Diffuser in G4MICE Victoria Blackmore 09/03/10 Analysis Meeting 1/8.

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Presentation transcript:

Diffuser in G4MICE Victoria Blackmore 09/03/10 Analysis Meeting 1/8

Summary Extra diffuser components were included in the G4MICE model. Comparisons were made with calculations in MICE Note 176  Some issues, now corrected. 2/8

Summary Figure 3 from MICE Note 176                       Inside tracker (z = mm) Put in a beam here Determine beam optics here 3/8

7.5mm Lead Disc Normalised transverse emittance (mm.rad) AlphaBeta (mm) Calculation6.0~ mm disc Diffuser (inc. 7.5mm disc) Normalised transverse emittance (mm.rad) AlphaBeta (mm) Calculation mm disc Diffuser (inc. 7.5mm disc) Upstream Parameters: Downstream Parameters: 4/8

15.5mm Lead Disc Normalised transverse emittance (mm.rad) AlphaBeta (mm) Calculation10.0~ mm disc Diffuser (inc. 15.5mm disc) Normalised transverse emittance (mm.rad) AlphaBeta (mm) Calculation mm disc Diffuser (inc. 15.5mm disc) Upstream Parameters: Downstream Parameters: 5/8

Beam Distributions (7.5mm) 6/8

Beam Distributions (15.5mm) 7/8

Finally... Calculations verified by G4MICE  Small difference between simulations using only the lead disc, and with the more realistic model. To do  Input a “real” beam from the TOF  Make a plot of the change in beam optics from the TOF and through the diffuser  Anything else? 8/8