Detector Design
From Hall A Wiki
Coordinate Detector Design
CDet is comprised of many fiber optic cable bundles, scintillation paddles, NINO cards and PMT's. The designs for CDET before construction can be found on the Coordinate Detector page.
Module Composition
CDet is composed of 6 modules, each containing 392 scintillation paddles. In each paddle, a green fiber optic cable threaded through the center to carry the scintillation light to the front of a PMT pixel. Groups of 14 paddles are connected to a single PMT, which is connected to a single High Voltage supply. Each PMT is connected to a NINO discriminator card. The ADC signal is then sent through delay cables into the Fastbus DAQ unit, at the same time the TDC signal is sent directly to the Fastbus DAQ.
