Difference between revisions of "Mott Run1 Target Thickness Study"

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==Sensitivity of A0 and Lambda to Systematic Time and Energy Cuts==
 
==Sensitivity of A0 and Lambda to Systematic Time and Energy Cuts==
Asymmetry versus thickness (with chi-squared values) plots for 1) FSEM measured thicknesses and uncertainties (same data as from July 14th presentation) 2)FSEM measured thicknesses and uncertainties adjusted to account for 5% variation within a given batch, as quoted be Lebow. 3)Lebow-quoted thicknesses (ie nominal thicknesses) with 10% uncertainty. 4) Table summarizing A_0s, lambdas and chi-squared values. To find χ<sup>2</sup>/ndf, divide the given chi-squared values by 7 (number of degrees of freedom is number of foils (9) minus number of fit parameters (2)).  
+
Asymmetry versus thickness (with chi-squared values) plots for 1) FSEM measured thicknesses and uncertainties (same data as from July 14th presentation) 2)FSEM measured thicknesses and uncertainties adjusted to account for 5% variation within a given batch, as quoted be Lebow. 3)Lebow-quoted thicknesses (ie nominal thicknesses) with 10% uncertainty. 4) Table summarizing A_0s, lambdas and chi-squared values. To find χ<sup>2</sup>/ndf, divide the given chi-squared values by 10 (number of degrees of freedom is number of foils (12) minus number of fit parameters (2)).  
  
 
1) [[Media:FSEM_uncertainty_only.odt]]
 
1) [[Media:FSEM_uncertainty_only.odt]]

Revision as of 11:03, 27 July 2015

CEBAF_MeV_Mott_Polarimeter

Mott Target Studies for Run 1

Sensitivity of A0 and Lambda to Systematic Time and Energy Cuts

Asymmetry versus thickness (with chi-squared values) plots for 1) FSEM measured thicknesses and uncertainties (same data as from July 14th presentation) 2)FSEM measured thicknesses and uncertainties adjusted to account for 5% variation within a given batch, as quoted be Lebow. 3)Lebow-quoted thicknesses (ie nominal thicknesses) with 10% uncertainty. 4) Table summarizing A_0s, lambdas and chi-squared values. To find χ2/ndf, divide the given chi-squared values by 10 (number of degrees of freedom is number of foils (12) minus number of fit parameters (2)).

1) Media:FSEM_uncertainty_only.odt

2) Media:FSEM_uncertainty_plus5.odt

3) Media:Lebow_quoted_thicknesses.odt

4) Media:systematics_table.odt

Summaries

Media:foil_Thickness_status-5June2015B.pptx

Media:foil_Thickness_status-20March2015.pptx

Media:foil thickness status_13Feb2015.pdf

Media:foil thickness status_13Feb2015.pptx

Media:first_thickness_meas.pptx

Working data

Media:Summary_all_foils_5June2015c.xlsx

Media:Elastic_rate_thickness_study_20March2015.xlsx

Media:Thickness_meas_summary_20March2015.xlsx

Media:Results_5613D_05_stat_analysis.xlsx

Media:Asy_vs_meas_thickness.xlsx

FE-SEM image data files

The output of the FE-SEM is a .tif file. The free software "ImageJ" has been used to measure the foil thickness from these images. The files with "meas" in the title have been output by the ImageJ software, and when they are opened again in that software, they show the lines/paths that were used to measure the thickness of the gold foils.

50 nm 6809B

media:Au_6809_B_50_cs_m03.tiff

media:Au_6809_B_50_cs_m04.tiff

media:Au_6809_B_50_cs_m06.tiff

media:Au_6809_B_50_cs_m03_meas.tiff

media:Au_6809_B_50_cs_m04_meas.tiff

media:Au_6809_B_50_cs_m06_meas.tiff

media:Au_6809_B_50_cs_m06_meas_even.tiff

media:Au_6809_B_50_cs_measurements.xlsx


225 nm 7029B

350 nm 5613A

media:Au_5613_D_350_cs_m01.tif

media:Au_5613_D_cs_m01_meas.tif

media:Au_5613_D_cs_m02.tif

media:Au_5613_D_cs_m03.tif

media:Au_5613_D_cs_m03_meas_even.tif

media:Au_5613_D_cs_m04.tif

media:Au_5613_D_cs_m05.tif

media:Au_5613_D_cs_m05_meas_even.tif

media:Au_5613_D_cs_m06.tif

media:Au_5613_D_cs_m06_meas_even.tif


500 nm 5275C

Center

media:Au_5275_C_500_cntr_m05.tif

media:Au_5275_C_500_cntr_m06.tif

media:Au_5275_C_500_cntr_m07.tif

media:Au_5275_C_500_cntr_m07_meas.tif

Edge

media:Au_5275_C_500_edge_m01.tif

media:Au_5275_C_500_edge_m01_meas.tif

media:Au_5275_C_500_edge_m02.tif

media:Au_5275_C_500_edge_m02_meas.tif

media:Au_5275_C_500_edge_m05.tif

media:Au_5275_C_500_edge_m05_meas.tif

media:Au_5275_C_500_edge_m06.tif

media:Au_5275_C_500_edge_m06_meas.tif

media:Au_5275_C_500_edge_m07.tif


625 nm 7028B

media:Au_7028_B_625_m01.tif

media:Au_7028_B_625_m01_meas.tif

media:Au_7028_B_625_m03.tif

media:Au_7028_B_625_m03_meas.tif

media:Au_7028_B_625_m04.tif

media:Au_7028_B_625_m04_meas.tif


750 nm 5134B

media:Au_5134_B_750_cs2_m04.tif

media:Au_5134_B_750_cs2_m04_meas.tif

media:Au_5134_B_750_cs2_m05.tif

media:Au_5134_B_750_cs2_m05_meas.tif

890 nm 3057C

1000 nm 5385B