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High-efficiency beam extraction and collimation using channeling in very short bent crystals
A G Afonin1, V T Baranov, V M Biryukov
1Institute for High Energy Physics, Protvino, 142281, Russia.
Physical Review Letters
|September 5, 2001
Summary
High-efficiency proton extraction was achieved using a silicon crystal at the U-70 accelerator. This method demonstrates a promising technique for particle beam channeling and collimation in accelerators.
Area of Science:
- Particle Physics
- Accelerator Physics
- Materials Science
Background:
- Particle accelerators require efficient methods for beam extraction and control.
- Crystal channeling offers a potential solution for precise manipulation of charged particle beams.
Purpose of the Study:
- To demonstrate the effectiveness of silicon crystal channeling for proton extraction from the U-70 accelerator.
- To validate experimental results with Monte Carlo simulations.
- To assess the potential for crystal-assisted techniques in other particle accelerators.
Main Methods:
- Utilized a silicon crystal (approximately 2 mm length) for channeling 70 GeV protons.
- Directed a proton beam (approximately 10^12 protons) towards the crystal.
- Measured extraction efficiency during 2-second spills.
- Employed Monte Carlo simulations for comparison with experimental data.
Main Results:
- Achieved a proton extraction efficiency of 85.3+/-2.8% using the silicon crystal.
- Experimental data closely matched predictions from Monte Carlo simulations.
- Successfully demonstrated crystal channeling for slow beam extraction.
Conclusions:
- Silicon crystal channeling is a highly efficient method for extracting protons from accelerators.
- The technique shows significant promise for improving accelerator performance and enabling new applications.
- This method provides crucial support for implementing crystal-assisted extraction and collimation in various accelerators worldwide.