LLRF9/500 Commissioned at ELSA

LLRF9/500 is a newly introduced low-level RF control solution from Dimtel, Inc. During two weeks from October 16^th through 25^th, the first production unit was commissioned at ELSA in Bonn. During commissioning, all features of the system were tested and verified. These include:

• Internal temperature stabilization;
• Cavity vector summing and field control;
• Hardware-triggered ramping of station voltage and phase;
• RF input interlocks (reflected power, forward power, overvoltage);
• Interlock daisy chain;
• Interlock timestamp capture;
• Tuner motor control (two tuners per cavity);
• Cavity field balancing;
• Extensive time- and frequency-domain diagnostics.

In commissioning, the system was shown to successfully support ELSA injection-ramping-extraction cycle, limited only by available RF power. After the commissioning period, the unit remains at ELSA on a long-term loan. It will be used in routine operation of the accelerator as well as in machine development studies.