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fennecs/magnet/Cryogenic/B_Profiles_Cryogenic_170.m
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B_Profiles_Cryogenic_170.m
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function B_Profiles_Cryogenic_170(magnet,I)
%
% Call: B_Profiles_170(magnet,I)
% Example: >> I = [9.7000 7.7000 96.2499 91.0124 87.4723]
% >> B_Profiles_170('asg_modified_201206',I);
%
% >> I = [61.56 66.45 113.43 108.09]/3;
% >> B_Profiles_170('cryogenic',I);
%
%
% Returns magnetic field and beam parameters associated to the GT170 GHz magnet
%
% Version : 1.0 J.-P. Hogge Feb. 10, 2005
%
% magnet : 'fzk_165ghz_oi'
% I : Array of currents, as read on PS
% Dimensions are in [m]
% z_shim = 0.000;
% z_cat_design = 0.08;
% z_cav_design = 0.434;
% z_cat = z_cat_design ;
% z_cav = z_cav_design ;
% r_cat = 0.05;
% z_shim = 0.000;
% z_cat_design = 9999;
% z_cav_design = 0.394;
% z_cat = z_cat_design ;
% z_cav = z_cav_design ;
% r_cat = 0.05;
% Cryogenic magnet for the EU 170GHz 1MW prototype
z_shim = 0.000;
z_cat_design = 0.136;
z_cav_design = 0.499665;
z_cat = z_cat_design ;
z_cav = z_cav_design ;
r_cat = 0.05318;
% z = linspace(0.00,0.900,91)-0.00012; % =.00012 is the difference between reading and actual
% position of the probe (due to the black ring curvature)
% JPH: 2012_01_12
z = linspace(0.00,0.900,901)-0.000; %
% z_interest = [z_cat, z_cav, 0.228,0.296,0.358,0.512,0.572]; % A few points with particular interest
z_interest = [];
z = cat(2,z,z_interest); % Add those locations to the linspace
z = sort(z); % And finally sort
r = 0 * z;
% 'bz','br','dbzbz','dbzdr','dbrdz','dbrdr', 'd2bzdz2' or 'aphi'
Bz = B_Ellip_Cryogenic_170('bz', magnet,I,r,z);
dBzdz = B_Ellip_Cryogenic_170('dbzdz', magnet,I,r,z);
d2Bzdz = B_Ellip_Cryogenic_170('d2bzdz2',magnet,I,r,z);
%
r = r+0.025;
Bz_25 = B_Ellip_Cryogenic_170('bz', magnet,I,r,z);
Br_25 = B_Ellip_Cryogenic_170('br', magnet,I,r,z);
dBzdz_25 = B_Ellip_Cryogenic_170('dbzdz', magnet,I,r,z);
dBzdr_25 = B_Ellip_Cryogenic_170('dbzdr', magnet,I,r,z);
% Br = B_Ellip_140('br',magnet,Igun,Icav,r,z)
% dBzdz = B_Ellip_140('dbzdz',magnet,Igun,Icav,r,z)
% dBzdr = B_Ellip_140('dbzdr',magnet,Igun,Icav,r,z)
% dBrdz = B_Ellip_140('dbrdz',magnet,Igun,Icav,r,z)
% dBrdr = B_Ellip_140('dbrdz',magnet,Igun,Icav,r,z)
% d2Bzdz = B_Ellip_140('d2bzdz2',magnet,Igun,Icav,r,z)
% aphi = B_Ellip_140('aphi',magnet,Igun,Icav,r,z)
% r_beam = r_beam_140(magnet,Igun,Icav);
disp(' ')
% disp(sprintf('Cathode magnetic field on axis (r=0) : %1.5f [T]',Bz(1)))
% disp(sprintf('Cathode magnetic field at r=r_cat : %1.5f [T]',Bz(2)))
% disp(sprintf('Cavity magnetic field : %1.5f [T]',Bz(3)))
% disp(sprintf('Magnetic field compression (r=0) : %2.5f',Bz(3)/Bz(1)))
