Investigation of metallization suitable for gas avalanche microdetectors

Selected metals, such as aluminum, gold, chromium, nickel, titanium/tungsten (10%/90%) and tungsten, were used for the anode in the fabrication of microgap chambers (MGCs), in order to investigate metallization suitable for gas avalanche microdetectors that will be both highly robust against sparking and yet have sufficiently low resistivity to permit larger sizes of detectors without excessive signal loss. In this paper, the results of spark damage tests with these metals are presented, and an interpretation is made regarding the viability of uses of these metals for larger sizes of detectors.