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Polarized Proton Beam Acceleration at Nuclotron with the use of the Solenoid Siberian Snake

Joint Institute for Nuclear Research International Workshop NICA-SPIN 2013. March 18 – 19 , 201 3, Dubna , Russia. Polarized Proton Beam Acceleration at Nuclotron with the use of the Solenoid Siberian Snake

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Polarized Proton Beam Acceleration at Nuclotron with the use of the Solenoid Siberian Snake

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  1. Joint Institutefor Nuclear ResearchInternational Workshop NICA-SPIN 2013 March18 –19, 2013, Dubna, Russia Polarized Proton Beam Acceleration at Nuclotron with the use of the Solenoid Siberian Snake Yu.N. Filatov1,3,A.D. Kovalenko1, A.V. Butenko1, A.M. Kondratenko2, M.A. Kondratenko2 and V.A. Mikhaylov1 1Join Institute for Nuclear Research, Dubna, Russia 2 Science and Technique Laboratory Zaryad, Novosibirsk, Russia 3Moscow Institute of Physics and Technology, Dolgoprydny, Russia

  2. Polarized proton and deuteron in Nuclotron Yu. Filatov et al., Polarized Proton Beam Acceleration at Nuclotron with the use of the Solenoid Siberian Snake,NICA-SPIN 2013, March 18- 19, 2013, Dubna B. Issinskii et al., “Deuteron Resonance Depolarization Degree in JINRNuclotron,” in Proc. of VI Workshopon HESP, Protvino, 1996 N. I. Golubeva et al., “Study of Depolarization ofDeuteron and ProtonBeams in Nuclotron Ring,” PreprintJINR R9-22-289 (Dubna, 2002) S.Vokal et al.“Program of PolarizationStudies and Capabilities of Accelerating Polarized Proton and Light Nuclear Beams at the Nuclotron of the Joint Institute for Nuclear Research”,Physics of Particles and Nuclei Letters, 2009, Vol. 6, No. 1, pp. 48–58. I.Meshkov and Yu.Filatov , “ Polarized hadrons beams in NICA project”,19th International Spin Physics Symposium, 2010Jülich, Germany A.Kovalenko et al. The NICA Facility in polarized proton operation mode, IPAC’11

  3. Spin resonances at Nuclotron An option: acceleration up to 6 GeV and extraction into NICA collider for further acceleration up to 12 GeV max. Dangerous resonances are marked with red caps dB/dt = 1 T/s 4 4 1 1 1 5 2 Yu. Filatov et al., Polarized Proton Beam Acceleration at Nuclotron with the use of the Solenoid Siberian Snake,NICA-SPIN 2013, March 18- 19, 2013, Dubna lg(w/wD) 1.Intrinsic res. spin = kp  Qy 2.Integer res. spin = k lg(w/wD) Ep ,GeV Ep ,GeV wD = 7.310-4 wD = 7.310-4 4. Coupling res. spin = m  Qx , m  kp 3. Nonsuperperiodic res. spin = m  Qy , m  kp lg(w/wD) lg(w/wD) Ep ,GeV Ep ,GeV 16 wD = 7.310-4 wD = 7.310-4

  4. Solenoid Siberian Snake in Nuclotron Yu. Filatov et al., Polarized Proton Beam Acceleration at Nuclotron with the use of the Solenoid Siberian Snake,NICA-SPIN 2013, March 18- 19, 2013, Dubna Partial Siberian Snake Full Siberian Snake Total longitudinal field integral:(B||L)max=10,5Tm (y 6.8) Total longitudinal field integral:(B||L)max= 21Tm Emax=6GeV is angle between polarization and vertical axis

  5. Yu. Filatov et al., Polarized Proton Beam Acceleration at Nuclotron with the use of the Solenoid Siberian Snake,NICA-SPIN 2013, March 18- 19, 2013, Dubna The scheme of the solenoid coupling compensation Installation Siberian Snake into two free spaces are angles between quadrupole normal and radial accelerator axis is quadrupole gradient D is the structural defocusing quadrupole

  6. Yu. Filatov et al., Polarized Proton Beam Acceleration at Nuclotron with the use of the Solenoid Siberian Snake,NICA-SPIN 2013, March 18- 19, 2013, Dubna Spin Matching of the Proton Polarization The angle between polarization and velocity at injection energy is equal to Injection into Nuclotron The angle between polarization and velocity when transferring the beam from Nuclotron into NICA Collider The angle between polarization and velocity when transferring the beam from Nuclotron into the Main Experimental Hall In the case of Partial Siberian Snake the additional angle appears between polarization and vertical axis which equal to Extraction into the Main Experimental Hall Extraction into NICA Collider

  7. Yu. Filatov et al., Polarized Proton Beam Acceleration at Nuclotron with the use of the Solenoid Siberian Snake,NICA-SPIN 2013, March 18- 19, 2013, Dubna Summary & Outlook • Предложена схема ускорения пучка поляризованных протонов с помощью соленоидальной сибирской змейки. Требуемый интеграл продольного поля при ускорении до 5 ГэВ в режиме полной змейки составляет 22 Тм. Этот интеграл поля позволяет сохранить поляризацию до максимальной энергии протонов в режиме частичной сибирской змейки. • Предложена специальная компактная схема компенсации связи вертикальных и радиальных бетатронных колебаний, которая позволяет разместить соленоидальную сибирскую змейку в Нуклотроне. • Предложенная схема соленоидальной сибирской змейки позволяет использовать Нуклотрон в качестве инжектора пучка поляризованных протонов в коллайдер НИКА и в экспериментальный зал. • Аналогичную схему соленоидальной сибирской змейки можно использовать для сохранения поляризации протонов в бустере.

  8. Thank you for your attention!

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