Performance of microgap gas chambers fabricated with selected anode metals

Microgap gas chambers (MGCs) fabricated with selected anode metals, including aluminum, gold, chromium, and nickel, have been used in order to study the properties of gas gain, aging, and spark damage by discharges. In this paper, we present studies of the behavior of gas gain with respect to several operating parameters, and the accelerated aging. The results of spark damage tests are being presented separately.