MCA FOCAL

This document describes MCA FOCAL, a modified FOCAL programming language interpreter designed for the PDP-9 and PDP-15 computers. It enables users to control the acquisition of multichannel pulse height data and perform data analysis. The system utilizes a switch panel, a CRT display with a light pen, and dual Analog-to-Digital Converters (ADCs). The report details the hardware and software requirements, the functional control panel, and a comprehensive list of MCA FOCAL functions for data acquisition, manipulation, and display. It also includes a program example for performing simple pulse height analysis and provides appendices on the PHA program listing, loading procedures, and implementation details.