THCB01 |
E-Lens Test Stand Instrumentation Progress | |
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Funding: Work supported by B.S.A, LLC under contract No. DE-AC02-98CH10886 with the U.S. Department of Energy. In preparation for installation of an Electron Lens (E-Lens) into RHIC, planned for the Fall of 2012, a working test bench is in use testing performance of the gun, collector, instrumentation and controls. This paper will present the progress and pitfalls encountered while testing & operating the instrumentation on this test bench. Results are presented from issues including ground loop signals generated by the DCCTs, static magnetic field interference, competing YAG screen illumination techniques, YAG crystal damage during beam operation, pinhole scan data correction for skew angle and scaling, rendering of pinhole data into an image file, performance of the four quadrant beam scraper electrodes, and challenges in measuring beam current in the power circuit. Working knowledge and insight into each of these systems has been gained by both success and difficulties leading to success. These insights will be presented with supporting data and images. |
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THCB02 |
Twisting Wire-Scanner | |
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| A new type of 'two-in-one' wire scanner is proposed. Recent advances in the linear motors' technology make it possible to combine translational and rotational movements. This will allow to scan the beam in two perpendicular directions using a single driving motor and a special fork attached to it. Vertical or horizontal mounting will help to escape problems associated with the 45 deg scanners. | ||