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Author Yagoubov, P.; van de Stadt, H.; Hoogeveen, R.; Koshelets, V.; Birk, Manfred; Murk, A. url  openurl
  Title OPTICAL DESIGN OF SUB-MILLIMETER SPECTROMETER FOR LIMB SOUNDER Type Journal Article
  Year (up) 2005 Publication International Symposium on Space Terahertz Technology Abbreviated Journal  
  Volume Issue Pages  
  Keywords Cryogenic terahertz heterodyne receiver, remote sensing, TELIS, submillimeter  
  Abstract TELIS (Terahertz and submm Limb Sounder) is a cooperation between DLR (Institute for Remote Sensing Technology, Germany), RAL (Rutherford Appleton Laboratories, UK) and SRON (National Institute for Space Research, the Netherlands), to build a three-channel balloon-borne heterodyne spectrometer for atmospheric research. The three receivers will operate simultaneously at 500 GHz (channel developed by RAL), at 550-650 GHz (SRON in collaboration with IREE), and at 1.8 THz (DLR). The balloon platform on which TELIS will fly also contains a Fourier transform spectrometer: MIPAS-B developed by the IMK (Institute of Meteorology and Climate research of the University of Karlsruhe, Germany). MIPAS-B will simultaneously measure within the range 680 to 2400 cm-1. The combination of the TELIS and MIPAS instruments will provide an unprecedented wealth of scientific data and will also be used to validate other instruments and atmospheric chemistry models. In this paper we present the optical design of TELIS with an emphasis on the 550-650 GHz channel. The main design goal was to generate a high efficiency antenna beam over the full frequency range, with low side lobes and close to diffraction limited angular resolution in the vertical direction at the sky. All these requirements had to be achieved within a small volume and low mass. Design and validation of the optics, as well as estimation of optical components tolerances, was done using commercial software packages ZEMAX and GRASP.  
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  Notes event_dates=2005-05-31 – 2005-06-03; Approved no  
  Call Number Serial 414  
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Author de Graauw, T.; Caux, E.; Guesten, R.; Helmich, F.; Pearson, J.; Phillips, T. G.; Schieder, R.; Tielens, X.; Saraceno, P.; Stutzki, J.; Wafelbakker, C. K.; Whyborn, N. D. openurl 
  Title The Herschel-heterodyne instrument for the far-infrared (HIFI) Type Conference Article
  Year (up) 2005 Publication Bulletin of the American Astronomical Society Abbreviated Journal  
  Volume Issue Pages 1219  
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  Series Editor Series Title Bulletin of the American Astronomical Society Abbreviated Series Title  
  Series Volume 37 Series Issue Edition  
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  Area Expedition Conference  
  Notes Approved no  
  Call Number ref2005AAS...207.3503D Serial 420  
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Author Cherednichenko, S.; Kollberg, E.; Angelov, I.; Drakinskiy, V.; Berg, T.; Merkel, H. openurl 
  Title Effect of the direct detection effect on the HEB receiver sensitivity calibration Type Conference Article
  Year (up) 2005 Publication Proc. 16th Int. Symp. Space Terahertz Technol. Abbreviated Journal  
  Volume Issue Pages 235-239  
  Keywords HEB, mixer, direct detection effect  
  Abstract We analyze the scale of the HEB receiver sensitivity calibration error caused by the so called “direct detection effect”. The effect comes from changing of the HEB parameters when whey face the calibration loads of different temperatures. We found that for HIFI Band 6 mixers (Herschel Space Observatory) the noise temperature error is of the order of 8% for 300K/77K loads (lab receiver) and 2.5% for 100K/10K loads (in HIFI). Using different approach we also predict that with an isolator between the mixer and the low noise amplifiers the error can be much smaller.  
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  Publisher Place of Publication Göteborg, Sweden Editor  
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  Notes Approved no  
  Call Number Serial 360  
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Author Karpov, A.; Miller, D.; Stern, J. A.; Bumble, B.; LeDuc, H. G.; Zmuidzinas, J. openurl 
  Title Low noise NbTiN 1.25 THz SIS mixer for Herschel Space Observatory Type Conference Article
  Year (up) 2005 Publication Proc. 16th Int. Symp. Space Terahertz Technol. Abbreviated Journal  
  Volume Issue Pages 450  
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  Publisher Place of Publication Göteborg, Sweden Editor  
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  Notes Approved no  
  Call Number RPLAB @ s @ nt_SIS_760at1p25THz Serial 359  
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Author Marrone, Daniel P.; Raymond Blundell; Edward Tong; Paine, Scott. N.; Denis Loudkov; Jonathan Kawamura; Daniel Luhr; Claudio Barrientos openurl 
  Title Observations in the 1.3 and 1.5 THz atmospheric windows with the Receiver Lab Telescope Type Conference Article
  Year (up) 2005 Publication Proc. 16th Int. Symp. Space Terahertz Technol. Abbreviated Journal  
  Volume Issue Pages 64-67  
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  Publisher Place of Publication Göteborg, Sweden Editor  
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  Notes Approved no  
  Call Number RPLAB @ s @ RLT_observ Serial 361  
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