Program and Abstract Book - SRON
Program and Abstract Book - SRON
Program and Abstract Book - SRON
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
19 th International Symposium on Space Terahertz Technology<br />
6-3<br />
CHAMP+: A powerful sub-millimeter heterodyne array<br />
S. Heyminck 1) , R. Güsten 1) , B. Klein 1) , C. Kasemann 1) , A. Baryshev 2) , T.M. Klapwijk 3)<br />
1) Max-Planck-Institute für Radioastronomie, 2) <strong>SRON</strong> Netherl<strong>and</strong>s Institute for Space Research,<br />
3) Delft University of Technology<br />
To make best use of the exceptional weather conditions at Chajnantor we developed<br />
CHAMP+, a two times seven pixel dual-colour heterodyne array for operation in the 350<br />
<strong>and</strong> 450 mu atmospheric windows.<br />
CHAMP+ uses state-of-the-art SIS-mixers provided by our collaborators at <strong>SRON</strong>. To<br />
maximize its performance, optical single-sideb<strong>and</strong> filter are implemented for each of the<br />
two sub-arrays, <strong>and</strong> most of the optics is operated cold (20K) to minimize noise<br />
contributions.<br />
The instrument can be operated remotely, under full computer control of all components.<br />
The autocorrelator backend, currently in operation with 2 x 1 GHz of b<strong>and</strong>width for each<br />
of the 14 heterodyne channels, will be upgraded by a new technologies FFT spectrometer<br />
array in mid 2008.<br />
CHAMP+ has been commissioned successfully in late 2007. We will review the<br />
performance of the instrument “in the field”, <strong>and</strong> present its characteristics as measured<br />
on-sky.<br />
56