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Beam Tracking with SAD through ATF Combined Optics: Analysis and Results

This document discusses beam tracking with the Slow Accumulator Device (SAD) through the Advanced Test Facility (ATF), focusing on the extraction line and proposed final focus configurations. Three tracking routines were performed, showing good agreement among results. The analysis covers the combined extraction line and final focus parameters, including beam quality metrics such as sigx, sigy, and energy spread. Critical remarks on potential issues and the necessity for further verification of combined optics are also included.

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Beam Tracking with SAD through ATF Combined Optics: Analysis and Results

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  1. Work in progress .. • Beam tracking with SAD through ATF combined optics: extraction line and proposed KEK final focus • Three tracking routines (good agreement) Mauro Pivi, Okugi-san, Andrei Seryi

  2. SAD: Combined extraction line and final focus BX BY b 1/2 (m) DX (m)

  3. Beam tracking with SAD Not yet combined: only final focus As expected

  4. Beam tracking with SAD All line combined: extraction + final focus DP (%) sigx (m) sigy (m) sigx/sigx0 sigy/sigy 0.0 3.8504E-06 34.615E-09 1.00 1.00 0.1 4.8265E-06 41.496E-09 1.25 1.19 0.15 1.7741E-05 63.499E-09 4.6 1.8 0.2 9.1840E-05 1.0823E-07 24.1 3.17 Is real effect ? Need to re-check combined optics ?!

  5. Bandwidth at “IP”: BX and BY vs energy spread DP SAD MAD

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