Method for the Prompt Destruction of the Electron Beam in a Synchrotron. I

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Abstract
By passing current through coils wrapped around a section of the vacuum chamber of a synchrotron it is possible to change the fall‐off index of a part of the guide field while leaving the remaining guide field unaltered. This technique is used on the Iowa State College 70‐Mev synchrotron, and complete beam destruction is found experimentally to occur in less than 0.08 microseconds. The build‐up of the radial oscillation is analyzed, and it is estimated that complete destruction of the beam is accomplished in approximately 10 revolutions or 0.06 μsec. The analysis also shows that this technique can be a valuable aid in the extraction of an electron beam from a synchrotron or betatron.

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