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Design and prototyping of SiPM electronics (view source)
Revision as of 23:30, 3 February 2009
, 23:30, 3 February 2009→Analog Amplifier
** [[MATLAB amplifier in detail]] - more information regarding the implementation of the MATLAB-based simulation of the amplifier circuit.
** [[MATLAB amplifier in detail]] - more information regarding the implementation of the MATLAB-based simulation of the amplifier circuit.
A similar amplifier circuit will be designed for every SiPM channel on the board. Those corresponding to a single column will be summed at some stage. Each board, however, will have the capacity for a column of independent channels, since the design of the tagger calls for five such columns in the array.
A similar amplifier circuit is necessary replicated for each SiPM in the tagger microscope. However, microscope readout calls for somewhat different design requirements and operating condition constraints. The following is a brief outline the demands on the amplifier design:
* adjustable gain, ranging from readout of hundreds of pixels to calibration with single-photon counting
* less than 15% gain variability on transistor <math>\beta</math> (<math>h_{FE}</math>) parameter
* summing circuit to pool SiPM signals in groups of 5
* minimized pulse duration
* minimized power consumption
A separate, second-stage driver will be added to feed the summing circuit (fiber array is read out in groups of 5 channels). The passive components of the circuit are being optimized for tagger use:
A full discussion of these along with steps taken to meet the new design goals are outlined in:
* [[SiPM Amplifier Optimization]]
* [[SiPM Amplifier Optimization]]
== Digital Control Boards ==
== Digital Control Boards ==