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M.A.D. PROJECT
M.A.D. (Multi Array Detector)
MAD 4 (pixels) MITO (Millimeter-Infrared Testagrigia Observatory) is a multipixel photometer
with 4-simultaneous spectral bands. MAD is born as the upgrade of the existing instrument
currently at the MITO facility. Thanks to the experience obtained with this instrument in
cryogenic, mechanic and electronic fields, we think to be able to reduce considerably
construction and testing times.
It's scientific purpose is that of measuring Sunyaev-Zel'dovich effect and anisotropies in the
Cosmic Background Radiation, and with further implementation set some interesting limits on the
polarized background.
MAD, as it's predecessor, will employ a double-stadium refrigerator (combined He3 and He4)
with it's optic box of 4 sets of 9 detectors (each with it's own Winston cone) in the upper
part of the instrument, to facilitate it's estraction. Multi-mesh beamsplitters will separate
radiation in it's converging path from the last optical element (lens or mirror) to the
refocalizing plane (where the cone entrances are). |
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Last Updated:
Comments and Questions
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Giorgio Savini
Giorgio Savini & Luca Lamagna
August 6, 2001
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