Performance of MSGC on diamond-coated glass

A microstrip detector on ionic conducting glass suffers from the irreversible modifications of the substrate, which leads to changes of the gas amplification, and more seriously the amplification becomes rate-dependent. A recent solution consists in coating ionic conducting glasses with a layer of diamond like carbon (DLC). In this contribution, results are reported on the stability and rate capability of plates coated either before or after the lithography (under and overcoating) process.