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2026-09-17 19:39:08 +09:00 · 2026-08-07 15:56:42 +09:00
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+% A script to analyze vertica and horizontal through focus scans to 
+% determine the size and position of the horizontal and vertical focii
+
+addpath ..
+close all
+clear
+%% vertical beam
+
+scans = [797:806];
+
+p.motor_name = 'py';
+p.title_str = 'Vertical beam';
+p.motor_units = '(microns)';
+p.counter = 'diode';
+p.pausetime = 0.5;
+p.coarse_motor = 'hz';
+
+out_ver = utils.focus_series_fit(scans,p);
+
+%% horizontal beam
+
+scans = [650:660];%[183:193];%[505:514];% scans 108 to, 89 to 
+
+p.motor_name = 'px';
+p.title_str = 'Horizontal beam';
+p.motor_units = '(microns)';
+p.counter = 'diode';
+p.pausetime = 0.5;
+p.coarse_motor = 'hz';
+
+out_hor = utils.focus_series_fit(scans,p);
+
+%% plot both
+figure(7)
+plot(out_ver.fitout,'b',out_ver.coarse_motor,out_ver.fwhm,'bo');
+hold on
+plot(out_hor.fitout,'r',out_hor.coarse_motor,out_hor.fwhm,'ro');
+title(sprintf('beam focus, vertex (hor,ver) (%.1f, %.1f)',out_hor.vertex,out_ver.vertex))
+xlabel(p.coarse_motor)
+ylabel(sprintf('FWHM %s',p.motor_units))
+legend('vertical','fit','horizontal','fit')
+hold off
+fprintf('The vertical vertex of the parabola is at %s = %f\n',p.coarse_motor,  out_ver.vertex);
+fprintf('The horizontal vertex of the parabola is at %s = %f\n',p.coarse_motor,out_hor.vertex);
+
+%% Example for sgalil continuous scan
+
+scans = [797:806];
+
+p.position_file = '~/Data10/sgalil/S%05d.dat';
+p.fast_axis_index = 1;  % = 1 or 2 for x and y scan respectively
+p.mcs_file = sprintf('~/Data10/mcs/S%02d000-%02d999/S%%05d/%s_%%05d.dat',floor(scans(1)/1000),floor(scans(1)/1000),beamline.identify_eaccount);
+p.mcs_channel = 3;
+p.title_str = 'Horizontal beam';
+p.motor_units = '(mm)';
+p.counter = 'diode';
+p.pausetime = 0.5;
+p.coarse_motor = 'samy';
+
+out_ver = utils.focus_series_fit(scans,p);
+
+%%
+
+%*-----------------------------------------------------------------------*
+%|                                                                       |
+%|  Except where otherwise noted, this work is licensed under a          |
+%|  Creative Commons Attribution-NonCommercial-ShareAlike 4.0            |
+%|  International (CC BY-NC-SA 4.0) license.                             |
+%|                                                                       |
+%|  Copyright (c) 2018 by Paul Scherrer Institute (http://www.psi.ch)    |
+%|                                                                       |
+%|       Author: CXS group, PSI                                          |
+%*-----------------------------------------------------------------------*
+% You may use this code with the following provisions:
+%
+% If the code is fully or partially redistributed, or rewritten in another
+%   computing language this notice should be included in the redistribution.
+%
+% If this code, or subfunctions or parts of it, is used for research in a 
+%   publication or if it is fully or partially rewritten for another 
+%   computing language the authors and institution should be acknowledged 
+%   in written form in the publication: “Data processing was carried out 
+%   using the “cSAXS matlab package” developed by the CXS group,
+%   Paul Scherrer Institut, Switzerland.” 
+%   Variations on the latter text can be incorporated upon discussion with 
+%   the CXS group if needed to more specifically reflect the use of the package 
+%   for the published work.
+%
+% A publication that focuses on describing features, or parameters, that
+%    are already existing in the code should be first discussed with the
+%    authors.
+%   
+% This code and subroutines are part of a continuous development, they 
+%    are provided “as they are” without guarantees or liability on part
+%    of PSI or the authors. It is the user responsibility to ensure its 
+%    proper use and the correctness of the results.