diff --git a/matlab/TCV_IMAS/tcv_get_ids_nbi.m b/matlab/TCV_IMAS/tcv_get_ids_nbi.m
index e4d15d27664f6d733a1bed5fed935a65c1e2efcd..6eae1073c89c2ce97f89a8defe12c9036cc0bbc5 100644
--- a/matlab/TCV_IMAS/tcv_get_ids_nbi.m
+++ b/matlab/TCV_IMAS/tcv_get_ids_nbi.m
@@ -9,6 +9,7 @@ function [ids_nbi,ids_nbi_description,varargout] = tcv_get_ids_nbi(shot,ids_nbi_
 % Most information taken from NBI and NB_Model wiki pages:
 % https://spcwiki.epfl.ch/wiki/NBI
 % https://spcwiki.epfl.ch/wiki/NB_Model
+i_nbi1=1; i_nbi2=2; i_dnbi=3;
 
 if exist('gdat_params')
   [ids_nbi, params_nbi] = tcv_ids_headpart(shot,ids_nbi_empty,'nbi','homogeneous_time',0,'gdat_params',gdat_params,varargin{:});
@@ -27,15 +28,20 @@ ids_nbi_description='';
 %
 
 nb_units = 3; % assume 3 units: 1st NB1. 2nd NB2 and DNBI
-ids_nbi.unit(1:nb_units) = ids_nbi.unit(1); % copy empty structure for all units, then fill in
-
 % create lists of what is different for each units so that can scan through units
 unit_identifier = {'NB1', 'NB2', 'DNBI'};
 unit_name = {'25keV 1st NBH source', '50keV 2nd NBH source', 'diagnostic NBI'};
 results_subname = {'nb1', 'nb2', 'dnbi'};
+
 if shot<70811
-  results_subname = {'nbh', 'nb2', 'dnbi'};
+  unit_identifier = {'NB1', 'DNBI'};
+  unit_name = {'25keV 1st NBH source', 'diagnostic NBI'};
+  results_subname = {'nbh','dnbi'};
+  nb_units = 2; % assume 2 units: 1st NBI and DNBI
 end
+nbi_indices=1:nb_units;
+ids_nbi.unit(nbi_indices) = ids_nbi.unit(1); % copy empty structure for all units, then fill in
+
 species.a = [2., 2., 1.];
 species.z_n = [1., 1., 1.];
 species.label = {'D', 'D','H'};
@@ -46,45 +52,45 @@ beamlets_group.width_horizontal = [250, 250, 87.2]*1e-3;
 beamlets_group.width_vertical = [250, 250, 87.2]*1e-3;
 
 beamlets_group.focus(1:nb_units)=struct('focal_length_horizontal',[],'focal_length_vertical',[],'width_min_horizontal',[],'width_min_vertical',[]);
-beamlets_group.focus(1).focal_length_horizontal = 3.76;
-beamlets_group.focus(1).focal_length_vertical = 3.98;
-beamlets_group.focus(1).width_min_horizontal = 21.6*1e-2;
-beamlets_group.focus(1).width_min_vertical = 9.4*1e-2;
+beamlets_group.focus(i_nbi1).focal_length_horizontal = 3.76;
+beamlets_group.focus(i_nbi1).focal_length_vertical = 3.98;
+beamlets_group.focus(i_nbi1).width_min_horizontal = 21.6*1e-2;
+beamlets_group.focus(i_nbi1).width_min_vertical = 9.4*1e-2;
 % So far NB2 parameters are merely a copy of NB1 parameters
-beamlets_group.focus(2).focal_length_horizontal = 3.76;
-beamlets_group.focus(2).focal_length_vertical = 3.98;
-beamlets_group.focus(2).width_min_horizontal = 21.6*1e-2;
-beamlets_group.focus(2).width_min_vertical = 9.4*1e-2;
-beamlets_group.focus(3).focal_length_horizontal = 1.8;
-beamlets_group.focus(3).focal_length_vertical = 1.8;
-beamlets_group.focus(3).width_min_horizontal = 12.1*1e-2;
-beamlets_group.focus(3).width_min_vertical = 12.1*1e-2;
+beamlets_group.focus(i_nbi2).focal_length_horizontal = 3.76;
+beamlets_group.focus(i_nbi2).focal_length_vertical = 3.98;
+beamlets_group.focus(i_nbi2).width_min_horizontal = 21.6*1e-2;
+beamlets_group.focus(i_nbi2).width_min_vertical = 9.4*1e-2;
+beamlets_group.focus(i_dnbi).focal_length_horizontal = 1.8;
+beamlets_group.focus(i_dnbi).focal_length_vertical = 1.8;
+beamlets_group.focus(i_dnbi).width_min_horizontal = 12.1*1e-2;
+beamlets_group.focus(i_dnbi).width_min_vertical = 12.1*1e-2;
 
