The Successful Operation of Hole-type Gaseous Detectors at Cryogenic   Temperatures
  We have demonstrated that hole-type gaseous detectors, GEMs and capillary plates, can operate up to 77 K. For example, a single capillary plate can operate at gains of above 10E3 in the entire temperature interval between 300 until 77 K. The same capillary plate combined with CsI photocathodes could operate perfectly well at gains (depending on gas mixtures) of 100-1000. Obtained results may open new fields of applications for capillary plates as detectors of UV light and charge particles at cryogenic temperatures: noble liquid TPCs, WIMP detectors or LXe scintillating calorimeters and cryogenic PETs. 
L. Pereiale, V. Peskov, C. Iacobaeus, T. Francke, B. Lund-Jensen, P.   Pavlopoulos, P. Picchi, F. Pietropaolo, F.Tokanai