FIRST-PACS: design and performance of the sensor engineering models

Details FIRST-PACS: design and performance of the sensor engineering models FIRST-PACS: design and performance of the sensor engineering models

Jul 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000spie.4013..233k&link_type=abstract

Proc. SPIE Vol. 4013, p. 233-243, UV, Optical, and IR Space Telescopes and Instruments, James B. Breckinridge; Peter Jakobsen; E

Physics

Optics

3

Scientific paper

The Photoconductor Array Camera and Spectrometer (PACS) will be equipped with two sensor arrays consisting of 16 X 25 pixels each. Arranged in linear arrays of 16 detectors the sensitivity of the sensors is tuned to the wavelength ranges 60 micrometers to 130 micrometers and 130 micrometers to 210 micrometers , by applying different levels of stress to the Ge:Ga crystal utilizing a special leaf spring which is part of each of the 25 modules. The electronics of the sensors are mounted on the same module but thermally isolated from the sensor level which is at a lower temperature of about 2 K. The sensors are read out by a specially developed integrating and multiplexing cryogenic read-out electronics. With a fore optics made of light cones in front of the detector cavities a 100% filling factor is achieved and a high quantum efficiency close to 0.5 is expected. In order to achieve extremely good stress uniformity in all detectors and therefore equal cutoff wavelengths, a high degree of the quality of the Ge:Ga detectors and of the assembling components used for this dedicated stress mechanism is required. The first 6 engineering modules have been successfully manufactured and tested afterwards. The relative responsivity of a set of pixels has been determined and a good performance has been demonstrated for the sensors, which are very close to fulfilling the requirements for PACS aboard the infrared spectra telescope FIRST.

Affiliated with

Also associated with

No associations

Rating

FIRST-PACS: design and performance of the sensor engineering models does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with FIRST-PACS: design and performance of the sensor engineering models, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and FIRST-PACS: design and performance of the sensor engineering models will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1482159