 beamlets_group.divergence(1:nb_units) = struct('particle_fraction',[],'vertical',[],'horizontal',[]);
-beamlets_group.divergence(1).particle_fraction = 1.;
-beamlets_group.divergence(1).vertical = 0.59 *pi/180.;
-beamlets_group.divergence(1).horizontal = 1.4 *pi/180.;
-beamlets_group.divergence(2).particle_fraction = 1.;
-beamlets_group.divergence(2).vertical = 0.59 *pi/180.;
-beamlets_group.divergence(2).horizontal = 1.4 *pi/180.;
-beamlets_group.divergence(3).particle_fraction = 1.;
-beamlets_group.divergence(3).vertical = 0.53 *pi/180.;
-beamlets_group.divergence(3).horizontal = 0.53 *pi/180.;
+beamlets_group.divergence(i_nbi1).particle_fraction = 1.;
+beamlets_group.divergence(i_nbi1).vertical = 0.59 *pi/180.;
+beamlets_group.divergence(i_nbi1).horizontal = 1.4 *pi/180.;
+beamlets_group.divergence(i_nbi2).particle_fraction = 1.;
+beamlets_group.divergence(i_nbi2).vertical = 0.59 *pi/180.;
+beamlets_group.divergence(i_nbi2).horizontal = 1.4 *pi/180.;
+beamlets_group.divergence(i_dnbi).particle_fraction = 1.;
+beamlets_group.divergence(i_dnbi).vertical = 0.53 *pi/180.;
+beamlets_group.divergence(i_dnbi).horizontal = 0.53 *pi/180.;
 
 %dcd_NBH = psitbxdcd(4.5889, 0.0, 211.9535*pi/180, 0.0, -9.2308*pi/180);
 beamlets_group.position(1:nb_units) = struct('phi',[],'r',[],'z',[]);
-beamlets_group.position(1).phi = 211.9535*pi/180.;
-beamlets_group.position(1).r = 4.5889;
-beamlets_group.position(1).z = 0.;
-beamlets_group.position(2).phi = 58.8255*pi/180.;
-beamlets_group.position(2).r = 4.5889;
-beamlets_group.position(2).z = 0.;
-beamlets_group.position(3).phi = 295.2416*pi/180.;
-beamlets_group.position(3).r = 4.9274;
-beamlets_group.position(3).z = 0.;
+beamlets_group.position(i_nbi1).phi = 211.9535*pi/180.;
+beamlets_group.position(i_nbi1).r = 4.5889;
+beamlets_group.position(i_nbi1).z = 0.;
+beamlets_group.position(i_nbi2).phi = 58.8255*pi/180.;
+beamlets_group.position(i_nbi2).r = 4.5889;
+beamlets_group.position(i_nbi2).z = 0.;
+beamlets_group.position(i_dnbi).phi = 295.2416*pi/180.;
+beamlets_group.position(i_dnbi).r = 4.9274;
+beamlets_group.position(i_dnbi).z = 0.;
 
 params_eff = params_eff_ref;
-for iunit=1:nb_units
+for iunit=nbi_indices
   ids_nbi.unit{iunit}.identifier = unit_identifier{iunit};
   ids_nbi.unit{iunit}.name = unit_name{iunit};
   %% power
@@ -131,21 +137,9 @@ for iunit=1:nb_units
   % https://spcwiki.epfl.ch/wiki/NB_Model
   ids_nbi.unit{iunit}.beamlets_group{1}.direction = beamlets_group.direction(iunit); %clockwise
   ids_nbi.unit{iunit}.beamlets_group{1}.tangency_radius = beamlets_group.tangency_radius(iunit);
-  %     ids_nbi.unit{iunit}.beamlets_group{1}.tangency_radius_error_index: -999999999
-  %     ids_nbi.unit{iunit}.beamlets_group{1}.tangency_radius_error_lower: -9.0000e+40
-  %     ids_nbi.unit{iunit}.beamlets_group{1}.tangency_radius_error_upper: -9.0000e+40
   ids_nbi.unit{iunit}.beamlets_group{1}.angle = beamlets_group.angle(iunit); %injection parallel to midplane
-  %     ids_nbi.unit{iunit}.beamlets_group{1}.angle_error_index: -999999999
-  %     ids_nbi.unit{iunit}.beamlets_group{1}.angle_error_lower: -9.0000e+40
-  %     ids_nbi.unit{iunit}.beamlets_group{1}.angle_error_upper: -9.0000e+40
   ids_nbi.unit{iunit}.beamlets_group{1}.width_horizontal = beamlets_group.width_horizontal(iunit);
-  %     ids_nbi.unit{iunit}.beamlets_group{1}.width_horizontal_error_index: -999999999
-  %     ids_nbi.unit{iunit}.beamlets_group{1}.width_horizontal_error_lower: -9.0000e+40
-  %     ids_nbi.unit{iunit}.beamlets_group{1}.width_horizontal_error_upper: -9.0000e+40
   ids_nbi.unit{iunit}.beamlets_group{1}.width_vertical = beamlets_group.width_vertical(iunit);
-  %     ids_nbi.unit{iunit}.beamlets_group{1}.width_vertical_error_index: -999999999
-  %     ids_nbi.unit{iunit}.beamlets_group{1}.width_vertical_error_lower: -9.0000e+40
-  %     ids_nbi.unit{iunit}.beamlets_group{1}.width_vertical_error_upper: -9.0000e+40
 
   % Should always copy "leaves" only to avoid deleting non-filled in values like error_bars
   fields_to_copy = fieldnames(beamlets_group.focus(iunit));