AC

Alternate Current

ATCA

Advanced Telecommunications Computing Architecture

CPU

Central Processing Unit

EPICS

Experimental Physics and Industrial Control System

FPGA

Field Programmable Gate Array

IOC

Input Output Controller

LCLS

Linac Coherent Light Source

MDL

Main Drive Line

MO

Master Oscillator

NC

Normal-Conducting

RF

Radio Frequency

RFoF

RF-over-Fiber

SC

Super-Conducting

SHM

VMTG