compact/fields/beamline_10x130.xml

0001 <!-- SPDX-License-Identifier: LGPL-3.0-or-later -->
0002 <!-- Copyright (C) 2023 Sylvester Joosten, Alex Jentsch, Whitney Armstrong, Simon Gardner -->
0003
0004   <define>
0005
0006     <constant name="ElectronBeamEnergy" value="10*GeV"  />
0007     <constant name="IonBeamEnergy"      value="130*GeV" />
0008
0009     <constant name="FieldScaleFactor" value="130.0/130.0"  /> <!-- only use for light ion beams!!! ASK FF EXPERTS -->
0010
0011     <comment>
0012        Backwards Fields
0013        Values taken from: https://indico.bnl.gov/event/10974/contributions/51260/
0014        Relevent values in the tables scale linearly with beam energy
0015     </comment>
0016
0017
0018     <!-- Beamline -->
0019     <constant name="Q1eR_Gradient"  value="-0.739741*tesla/meter/GeV*ElectronBeamEnergy"/>
0020     <constant name="Q2eR_Gradient"  value="0.66821*tesla/meter/GeV*ElectronBeamEnergy"/>
0021     <constant name="Q3eR_Gradient"  value="0.21674*tesla/meter/GeV*ElectronBeamEnergy"/>
0022
0023     <constant name="B2AeR_B"        value="0.0106667*tesla/GeV*ElectronBeamEnergy"/>
0024     <constant name="B2BeR_B"        value="0.0132222*tesla/GeV*ElectronBeamEnergy"/>
0025
0026     <!-- Luminosity System -->
0027     <constant name="LumiSweepMag_B"     value="1/1.2*tesla"/>
0028     <constant name="LumiAnalyzerMag_B"  value="1/1.2*tesla"/>
0029
0030
0031     <comment>
0032        Forward Fields
0033        All magnet values are input by hand and represent the implementation in EICRoot used for the Yellow Report.
0034     </comment>
0035
0036     <constant name="B0PF_GradientMax"  value="-8.12238283*tesla/m"/>
0037     <constant name="B0APF_GradientMax" value="0.0*tesla/m"/>
0038     <constant name="Q1APF_GradientMax" value="-48.9786*tesla/m"/>
0039     <constant name="Q1BPF_GradientMax" value="-10.842*tesla/m"/>
0040     <constant name="Q2PF_GradientMax"  value="16.909*tesla/m"/>
0041     <constant name="B1PF_GradientMax"  value="0.0*tesla/m"/>
0042     <constant name="B1APF_GradientMax" value="0.0*tesla/m"/>
0043     <constant name="B2PF_GradientMax"  value="0.0*tesla/m"/>
0044     <constant name="Q0EF_GradientMax" value="-13.12887*tesla/m"/>
0045     <constant name="Q1EF_GradientMax"  value="5.85089*tesla/m"/>
0046
0047     <constant name="B0PF_Bmax"  value="1.1840539*tesla"/>
0048     <constant name="B0APF_Bmax" value="-0.371977*tesla"/>
0049     <constant name="Q1APF_Bmax" value="0.0*tesla"/>
0050     <constant name="Q1BPF_Bmax" value="0.0*tesla"/>
0051     <constant name="Q2PF_Bmax"  value="0.0*tesla"/>
0052     <constant name="B1PF_Bmax"  value="1.66058*tesla"/>
0053     <constant name="B1APF_Bmax" value="1.27633*tesla"/>
0054     <constant name="B2PF_Bmax" value="-2.26384*tesla"/>
0055     <constant name="Q0EF_BMax" value="0.0*tesla"/>
0056     <constant name="Q1EF_BMax"  value="0.0*tesla"/>
0057
0058     <comment>
0059     These are the ten-sigma cuts for the Roman pots, translated to the physical layout we currently have.
0060     They are not perfectly ten-sigma for reasons of physical geometry.
0061     </comment>
0062
0063         <constant name="offset_central_RP_section" value ="0.71*cm"/>
0064     <constant name="offset_intermediate_1_RP_section" value ="0.55*cm"/>
0065     <constant name="offset_intermediate_2_RP_section" value ="0.0*cm"/>
0066     <constant name="offset_outer_RP_section" value ="0.0*cm"/>
0067
0068   </define>