Homec4science
Diffusion FENNECS: Finite Element Non-Neutral Electron Cloud Simulator (stable) Browse

fennecs/geometries/gt115/Draw_geom_115.m
2eb9a934d936stable

Last Change
Raw File

Draw_geom_115.m
View Options

% Display the geometry of the gt170 gyrotron gun for the first prototype.
% The magnetic field is the one of the asg magnet
% This also creates the h5 files of the geometry and of the magnetic field
% to be used in FENNECS
%% Define and calculate the magnetic field
% z=linspace(-0.05,0.2,100);
% r=linspace(0.02,0.09,100);
% [Z,R] = meshgrid(z,r);
%
% % I = [ 9.7 7.7 96.2499 91.0124 87.4723];
% % I = [0 0 6.79541 1.967 88.2799];
% % I = [0 0 5 1.967 88.2799];
% % Current in coils
% I = 0.6*[61.56 66.45 113.43 108.09 ];
% res=zeros([size(Z),3]);
%
%
% for i=1:size(R,1)
% res(i,:,:) = B_Ellip_Cryogenic_170({'aphi','bz','br'},'cryogenic',I,R(i,:),Z(i,:));
% end
% Aphi=res(:,:,1);
% Bz=res(:,:,2);
% Br=res(:,:,3);
%% Define the individual boundaries
%read from input file
geom=importgt115('gt115.data');
geomcells={};
j=1;
i=1;
n=1;
points=zeros(2,1);
% clean and separate the curves
while i<=size(geom.Z,1)
if isnan(geom.Z(i))
j=j+1;
while isnan(geom.Z(i))
i=i+1;
end
n=1;
end
points(:,geom.cp(i))=[geom.Z(i) geom.R(i)];
geomcells{j}.Z(n)=geom.Z(i);
geomcells{j}.R(n)=geom.R(i);
i=i+1;
n=n+1;
end
% create the geometry structure
geomcells{1}.name='Cathode';
geomcells{1}.Dval=-30000;
geomcells{2}.name='Body';
geomcells{2}.Dval=0;
geomcells{3}.name='Coaxial insert';
geomcells{3}.Dval=0;
% geomcells{4}.name='insulator left';
% geomcells{4}.Dval=0;
% geomcells{5}.name='insulator right';
% geomcells{5}.Dval=0;
for k=1:length(geomcells)
geomcells{k}.order=2;
geomcells{k}.dim=2;
geomcells{k}.epsce=1e-9;
geomcells{k}.epsge=1e-9;
geomcells{k}.type=0;
geomcells{k}.periodic=0;
end
% geomcells{end-1}.type=2;
% geomcells{end}.type=2;
%% Plots
f=figure;
for k=1:length(geomcells)
plothandle=plot(geomcells{k}.Z, geomcells{k}.R,'k-','linewidth',1.5);
hold on
geomcells{k}.points=[geomcells{k}.Z; geomcells{k}.R];
order=geomcells{k}.order;
knots=linspace(0,1,length(geomcells{k}.Z)-(order-2));
knots=augknt(knots, order);
sizec=size(geomcells{k}.Z);
order=length(knots)-sizec(end);
coeffs=[geomcells{k}.Z; geomcells{k}.R];
pp=spmak(knots,coeffs);
s=linspace(0,1,10000);
fittedpos=fnval(pp,s);
%plot(fittedpos(1,:),fittedpos(2,:),'x-')
end
hold on
%end
%axis equal
%Plot the magnetic field lines
%[~,cont1]=contour(Z,R,R.*Aphi,15,'r:','linewidth',3);
legend([plothandle],{'Gun geometry','Wall approximation'},'location','southwest')
f.PaperUnits='centimeters';
f.PaperSize=[12,8];
xlabel('z [m]')
ylabel('r [m]')
print(f,'phiBprofile_protoasg','-dpdf','-fillpage')
savefig(f,'phiBprofile_protoasg')
hold off
%% Save magnetic field and geometry to disk
save=true;
overwrite=true;
if save
% idr=1:1:length(magnet.r);
% idz=1:1:length(magnet.z);
% Aphi=zeros(length(idr),length(idz));
% Bz=zeros(length(idr),length(idz));
% Br=zeros(length(idr),length(idz));
%
% for i=1:size(magnet.subcoils,1)
% Aphi=Aphi+Icoil(i)*magnet.subcoils{i,1}(idr,idz);
% Bz=Bz+Icoil(i)*magnet.subcoils{i,2}(idr,idz);
% Br=Br+Icoil(i)*magnet.subcoils{i,3}(idr,idz);
% end
% savemagtoh5([name,'.h5'],magnet.r,magnet.z,Aphi,Br,Bz,overwrite);
savegeomtoh5('proto_geom.h5',geomcells,1e-2,overwrite);
end
c4science · Help