MT26 Abstracts, Timetable and Presentations

Tue-Mo-Po2.03-05 [12]: Performance of the new ALPHA-G conduction cooled solenoid

24 Sept 2019, 08:45

2h

Level 2 Posters 1

Poster Presentation Tue-Mo-Po2.03 - Detector Magnets II

Speaker

Cristian Boffo (Bilfinger Noell GmbH)

Description

The ALPHA experiment at the CERN Antiproton Decelerator facility underwent a major upgrade in 2018. Amongst other improvements, key is the rotation of the atom magnetic trap axis, which is now vertical. Bilfinger Noell designed and fabricated the 2 m long superconducting vertical solenoid, which provides the 1 T background field for the experiment. This is an active shielded, conduction cooled, NbTi magnet with a warm bore of 0.5 m diameter. The system is designed to achieve a field precision of less than 10 ppm in the control volume and a charging time of less than 20 minutes. This contribution describes the main design features of the system and the results of the cold tests.