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General Tuning
For the most part, all devices may be tuned to maximize the beam transmission. There are only a handful of devices that we don't tune: dee phases and trim coils (besides bumps). There are however devices that are more common to tune.
Standard K500 Tuning Devices
For a normal, quick tuneup of the k500, tune the following while sending beam to FC2007:
- Dee voltages K5DVR_A/B/C
- Centering bump magnitude and phase K5CM and K5CP
- Extraction bump magnitude and phase K5XM and K5XP
- Inflector voltage K5SICA-V and K5SIAN-V
- Injection steering J050DH and J051DE
- Main field epsilon
It is often useful to go through these devices multiple times since the effects of many devices are interrelated.
Injection Line Tuning
It is best the tune the injection line devices on accelerated beam, either on FC2007 or on the main probe inside the machine. In this configuration, you may be sure that the beam you are measuring is the correct one and not an analog. You will also be optimizing the beam for injection/extraction into the K500, rather than just beam transport to the end of the injection line. At this point, all devices may be tuned. Suggest to start with correctors, then focusing elements. Iteration is necessary. If time permits, it may help to quad center. This must be done using viewers. It is important to send beam into the k500 to see if the changes actually helped injection efficiency.
