W
W. Croukamp
Researcher at Stellenbosch University
Publications - 4
Citations - 31
W. Croukamp is an academic researcher from Stellenbosch University. The author has contributed to research in topics: Redshift & Radiometer. The author has an hindex of 1, co-authored 1 publications receiving 10 citations.
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Journal ArticleDOI
The REACH radiometer for detecting the 21-cm hydrogen signal from redshift z ≈ 7.5–28
Eloy de Lera Acedo,Dirk I. L. de Villiers,Nima Razavi-Ghods,Will Handley,Anastasia Fialkov,Alessio Magro,D. A. Anstey,H.T.J. Bevins,Riccardo Chiello,J. Cumner,Alec Josaitis,I. L. V. Roque,Peter Sims,Kilian H. Scheutwinkel,Paul Alexander,Gianni Bernardi,Steven Carey,Jean Cavillot,W. Croukamp,John Ely,Thomas Gessey-Jones,Quentin Gueuning,R. Hills,Gauri V. Kulkarni,Roberto Maiolino,P. Daniel Meerburg,Shikhar Mittal,Jonathan K. Pritchard,Ewald Puchwein,A. Saxena,E Shen,Oleg Smirnov,M. Spinelli,Kristian Zarb-Adami +33 more
TL;DR: The Radio Experiment for the Analysis of Cosmic Hydrogen (REACH) is a sky-averaged 21 cm experiment aiming at improving the current observations by tackling the issues faced by current instruments related to residual systematic signals in the data as mentioned in this paper .
Proceedings ArticleDOI
Dynamic RFI measurement systems on a ROACH-2 platform ICEAA-IEEE APWC-EMS
Adele Botha,Howard C. Reader,Jason Manley,S. Malan,H. K. Kriel,P. S. van der Merwe,Petrie Meyer,P.W. van der Walt,W. Croukamp,R. J. Anderson +9 more
TL;DR: Two different strategies were followed in designing the RF front-end systems for signal conditioning prior to digitisation: a single mixer, down-converting topology, and a multiple Nyquist-zone sampling configuration, which are evaluated and compared in this paper.
Journal ArticleDOI
Author Correction: The REACH radiometer for detecting the 21-cm hydrogen signal from redshift z ≈ 7.5–28
Eloy de Lera Acedo,Dirk I. L. de Villiers,Nima Razavi-Ghods,Will Handley,Anastasia Fialkov,Alessio Magro,D. A. Anstey,H.T.J. Bevins,Riccardo Chiello,J. Cumner,Alec Josaitis,I. L. V. Roque,Peter Sims,Kilian H. Scheutwinkel,Paul Alexander,Gianni Bernardi,Steven Carey,Jean Cavillot,W. Croukamp,John Ely,Thomas Gessey-Jones,Quentin Gueuning,R. Hills,Gauri V. Kulkarni,Roberto Maiolino,P. Daniel Meerburg,Shikhar Mittal,Jonathan K. Pritchard,Ewald Puchwein,A. Saxena,E Shen,Oleg Smirnov,M. Spinelli,Kristian Zarb-Adami +33 more
Receiver design for the REACH global 21-cm signal experiment
Nima Razavi-Ghods,I. L. V. Roque,Steven Carey,John Ely,Will Handley,Alessio Magro,Riccardo Chiello,Tian Huang,Paul Alexander,D. A. Anstey,Gianni Bernardi,H.T.J. Bevins,Jean Cavillot,W. Croukamp,J. Cumner,Eloy de Lera Acedo,Dirk I. L. de Villiers,Anastasia Fialkov,Thomas Gessey-Jones,Quentin Gueuning,Alec Josaitis,Gauri V. Kulkarni,S. A. K. Leeney,Roberto Maiolino,P. Daniel Meerburg,Surbhi Mittal,Marco Pagano,Saurabh Pegwal,Carla Pieterse,Jonathan K. Pritchard,A. Saxena,Kilian H. Scheutwinkel,Pat Scott,E Shen,Peter Sims,Oleg Smirnov,M. Spinelli,Kristian Zarb-Adami +37 more
TL;DR: In this paper , the authors detail the REACH radiometric system designed to enable measurements of the 21-cm neutral hydrogen line and discuss the challenges intrinsic to highly-calibratable system development.