| Página principal > Improvement in Training Performance by Enhancing Coil Mechanical Support in the Beam Separation Dipole Model Magnet for the HL-LHC Upgrade |
| Published Articles | |
| Title | Improvement in Training Performance by Enhancing Coil Mechanical Support in the Beam Separation Dipole Model Magnet for the HL-LHC Upgrade |
| Author(s) | Sugano, Michinaka (KEK, Tsukuba) ; Suzuki, Kento (KEK, Tsukuba) ; Nakamoto, Tatsushi (KEK, Tsukuba) ; Higashi, Norio (KEK, Tsukuba) ; Iida, Masahisa (KEK, Tsukuba) ; Ikeda, Hiroshi (KEK, Tsukuba) ; Ikemoto, Yukiko (KEK, Tsukuba) ; Kawamata, Hiroshi (KEK, Tsukuba) ; Kimura, Nobuhiro (KEK, Tsukuba) ; Ogitsu, Toru (KEK, Tsukuba) ; Ohhata, Hirokatsu (KEK, Tsukuba) ; Okada, Naoki (KEK, Tsukuba) ; Okada, Ryutaro (KEK, Tsukuba) ; Sasaki, Ken-ichi (KEK, Tsukuba) ; Tanaka, Kenichi (KEK, Tsukuba) ; Takahashi, Naoto (KEK, Tsukuba) ; Musso, Andrea (CERN) ; Todesco, Ezio (CERN) |
| Publication | 2020 |
| Number of pages | 6 |
| In: | IEEE Trans. Appl. Supercond. 30 (2020) 4001806 |
| DOI | 10.1109/TASC.2020.2972501 |
| Project | CERN HL-LHC |
| Abstract | Nb-Ti based large-aperture beam separation dipoles (MBXFs) will be installed on both sides of two interaction points, ATLAS and CMS, for the high-luminosity LHC upgrade. The most important requirements for MBXF is a coil aperture of 150 mm and the field integral of 35 T·m. Nominal dipole field is 5.6 T at 12 kA and 1.9 K. KEK is in charge of developing MBXF within a framework of CERN-KEK collaboration. This study reports training performance of three 2-m long model magnets (MBXFS1-3) assembled under different mechanical support conditions. Azimuthal pre-stress both in the straight section and at coil end, and axial pre-load were controlled to counteract Lorentz force. In MBXFS2 and 3, wet-winding was also applied but solely to the coil end. Quench start locations for the model magnets are compared to validate the effectiveness of each support method. |