Production of RPC gaps for the PHENIX upgrade

The PHENIX collaboration intends to probe the flavor-dependent quark and anti-quark polarization in the proton and, in order to achieve these physics goals, Resistive Plate Chambers (RPCs) are being installed in the two existing muon spectrometers to allow the muon trigger detector to tag high momentum muons from the decay of W bosons. In this paper, we present the detailed procedures used in the production of the PHENIX RPC gas gaps. The same procedures were followed in the production of the CMS forward RPC gas gaps. Quality assurance is enforced as for the CMS chambers. Both the production procedures and the quality assurance are mature and effective for the mass production of these RPC gas gaps.