% disp(sprintf('Magnetic field compression (r=rcat) : %2.5f',Bz(3)/Bz(2)))
% disp(sprintf('Beam radius in cavity : %2.5f [mm]' ,r_beam*1000))
% disp(sprintf('Beam Compression (r_cat/r_beam)^2 : %1.5f' ,(r_cat/r_beam)^2))
disp(' ')
disp(' ')
disp(sprintf('GT170 GHz magnetic field and derivatives for I1,..,I5=%0.5g %0.5g %0.5g %0.5g [A]',I(1),I(2),I(3),I(4)))
disp('-------------------------------------------------------------------------------')
disp(' ')
disp(sprintf('Cathode is located in z_cat=%0.5g [m]',z_cat))
disp(sprintf('Cavity is located in z_cav=%0.5g [m]',z_cav))
disp(' ')
disp('z [m] Bz [T] dBz/dz [T/m] d2Bz/dz2 [T/m2] Bz(r=25mm) Br(r=25mm) dBz/dz(r=25mm) dBz/dr(r=25mm) ')
disp('----- ------ ------------ --------------- ---------- ---------- -------------- -------------- ')
for i=1:length(z)
disp(sprintf('%8.5f %8.5f %9.5f %10.5f %8.5f %8.5f %9.5f %9.5f ',...
z(i), Bz(i), dBzdz(i), d2Bzdz(i), Bz_25(i), Br_25(i), dBzdz_25(i), dBzdr_25(i) ))
end
disp(' ')
%
%--------------------------------------------------------------------------------------------------
%
%
figure(1)
subplot(3,1,1)
plot(z,Bz);
title(sprintf('GT170: Magnetic field with I1,..,I4=%0.5g %0.5g %0.5g %0.5g [A]\n',I(1),I(2),I(3),I(4)))
xlabel('Position z [m]')
ylabel('B_z[T]')
grid on
subplot(3,1,2)
plot(z,dBzdz);
title(sprintf('GT170: Magnetic field derivative with I1,..,I4=%0.5g %0.5g %0.5g %0.5g [A]\n',I(1),I(2),I(3),I(4)))
xlabel('Position z [m]')
ylabel('dB_z/dz[T/m]')
grid on
subplot(3,1,3)
plot(z,d2Bzdz);
title(sprintf('GT170 Magnetic field second derivative with I1,..,I4=%0.5g %0.5g %0.5g %0.5g [A]\n',I(1),I(2),I(3),I(4)))
xlabel('Position z [m]')
ylabel('d2B_z/dz2[T/m2]')
grid on
%
%--------------------------------------------------------------------------------------------------
%
filename = sprintf('b170profile_%s.txt',magnet)
fid = fopen(filename,'w')
fprintf(fid,'GT170 GHz magnetic field and derivatives for I1,..,I5=%0.5g %0.5g %0.5g %0.5g [A]\n',I(1),I(2),I(3),I(4));
fprintf(fid,'------------------------------------------------------------- \n');
fprintf(' \n');
fprintf(fid,'Cathode is located in z_cat=%0.5g [m] \n',z_cat);
fprintf(fid,'Cavity is located in z_cav=%0.5g [m] \n',z_cav);
fprintf(' \n');
fprintf(fid,' z [m] Bz [T] dBz/dz [T/m] d2Bz/dz2 [T/m2] Bz(r=25mm) Br(r=25mm) dBz/dz(r=25mm) dBz/dr(r=25mm) \n');
fprintf(fid,' ----- ------ ------------ --------------- ---------- ---------- -------------- -------------- \n');
for i=1:length(z)
fprintf(fid,'%8.5f %8.5f %9.5f %10.5f %8.5f %8.5f %9.5f %9.5f \n',...
z(i), Bz(i), dBzdz(i), d2Bzdz(i), Bz_25(i), Br_25(i), dBzdz_25(i), dBzdr_25(i) );
end
fclose(fid)
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