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:''Main article: [[Characterizing SiPMs]]''

:''Main article: [[Characterizing SiPMs]]''

A search for a solid state photo-sensor satisfying the Tagger requirements has been conducted. The new Silicon Photomultipliers (SiPMs) are thought to fit this application better than the traditional Photo-Multiplier Tubes (PMTs) due to the nice properties of the former, including match of fiber cross section, low bias voltage and other factors. See the main page of this project for this design choice justification.

A search for a solid state photo-sensor satisfying the Tagger requirements has been conducted. The new Silicon Photomultipliers (SiPMs) are thought to fit this application better than the traditional Photo-Multiplier Tubes (PMTs) due to the nice properties of the former, including match of fiber cross section, low bias voltage and other factors. See the main page of this project for this design choice justification as well as detailed performance analysis of tested SiPMs produced by [[User:Senderovich|Igor Senderovich]] and Richard Jones.

 

 

 

 

A project pertaining to design and prototyping of electronics pertaining to bias, amplification and control of the photo-sensors described above has been conducted by Brendan Krueger, [[User:Senderovich|Igor Senderovich]], and Woody Underwood. Due to the expected variability of performance of these solid-state sensors, the electronics provides for individually selectable bias voltage, controlled amplification over a wide range of light intensities, as well as feedback on key on-board voltages and ambient temperature. Additionally, the summation of signals over scintillator channels vertical in the focal plane is incorporated.