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Proceedings Paper

CHAMP+: a powerful array receiver for APEX
Author(s): C. Kasemann; R. Güsten; S. Heyminck; B. Klein; T. Klein; S. D. Philipp; A. Korn; G. Schneider; A. Henseler; A. Baryshev; T. M. Klapwijk
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Paper Abstract

CHAMP+, a dual-color 2 × 7 element heterodyne array for operation in the 450 μm and 350 μm atmospheric windows is under development. The instrument, which is currently undergoing final evaluation in the laboratories, will be deployed for commissioning at the APEX telescope in August this year. With its state-of-the-art SIS detectors and wide tunable local oscillators, its cold optics with SSB filters and with 2 GHz of usable IF bandwidth per pixel, CHAMP+ will provide unmatched observing capabilities for the APEX community. The optics allows for simultaneous observations in both colors. For both sub-arrays a hexagonal arrangement with closest feasible spacing of the pixels on sky (2×Θmb) was chosen, which, in scanning mode, will provide data sampled with half-beam spacing. The front-end is connected to a flexible autocorrelator array with a total bandwidth of 32 GHz and 32768 spectral channels, subdivided into 32 IF bands of 1 GHz and 1024 channels each.

Paper Details

Date Published: 27 June 2006
PDF: 12 pages
Proc. SPIE 6275, Millimeter and Submillimeter Detectors and Instrumentation for Astronomy III, 62750N (27 June 2006); doi: 10.1117/12.670810
Show Author Affiliations
C. Kasemann, Max-Planck-Institut für Radioastronomie (Germany)
R. Güsten, Max-Planck-Institut für Radioastronomie (Germany)
S. Heyminck, Max-Planck-Institut für Radioastronomie (Germany)
B. Klein, Max-Planck-Institut für Radioastronomie (Germany)
T. Klein, Max-Planck-Institut für Radioastronomie (Germany)
S. D. Philipp, Max-Planck-Institut für Radioastronomie (Germany)
A. Korn, Max-Planck-Institut für Radioastronomie (Germany)
G. Schneider, Max-Planck-Institut für Radioastronomie (Germany)
A. Henseler, Max-Planck-Institut für Radioastronomie (Germany)
A. Baryshev, SRON Netherlands Institute for Space Research (Netherlands)
T. M. Klapwijk, Delft Univ. of Technology (Netherlands)

Published in SPIE Proceedings Vol. 6275:
Millimeter and Submillimeter Detectors and Instrumentation for Astronomy III
Jonas Zmuidzinas; Wayne S. Holland; Stafford Withington; William D. Duncan, Editor(s)

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