  There are several applications and fundamental research areas which require
the detection of VUV light at cryogenic temperatures. For these applications we
have developed and successfully tested special designs of gaseous detectors
with solid photocathodes able to operate at low temperatures: sealed gaseous
detectors with MgF2 windows and windowless detectors. We have experimentally
demonstrated, that both primary and secondary (due to the avalanche
multiplication inside liquids) scintillation lights could be recorded by
photosensitive gaseous detectors. The results of this work may allow one to
significantly improve the operation of some noble liquid gas TPCs.
