The Leningrad Experiment on Volume Capture

Samsonov, V.

doi:10.1007/978-1-4757-6394-2_11

Cited by 7 publications

(3 citation statements)

References 10 publications

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“…Doyle and Turner [5] proposed using the form factor of the crystal atoms to obtain any continuous potential with accuracy which is very close to the "real" potential. In the work [6] using the same approach the potential for proton channelling in Si crystal was obtained and used in experiments. Unfortunately, there is a problem all calculation should be done by numerical methods.…”

Section: Averaged Channeling Potentialsmentioning

confidence: 99%

The relative error of calculations at the Pöschl-Teller model potential for the planar channeled muon

Korotchenko

Kunashenko

2018

J. Inst.

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In the framework of quantum mechanics, we investigate muon channeling in the Si (200) crystal. The transverse energy levels and wave functions are obtained for the Pöschl-Teller and the Doyle-Turner potentials. Comparative analysis demonstrates that analytical results of calculations obtained on the base of the Pöschl-Teller potential are in a good agreement with the numerical results of calculations in the Doyle-Turner model for the low energy levels. These results for the muon with rest mass m µ and relativistic factor γ are valid for any particle with elementary charge and rest mass m and relativistic factor γ m = γ(m µ /m). Therefore, our results can be useful for the preparation and performing the experimental investigation of the various phenomena accompanying particle channeling.

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Section: Averaged Channeling Potentialsmentioning

confidence: 99%

The relative error of calculations at the Pöschl-Teller model potential for the planar channeled muon

Korotchenko

Kunashenko

2018

J. Inst.

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“…The surface equation for the crystal plate in the ideal case of the method of moments discussed in Ref. 9 is…”

Section: Crystal Bending Systemmentioning

confidence: 99%

Crystal deflector for highly efficient channeling extraction of a proton beam from accelerators

Biryukov

Chesnokov

Guidi

et al. 2002

Review of Scientific Instruments

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The design and manufacturing details of a new crystal deflector for proton beams are reported. The technique allows one to manufacture a very short deflector along the beam direction ͑2 mm͒. Thanks to that, multiple encounters of circulating particles with the crystal are possible with a reduced probability of multiple scattering and nuclear interactions per encounter. Thus, drastic increase in efficiency for particle extraction out of the accelerator was attained ͑85%͒ on a 70 GeV proton beam. We show the characteristics of the crystal deflector and the technology behind it.

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“…In that case, a crystal plate obtains the shape of a saddle, barrel, or a pure cylinder depending on the concrete anisotropic properties of the material. The surface equation for the crystal plate in the ideal case of the method of moments discussed in [9] is:…”

Section: Crystal Bending Systemmentioning

confidence: 99%

Highly efficient crystal deflector for channeling extraction of a proton beam from accelerators

Guidi

Malagù

Martinelli

et al.

Proceedings of the 2003 Bipolar/BiCMOS Circuits and Technology Meeting (IEEE Cat. No.03CH37440)

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The design and performance of a novel crystal deflector for proton beams are reported. A silicon crystal was used to channel and extract 70 GeV protons from the U-70 accelerator in Protvino with an efficiency of (85.3±2.8)%, as measured for a beam of ~10 12 protons directed towards crystals of ~2 mm length in spills of ~2 s duration. Experimental data agree with the theoretically predicted Monte Carlo results for channeling. The technique allows one to manufacture a very short deflector along the beam direction (2 mm). Consequently, multiple encounters of circulating particles with the crystal are possible with little probability of multiple scattering and nuclear interactions per encounter. Thus, drastic increase in efficiency for particle extraction out of the accelerator was attained. We show the characteristics of the crystaldeflector and the technology behind it. Such an achievement is important in devising a more efficient use of the U-70 accelerator and provides crucial support for implementing crystal-assisted slow extraction and collimation in other machines, such as the Tevatron, RHIC, the AGS, the SNS, COSY, and the LHC.

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The Leningrad Experiment on Volume Capture

Cited by 7 publications

References 10 publications

The relative error of calculations at the Pöschl-Teller model potential for the planar channeled muon

The relative error of calculations at the Pöschl-Teller model potential for the planar channeled muon

Crystal deflector for highly efficient channeling extraction of a proton beam from accelerators

Highly efficient crystal deflector for channeling extraction of a proton beam from accelerators

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