Optimization of crystal extraction experiment
Valery Biryukov
TL;DR
This paper uses computer simulations to optimize bent-crystal parameters for particle extraction in accelerators, revealing higher curvature values than previous applications and discussing the influence of accelerator optics and high-Z crystals.
Contribution
It introduces a new optimized crystal curvature near 1 GeV/cm for extraction, differing from previous beam line applications, and analyzes effects of accelerator optics and high-Z crystals.
Findings
Optimal crystal curvature is near 1 GeV/cm.
High-Z crystals could be viable for extraction.
Simulations align with ongoing CERN-SPS and Fermilab experiments.
Abstract
Using a computer model for the crystal extraction, we investigate the bent-crystal parameters optimal for the extraction experiment. The optimal crystal curvature is found to be near 1 GeV/cm (for pv/R), i.e. a factor of 2--3 higher than for the crystal application in beam lines. An influence of the accelerator optics on extraction is discussed. A possibility of using the high-Z crystals for extraction is considered. The simulations for the ongoing experiments at the CERN-SPS and the Fermilab Tevatron, and for the proposed extraction at LHC, are presented.
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