    % seti contrast Fresnel
    % to reconstruct from Fresnel data

    % -- setGrid
    seti.dim = 2;
    seti.rCD = 0.2;
    seti.nCD = 256;

    % -- setKernel
    seti.model = 'helmholtz';

    % -- setContrast
    %seti.contrast = 'fresnel'; % contrast function (shape)

    % -- fresnel data (loadData.m)
    seti.expData = 'fresnel';
    seti.nuMax = 10; % test(!) (may be fail in case of 1 GHz) (Warning: rank deficient...) (nuMax = 10 was used in paper)
    seti.ampCalc = 1;

    % -- inversion process (regularization)
    seti.invNo = 6;
    %seti.delta = 0.25; % roughly... set it manually...

    seti.beta = 1E-5;
    %seti.alpha = 3E-3; %balanced...
    seti.alpha = 500; % new default
    seti.tau = 1.6; % synthetic is higher...

    seti.physBounds = [-1,3,0,1]; % vgl. paper1default [-1,3,0,3]

    seti.useDis = 1;

    seti.pdaStepsize = 'fix';

    seti.nOut = 20;

    % -- figures and files
    seti.usecbarlim = 1;
    seti.cbarlim = [-0.40,2.40];

    seti.plotFreqiPda = 1E4;

    seti.plotPublish = 1;
    seti.plotFreq = 10;
    seti.saveepsc = 1;
    seti.savefig = 1;
    seti.savedata = 1;

    seti.pdaN = 10; % bei paper1default pdaN = 50;