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collimation

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TUPSA003 Study of Efficiency of Beam Collimation at U-70 Accelerator by Use of Crystal Targets proton, kicker, target, extraction 38
 
  • I. A. Yazynin, A. G. Afonin, V. T. Baranov, S. A. Belov, V. N. Chepegin, Y. A. Chesnokov, P. N. Chirkov, A. D. Ermolaev, V. N. Gorlov, I. V. Ivanova, D. M. Krylov, V. A. Maisheev, D. A. Savin, E. A. Syshikov, V. Terekhov
    IHEP Protvino, Protvino, Moscow Region
  New crystal technique – bent crystal array and veer – type reflector based on straight crystals were used like first stage in collimation system at U-70 accelerator. Efficiency of collimation was enhanced up to 90% in two-stage collimation system which included first crystal stage and long steel absorber like second stage. While in previous one-stage system without crystal only 40% protons hit deeply in absorber. For data taking and analysis of information modified modern beam diagnostic system was applied.