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AWAKE Beam Line Window: Beam Emittance Blow up Studies

AWAKE Beam Line Window: Beam Emittance Blow up Studies. AWAKE Physics Board Meeting 02.07.2014 A. Manousos , V. Vlachoudis. AWAKE Window Introduction. Window: Possible locations. @ QTSD-QTLD Beam Parameters: Protons at 400GeV/c Dp /p = 0.1% N p = 3.5 10 11 p + per bunch 1 bunch

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AWAKE Beam Line Window: Beam Emittance Blow up Studies

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  1. AWAKE Beam Line Window:Beam Emittance Blow up Studies AWAKE Physics Board Meeting 02.07.2014A. Manousos, V. Vlachoudis

  2. AWAKE WindowIntroduction • Window: • Possible locations.@ QTSD-QTLD • Beam Parameters: • Protons at 400GeV/c • Dp/p = 0.1% • Np = 3.5 1011 p+ per bunch • 1 bunch • Gaussian beam • Optics Parameters provided by Chiara • Normalized Emittances: 3.5mm mrad with dispersion • Geometry: • Geometry :Graphite Cylinder (1.55g/cm3,R=3.5cm, L=0.3cm) With Dispersion AWAKE Physics Board Meeting

  3. AWAKE WindowMirror Position 9.2e+005 protons hit the Mirror 2.9e+008 protons hit the Mirror 300 times larger AWAKE Physics Board Meeting

  4. AWAKE WindowMirror Position AWAKE Physics Board Meeting

  5. AWAKE WindowMirror Position AWAKE Physics Board Meeting

  6. AWAKE WindowMirror Position AWAKE Physics Board Meeting

  7. AWAKE WindowMirror Position Photons Electrons Δ(Nparticles/bunch)Ε/ΔΕ Δ(Nparticles/bunch)Ε/ΔΕ From Pions0 GeV/c GeV/c Pions+- Δ(Nparticles/bunch)Ε/ΔΕ GeV/c AWAKE Physics Board Meeting

  8. Conclusions • Majority of secondary protons still have large energies ~100 GeV -> is this a problem for the mirror? • ~100 GeV protons should create a lot of additional secondary particles in that mirror • New Simulations are needed, where the mirror should be included. • Bigger the spot size → Higher the blow-up • Particle maps are available for further tracking studies • Procedure for the evaluation of the Em. Blow up is still under revision • What is really important for what’s downstream?Are the tails important for the plasma cell?Can they perturb the plasma? AWAKE Physics Board Meeting

  9. The End..!! Thank You !!! AWAKE Physics Board Meeting

  10. Backup Slides AWAKE Physics Board Meeting

  11. AWAKE WindowBefore Plasma AWAKE Physics Board Meeting

  12. AWAKE WindowBefore Plasma AWAKE Physics Board Meeting

  13. AWAKE WindowBefore Plasma AWAKE Physics Board Meeting

  14. AWAKE WindowBefore Plasma AWAKE Physics Board Meeting

  15. AWAKE WindowBefore Plasma Photons Electrons Δ(Nparticles/bunch)Ε / ΔΕ Δ(Nparticles/bunch)Ε / ΔΕ From Pions0 GeV/c GeV/c Pions+- Δ(Nparticles/bunch)Ε /ΔΕ GeV/c AWAKE Physics Board Meeting

  16. AWAKE WindowAfter Plasma AWAKE Physics Board Meeting

  17. AWAKE WindowAfter Plasma AWAKE Physics Board Meeting

  18. AWAKE WindowAfter Plasma AWAKE Physics Board Meeting

  19. AWAKE WindowAfter Plasma AWAKE Physics Board Meeting

  20. AWAKE WindowAfter Plasma Photons Electrons Δ(Nparticles/bunch)Ε / ΔΕ Δ(Nparticles/bunch)Ε / ΔΕ GeV/c GeV/c Pions+- Δ(Nparticles/bunch)Ε / ΔΕ GeV/c AWAKE Physics Board Meeting

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