Changes

The pages listed here describe the work in electronics undertaken to support Silicon Photomultiplier (SiPM) based  readout of the Tagger Microscope for JLab Hall-D and the GlueX experiment in particular. The working design concept for the Tagger's readout involves an array of PCB boards with SiPMs and their amplifiers, summing circuits etc. suspended in a light-tight box out of the plane of incoming electrons. Each of these "amplifier" or "analog" boards are connected across a light-sealing bus board to a "control" or "digital" board. The latter set of boards principally contain bias voltage control circuitry and an architecture that allows Ethernet-based communication with a controlling PC. The merits of this two-tier design is the ease with which the tagger can be wired without introducing light leaks and the separation between digital circuits and analog amplifiers to reduce noise. The adjacent diagram outlines the basic scheme.

The pages listed here describe the work in electronics undertaken to support Silicon Photomultiplier (SiPM) based  readout of the Tagger Microscope for JLab Hall-D and the GlueX experiment in particular. The working design concept for the Tagger's readout involves an array of PCB boards with SiPMs and their amplifiers, summing circuits etc. suspended in a light-tight box out of the plane of incoming electrons. Each of these "amplifier" or "analog" boards are connected across a light-sealing bus board to a "control" or "digital" board. The latter set of boards principally contain bias voltage control circuitry and an architecture that allows Ethernet-based communication with a controlling PC. The merits of this two-tier design is the ease with which the tagger can be wired without introducing light leaks and the separation between digital circuits and analog amplifiers to reduce noise. The adjacent diagram outlines the basic scheme.