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Transmittance, scraping and maximum radii for MICE STEPVI

Transmittance, scraping and maximum radii for MICE STEPVI. M. Apollonio – University of Oxford. parameters used in simulation (ICOOL) TRANSMITTANCE Define a VACUUM channel (NO ABS, NO RF) and a large aperture upstream/downstream channels 40cm + vacuum channel + 40cm + 90cm

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Transmittance, scraping and maximum radii for MICE STEPVI

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  1. Transmittance, scraping and maximum radii for MICE STEPVI M. Apollonio – University of Oxford MICE analysis meeting - (21/09/2006)

  2. parameters used in simulation (ICOOL) TRANSMITTANCE Define a VACUUM channel (NO ABS, NO RF) and a large aperture upstream/downstream channels 40cm + vacuum channel + 40cm + 90cm Evaluate amplitude upstream/downstream and do the ratio=transmission/amplitude Max radius (effect of scraping) and cooling Use the realistic channel (real radii) Select throughoing muons Record the max radius for every z-slice Parameters used in ICOOL simulation Pz=240, 200, (170) MeV/c with no gaussian spread initial emittances: 0.1, 0.3, 0.6, 1.0, 2.0, 3.0 (cm rad) 40000 generated muons per initial emittance 128 positions along Z to study the amplitudes of the beam (Single Particle Emittance) MICE analysis meeting - (21/09/2006)

  3. Scheme for transmission study: No selection on muons Ratio between downstream and upstream particles R=40 cm R=40 cm R=90 cm Zu=-5.2 m Zd=-5.2 m T=Nd/Nu Nd Nu Scheme for max radius and cooling study: selection on muons  only throughgoing accepted Search for max value of radial distribution MICE analysis meeting - (21/09/2006)

  4. CAVEAT: • The RF is designed to work with a beam of ~200 MeV/c • When working with 240/170 MeV/c the RF config should be changed properly • I did it “by hand” changing the phase and the peak voltage • Discovered yesterday MICE analysis meeting - (21/09/2006)

  5. N.B.  RF @ 200 MeV/c: 8.74 MV/m – 90 deg 9.1 MV/m – ph.shift=30 deg P (GeV/c) Still not perfect … P (GeV/c) Pz=170 MeV/c emi=1 mm rad 8.74 MV/m – ph.shift=130 deg Z (m) Pz=240 MeV/c emi=1 mm rad 8.74 MV/m ph.shift=90 Z (m) MICE analysis meeting - (21/09/2006)

  6. beam maximum radius + cooling MICE analysis meeting - (21/09/2006)

  7. 0.1 cm rad 0.3 cm rad 0.6 cm rad 1.0 cm rad 2.0 cm rad 3.0 cm rad PZ=200 MeV/c, babs=42 cm MICE profile in ICOOL sim MICE analysis meeting - (21/09/2006)

  8. 40K m e=0.1cm rad PZ=200 MeV/c, babs=42 cm downstream e=0.3cm rad ratio heating cooling ratio MICE analysis meeting - (21/09/2006)

  9. e=0.6cm rad PZ=200 MeV/c, babs=42 cm e=1.0 cm rad MICE analysis meeting - (21/09/2006)

  10. e=2.0 cm rad PZ=200 MeV/c, babs=42 cm e=3.0 cm rad MICE analysis meeting - (21/09/2006)

  11. 0.1 cm rad 0.3 cm rad 0.6 cm rad 1.0 cm rad 2.0 cm rad 3.0 cm rad PZ=240 MeV/c, babs=42 cm MICE analysis meeting - (21/09/2006)

  12. 40K m e=0.1cm rad PZ=240 MeV/c, babs=42 cm downstream e=0.3cm rad MICE analysis meeting - (21/09/2006)

  13. e=0.6cm rad PZ=240 MeV/c, babs=42 cm e=1.0cm rad MICE analysis meeting - (21/09/2006)

  14. e=2.0cm rad PZ=240 MeV/c, babs=42 cm e=3.0cm rad MICE analysis meeting - (21/09/2006)

  15. 0.1 cm rad 0.3 cm rad 0.6 cm rad 1.0 cm rad 2.0 cm rad 3.0 cm rad PZ=170 MeV/c, babs=15 cm MICE analysis meeting - (21/09/2006)

  16. 40K m e=0.1cm rad PZ=170 MeV/c, babs=15 cm downstream e=0.3cm rad MICE analysis meeting - (21/09/2006)

  17. e=0.6cm rad PZ=170 MeV/c, babs=15 cm downstream e=1.0cm rad MICE analysis meeting - (21/09/2006)

  18. e=2.0 cm rad PZ=170 MeV/c, babs=15 cm downstream e=3.0 cm rad MICE analysis meeting - (21/09/2006)

  19. transmittance MICE analysis meeting - (21/09/2006)

  20. PZ=200 MeV/c, babs=42 cm e=0.1cm rad e=0.3cm rad MICE analysis meeting - (21/09/2006)

  21. e=0.6cm rad PZ=200 MeV/c, babs=42 cm e=1.0cm rad MICE analysis meeting - (21/09/2006)

  22. PZ=200 MeV/c, babs=42 cm e=2.0cm rad e=3.0cm rad MICE analysis meeting - (21/09/2006)

  23. !!!! 4K m !!!! PZ=170 MeV/c, babs=15 cm MICE analysis meeting - (21/09/2006)

  24. PZ=170 MeV/c, babs=15 cm MICE analysis meeting - (21/09/2006)

  25. PZ=170 MeV/c, babs=15 cm MICE analysis meeting - (21/09/2006)

  26. PZ=240 MeV/c, babs=42 cm MICE analysis meeting - (21/09/2006)

  27. PZ=240 MeV/c, babs=42 cm MICE analysis meeting - (21/09/2006)

  28. PZ=240 MeV/c, babs=42 cm MICE analysis meeting - (21/09/2006)

  29. MICE analysis meeting - (21/09/2006)

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