CHAMP+: A powerful array receiver for APEX

CHAMP+: A powerful array receiver for APEX

Kasemann, C.
Güsten, R.
Heyminck, S.
Klein, B.
Klein, T.
Philipp, S.D.
Korn, A.
Schneider, G.
Henseler, A.
Baryshev, A.
Klapwijk, T.M.

Applied Sciences

Kavli Institute of Nanoscience

2006-06-14

CHAMP+, a dual-color 2 × 7 element heterodyne array for operation in the 450 ?m and 350 ?m 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·?mb) 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.

submillimeter array receivers
heterodyne array

http://resolver.tudelft.nl/uuid:ba40fe98-4c11-48bf-bbd2-eddf1bd28f27

SPIE

0277-786X

Proceedings of SPIE, 2006 vol. 6275

Institutional Repository

conference paper

(c)2006 Kasemann, C., Güsten, R., Heyminck, S., Klein, B., Klein, T., Philipp, S.D., Korn, A., Schneider, G., Henseler, A., Baryshev, A., Klapwijk, T.M.