An adaptive noise cancelling system used for beam control at the Stanford Linear Accelerator Center

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The SLAC Linear Collider now has a total of twenty-four beam-steering feedback loops used to keep the electron and positron beams on their desired trajectories. Seven of these loops measure and control the same beam as it proceeds down the linac through the arcs to the final focus. Ideally by each loop should correct only for disturbances that occur between it and the immediate upstream loop. In fact, in the original system each loop corrected for all upstream disturbances. This resulted in undesirable over-correction and ringing. We added MIMO (Multiple Input Multiple Output) adaptive noise cancellers to separate the signal ... continued below

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4 p.

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Himel, T.; Allison, S.; Grossberg, P.; Hendrickson, L.; Sass, R. & Shoaee, H. June 1, 1993.

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Description

The SLAC Linear Collider now has a total of twenty-four beam-steering feedback loops used to keep the electron and positron beams on their desired trajectories. Seven of these loops measure and control the same beam as it proceeds down the linac through the arcs to the final focus. Ideally by each loop should correct only for disturbances that occur between it and the immediate upstream loop. In fact, in the original system each loop corrected for all upstream disturbances. This resulted in undesirable over-correction and ringing. We added MIMO (Multiple Input Multiple Output) adaptive noise cancellers to separate the signal we wish to correct from disturbances further upstream. This adaptive control improved performance in the 1992 run.

Physical Description

4 p.

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OSTI; NTIS; INIS; GPO Dep.

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  • RT `93: 8th IEEE conference on real-time computer applications in nuclear, particle and plasma physics,Vancouver (Canada),8-11 Jun 1993

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  • Other: DE93041010
  • Report No.: SLAC-PUB--6246
  • Report No.: CONF-930640--7
  • Grant Number: AC03-76SF00515
  • Office of Scientific & Technical Information Report Number: 10187070
  • Archival Resource Key: ark:/67531/metadc1394129

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Office of Scientific & Technical Information Technical Reports

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  • June 1, 1993

Added to The UNT Digital Library

  • Jan. 12, 2019, 4:41 p.m.

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  • Jan. 23, 2019, 5:43 p.m.

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Himel, T.; Allison, S.; Grossberg, P.; Hendrickson, L.; Sass, R. & Shoaee, H. An adaptive noise cancelling system used for beam control at the Stanford Linear Accelerator Center, article, June 1, 1993; Menlo Park, California. (https://digital.library.unt.edu/ark:/67531/metadc1394129/: accessed March 26, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.