Added forward ion beamline magnets.

• Reference is the EIC Design Study document from BNL.
• Currently Iron is just Air
• This reduces the secondaries produced and allows debugging of the magnetic fields.
• Magnets are just a box (yoke) with a box hole thru it.

src/GenericDetectors/beamline/compact/eic/B0pF_example.xml

 <detectors>
-  <detector id="3" name="SpectrometerMagnet" vis="RedVis" type="B0pFMag">
-    <placement x="0*m" y="0*m" z="0*m" theta="0.0" />
-    <dimensions x="1.5*m" y="1.0*m" z="1.0*m" />
-    <apperture x="0.5*m" y="0.23*m" />
-    <coil dx="0.1*m" dy="0.03*m" />
+  <detector id="3" name="B0PF_BeamlineMagnet" vis="RedVis" type="SimpleBeamlineMagnet">
+    <placement x="B0PF_XPosition" y="0*m" z="B0PF_CenterPosition" theta="B0PF_RotationAngle" />
+    <dimensions x="B0PF_InnerRadius*4" y="B0PF_InnerRadius*4" z="B0PF_Length*0.5" />
+    <apperture x="B0PF_InnerRadius*2" y="B0PF_InnerRadius*2" />
+  </detector>
+  <detector id="4" name="B0APF_BeamlineMagnet" vis="RedVis" type="SimpleBeamlineMagnet">
+    <placement x="B0APF_XPosition" y="0*m" z="B0APF_CenterPosition" theta="B0APF_RotationAngle" />
+    <dimensions x="B0APF_InnerRadius*4" y="B0APF_InnerRadius*4" z="B0APF_Length*0.5" />
+    <apperture x="B0APF_InnerRadius*2" y="B0APF_InnerRadius*2" />
+  </detector>
+  <detector id="5" name="Q1APF_BeamlineMagnet" vis="RedVis" type="SimpleBeamlineMagnet">
+    <placement x="Q1APF_XPosition" y="0*m" z="Q1APF_CenterPosition" theta="Q1APF_RotationAngle" />
+    <dimensions x="Q1APF_InnerRadius*4" y="Q1APF_InnerRadius*4" z="Q1APF_Length*0.5" />
+    <apperture x="Q1APF_InnerRadius*2" y="Q1APF_InnerRadius*2" />
+  </detector>
+  <detector id="6" name="Q1BPF_BeamlineMagnet" vis="RedVis" type="SimpleBeamlineMagnet">
+    <placement x="Q1BPF_XPosition" y="0*m" z="Q1BPF_CenterPosition" theta="Q1BPF_RotationAngle" />
+    <dimensions x="Q1BPF_InnerRadius*4" y="Q1BPF_InnerRadius*4" z="Q1BPF_Length*0.5" />
+    <apperture x="Q1BPF_InnerRadius*2" y="Q1BPF_InnerRadius*2" />
+  </detector>
+  <detector id="7" name="Q2PF_BeamlineMagnet" vis="RedVis" type="SimpleBeamlineMagnet">
+    <placement x="Q2PF_XPosition" y="0*m" z="Q2PF_CenterPosition" theta="Q2PF_RotationAngle" />
+    <dimensions x="Q2PF_InnerRadius*4" y="Q2PF_InnerRadius*4" z="Q2PF_Length*0.5" />
+    <apperture x="Q2PF_InnerRadius*2" y="Q2PF_InnerRadius*2" />
+  </detector>
+  <detector id="8" name="B1PF_BeamlineMagnet" vis="RedVis" type="SimpleBeamlineMagnet">
+    <placement x="B1PF_XPosition" y="0*m" z="B1PF_CenterPosition" theta="B1PF_RotationAngle" />
+    <dimensions x="B1PF_InnerRadius*4" y="B1PF_InnerRadius*4" z="B1PF_Length*0.5" />
+    <apperture x="B1PF_InnerRadius*2" y="B1PF_InnerRadius*2" />
+  </detector>
+  <detector id="9" name="B1APF_BeamlineMagnet" vis="RedVis" type="SimpleBeamlineMagnet">
+    <placement x="B1APF_XPosition" y="0*m" z="B1APF_CenterPosition" theta="B1APF_RotationAngle" />
+    <dimensions x="B1APF_InnerRadius*4" y="B1APF_InnerRadius*4" z="B1APF_Length*0.5" />
+    <apperture x="B1APF_InnerRadius*2" y="B1APF_InnerRadius*2" />
   </detector>
 </detectors>
 
 
+<!-- B0PF  B0APF    Q1APF     Q1BPF     Q2PF     B1PF     B1APF  -->
+