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Optimizing Aperture for Reduced Losses at CDF: Practical Recommendations

This analysis delves into strategies for minimizing losses by adjusting the aperture position at CDF experiment, addressing sigma separation problems and radial distances from the aperture. It explores the implications of moving away from the restriction and suggests potential corrective actions to enhance performance and avoid sizable losses at both CDF and D0. The study emphasizes the importance of continuously updating BPM reference files for precise orbit calculations and highlights the challenges of monitoring and maintaining optimal aperture configurations. Additionally, it raises questions regarding the possibility of modifying beam pipe conditions during the October 6 shutdown for further optimizations."

davidwright
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Optimizing Aperture for Reduced Losses at CDF: Practical Recommendations

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  1. CDF Aperture Dean Still 9-19-2008

  2. Summary of Aperture at CDF

  3. How we have moved in the squeeze New Path Lbseq 2-13 Old Path LBSEQ 15-24 Lbseq 14 No Corrector Maybe use C:VA48 LBSEQ 25

  4. Interesting Things The file 262 is on top of the aperture Results in big loss after smooth Moved outside Moved outside

  5. Losses at CDF and D0 LMB1SD This is related to lbseq 14 Sigma separation problem LMC4SD Where moved away from aperture

  6. Radial distance from Aperture After moving Before moving

  7. Summary • The restriction at CDF is real – moving away from it reduces losses. • We have to move Hor outside because no hor corrector to move inside. • We might be able to move down if use C:VA48? • We only a 2D plot of one location?? • BPM ref file 262 has been updated to take into account movement of orbit around restriction. • This takes much work to stay on top of! • Can the beam pipe be opened during the Oct 6 shutdown?

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