Spark damage studies of microgap gas chambers with various anode strip metals

Since the effects of spark damage by discharges and aging are very sensitive to metal used for anode strips, several microgap gas chambers (MGCs) have been fabricated with various anode strip metals: aluminum, gold, chromium, nickel, and titanium-tungsten, and a systematic study of spark damage effects has been made to compare their relative sensitivity to failure, over a range of electrical discharge energies. The results of aging studies are being presented separately.