Reference : The Herschel-PACS Grating Drive and its controller
Scientific congresses and symposiums : Paper published in a book
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/19765
The Herschel-PACS Grating Drive and its controller
English
Renotte, Etienne mailto [Université de Liège - ULg > > CSL (Centre Spatial de Liège) >]
Callut, Eric mailto [Université de Liège - ULg > > CSL (Centre Spatial de Liège) >]
Guiot, Marc mailto [Université de Liège - ULg > > CSL (Centre Spatial de Liège) >]
Gillis, Jean-Marie mailto [Université de Liège - ULg > > CSL (Centre Spatial de Liège) >]
Martin, Nicolas mailto [Université de Liège - ULg > > CSL (Centre Spatial de Liège) >]
Delvaux, Pierre mailto [Université de Liège - ULg > > CSL (Centre Spatial de Liège) >]
Marquet, Benoit mailto [Université de Liège - ULg > > CSL (Centre Spatial de Liège) >]
Plesseria, Jean-Yves mailto [Université de Liège - ULg > > CSL (Centre Spatial de Liège) >]
Montfort, Francis mailto [Université de Liège - ULg > > CSL (Centre Spatial de Liège) >]
Jamar, Claude mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO) >]
2003
No
International
54th International Astronautical Congress
28 Septembre 2003 au 3 Octobre 2003
Bremen
Germany
[en] Cryostats ; Herschel ; PACS ; Grating ; Cryogenics ; Cryogenic Mechanism ; Servo-Control
[en] The Photodetector Array Camera and Spectrometer (PACS), on board the Herschel Space Observatory, is designed for imaging and spectroscopy in the wavelength region between 60 and 210 gm. This paper reports the design of the grating cryogenic mechanism of the PACS spectrometer and its remote controller (DEC/MEC) located on the outside of the Herschel cryostat. The PACS grating shall be capable of accurate positioning (4 arcsec) within a large angular stroke (40 arcdeg) in cryogenic environment (4.2 K). Technologies of actuators, position sensors, pivots, dry lubricants, servo-control and cryogenic test set-up are presented. At the other end of the Herschel 10-meter high-impedance cryogenic harness, the DEC/MEC consists of DSP processor-based electronics that control and synchronise the cold focal plane mechanisms and infrared detector arrays. The DEC/MEC operates an on board software running under a real-time operating system. Technologies involved in the control electronics are discussed and correlated to validation tests conducted with actual hardwares.
http://hdl.handle.net/2268/19765

There is no file associated with this reference.

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.