  The HASPIDE (Hydrogenated Amorphous Silicon PIxels DEtectors) project aims at
the development of thin hydrogenated amorphous silicon (a-Si:H) detectors on
flexible substrates (mostly Polyimide) for beam monitoring, neutron detection
and space applications. Since a-Si:H is a material with superior radiation
hardness, the benefit for the above-mentioned applications can be appreciated
mostly in radiation harsh environments. Furthermore, the possibility to deposit
this material on flexible substrates like Polyimide (PI), polyethylene
naphthalate (PEN) or polyethylene terephthalate (PET) facilitates the usage of
these detectors in medical dosimetry, beam flux and beam profile measurements.
Particularly interesting is its use when positioned directly on the flange of
the vacuum-to-air separation interface in a beam line, as well as other
applications where a thin self-standing radiation flux detector is envisaged.
In this paper, the HASPIDE project will be described and some preliminary
results on PI and glass substrates will be reported.
