
doi: 10.2172/10173577
In the new injection scenario antiprotons are injected onto a helical orbit in the Tevatron in order to avoid the detrimental effects of the beam-beam interaction at 150 GeV. The new scenario required changes in the tuning procedure. Antiprotons are too precious to be used for tuning, therefore the antiproton injection line has to be tuned with protons by reverse injecting them from the Tevatron into the Main Pang (MR). Previously, the reverse injection was performed in one supercycle. One batch of uncoalesced bunches was injected into the Tevatron and ejected after 40 seconds. Then the orbit closure was performed in the MR. In the new scheme the lambertson magnets have to be moved and separator polarities have to be switched, activities that cannot be completed in one supercycle. Therefore, the reverse injection sequence was changed. This involved the redefinition of TVBS dock event $D8 as MRBS $D8 thus marking it possible to inject 6 proton batches and eject them one at a time on command, performing orbit closure each time in the MR.
43 Particle Accelerators, Kicker Magnets, Beam Injection, Fermilab Tevatron, Wave Forms 430302, Orbits, Injection And Extraction Systems, Tuning, Beam-Beam Interactions
43 Particle Accelerators, Kicker Magnets, Beam Injection, Fermilab Tevatron, Wave Forms 430302, Orbits, Injection And Extraction Systems, Tuning, Beam-Beam Interactions
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