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Demonstration of Reverse Emittance Exchange in MICE » History » Revision 11

Revision 10 (Mohayai, Tanaz Angelina, 13 August 2018 01:06) → Revision 11/14 (Mohayai, Tanaz Angelina, 14 August 2018 19:27)

h1. Demonstration of Reverse Emittance Exchange in MICE (Preliminary) 

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 h2. Abstract 

 bq.  
 Published in: Forthcoming 
 arXiv: Forthcoming 
 RAL Preprint: Forthcoming 
 DOI: Forthcoming 

 BibTeX 
 References 
 Source 

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 *Presented at "NuFact18":https://indico.phys.vt.edu/event/34/timetable/?view=standard:* 
 * Yagmur Torun's presentation: 
 ** Presentation: attachment:forthcoming  
 * Paul Soler's presentation: 
 ** Presentation: attachment:forthcoming  

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 h2. x vs pz (Data) 

 !hist2d_data_us_x_pz_2.png! attachment:hist2d_data_us_x_pz_2.png  

 !x_p_us_hist_data_1.png! attachment:x_p_us_hist_data_1.png  

 _The distribution of pz vs x upstream of the absorber_ 

 !hist2d_data_ds_x_pz_2.png! attachment:hist2d_data_ds_x_pz_2.png  

 !x_p_ds_hist_data_1.png! attachment:x_p_ds_hist_data_1.png 

 _The distribution of pz vs x downstream of the absorber. The downstream muon sample has a more spread-out longitudinal momentum as a result of reverse emittance exchange._ 

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 h2. x vs pz and density versus average beam radius (MC recon) 

 !hist2d_mc_us_x_pz_2.png! attachment:hist2d_mc_us_x_pz_2.png  

 !x_p_us_hist_mc_recon_1.png! attachment:x_p_us_hist_mc_recon_1.png 

 _The distribution of pz vs x upstream of the absorber_ 

 !hist2d_mc_ds_x_pz_2.png! attachment:hist2d_mc_ds_x_pz_2.png  

 !x_p_ds_hist_mc_recon_1.png! attachment:x_p_ds_hist_mc_recon_1.png 

 _The distribution of pz vs x downstream of the absorber. The downstream muon sample has a more spread-out longitudinal momentum as a result of reverse emittance exchange._ 

 !density_vs_volume_mc_recon_long_1.png! attachment:density_vs_volume_mc_recon_long_1.png 

 !density_vs_volume_mc_recon_long_2.png! attachment:density_vs_volume_mc_recon_long_2.png 

 !density_vs_volume_mc_recon_long_3.png! attachment:density_vs_volume_mc_recon_long_3.png 

 _The distribution of density of each phase-space contour, as measured with the kernel density estimation technique vs the contour volume, as measured with the kernel density estimation and the Monte Carlo volume calculation techniques. The coordinate in distribution is the distribution of the longitudinal direction is coordinate energy (E- Emean, energy (energy with respect to mean energy) of each muon (momentum coordinates used in computing the energy are px/pmean, py/pmean, pz/pmean). muon. Longitudinal heating (the expected effect from reverse emittance exchange) is demonstrated as the decrease in density at low average beam radius values._ 

 !density_vs_volume_mc_recon_trans_1.png! attachment:density_vs_volume_mc_recon_trans_1.png 

 !density_vs_volume_mc_recon_trans_2.png! attachment:density_vs_volume_mc_recon_trans_2.png 

 !density_vs_volume_mc_recon_trans_3.png! attachment:density_vs_volume_mc_recon_trans_3.png 

 _The distribution of density of each phase-space contour, as measured with the kernel density estimation technique vs the fourth-root of contour volume (average beam radius in the four-dimensional transverse direction), as measured with the kernel density estimation and the Monte Carlo volume calculation techniques. The coordinates distributions are the distributions of the transverse coordinates x, px/pmean, px, y, py/pmean py of each muon. Transverse cooling (the expected effect from reverse emittance exchange) is demonstrated as the increase in density at low average beam radius values._ 

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 !us_e.png! attachment:us_e.png 
 !ds_e.png! attachment:ds_e.png 

 _The energy (E - Emean) distributions upstream (top) and downstream (bottom) of the wegde. The energy coordinate is the same as the one used in generating the longitudinal density-vs-volume plots above_ 
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