1. HEL pre-design Diego Perini 31.10.2014

2. Superconducting solenoid Operation temperature: 4.2 K, current:about 250A, magnetic field: 5 Tesla Cooled by liquid helium Three vessels: for liquid helium, thermal screen and vacuum The helium vessel is supported by the permaglass bars in vertical and horizontal directions and in axial direction with plastic piece The main coils and the correction coils are inside the helium vessel

3. Coils The main coils and the correction coils The power connection between the main coils

4. Aegis coils

5. Thermal screen The circulation of the helium gas pipes

6. Vessels’s supports Fix point for axial direction Suspension forvertical and horizontal directions

7. Power and helium supply The current leads The connectors Supply for liquid and gas helium

8. Toroid section The gun side vacuum chamber and the toroid coils The collector side vacuum chamber and the toroid coils (section)

9. Support frame The support frame of the hollow electron lens. The rail and positioning system