group, Imperial College, London SW6 7LZ, United Kingdom
| | - M Bennett
- Plasma Physics Group, Imperial College, London SW6 7LZ, United Kingdom
| | - J D Hare
- Plasma Physics Group, Imperial College, London SW6 7LZ, United Kingdom
| | - W Rozmus
- Department of Physics, University of Alberta, Edmonton, Alberta T6G 2J1, Canada
| | - J Yuan
- Key Laboratory of Pulsed Power, Institute of Fluid Physics, CAE, Mianyang 621900, China
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Gryaznevich M, Svoboda V, Stockel J, Sykes A, Sykes N, Kingham D, Hammond G, Apte P, Todd T, Ball S, Chappell S, Melhem Z, Ďuran I, Kovarik K, Grover O, Markovic T, Odstrcil M, Odstrcil T, Sindlery A, Vondrasek G, Kocman J, Lilley M, de Grouchy P, Kim HT. Progress in application of high temperature superconductor in tokamak magnets. Fusion Engineering and Design 2013. [DOI: 10.1016/j.fusengdes.2013.01.101] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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