Differences

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--- k500:k500_generaltuning [2025/08/07 18:56] – created lange
+++ k500:k500_generaltuning [2025/08/07 19:09] (current) – lange
@@ Line 15: / Line 15: @@
 === 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.
+There is an added complication when running cocktail beams. Each beam species overlaps in the injection line, and some may be at higher intensities than the other. This means that tuning on a faraday cup in the injection line may bias the tune towards one or the other species which might not be desirable. It is best to spend time tuning the injection line on accelerated pilot beam (ie the beam at the center of the range of epsilons in the cocktail)
 === Extraction Tuning ===
@@ Line 22: / Line 24: @@
   * The beamspot shape may change. This could affect transmission to SEE.
-=== HEBT Tuning ===
-From limited experience, here are a few suggestions for adjusting the HEBT
+[[k500:k500_HEBTtuning|HEBT Tuning]]
-  * Begin from scaled focusing elements and these may be close to what is needed.
-  * Quad centering in the first HEBT section may be productive. Do this on the viewer D???? and the stub faraday cup.
-  * Adjust the dipoles to maximize beam current to FC2192 and/or center on viewer D2191. The correctors after the dipoles should be able to be set to 0.
-  * With small beam optics, you may need to adjust the 1st four quads to maximize transmission. The beam size out of the cyclotron may be different.