Arc Energy Measurement

The ARC energy measurement is under EPICS control through a MEDM display. Two independent control systems are used: the beam bend angle measurement through the arc ("scanners") and the field integral of the arc ("integral"). To measure the energy:

• perform several angle measurements
• perform an integral measurement
• analyze the integral measurement and note the value of the arc field integral
• analyze the angle measurements, average the results (proposed by the software), then ask for the energy calculation, enter the above arc field integral and you will get the beam energy computed from the average angle.