Energy density-method: An approach for a quick estimation of quench temperatures in high-field accelerator magnets
Research output: Contribution to journal › Article › Scientific › peer-review
Details
| Original language | English |
|---|---|
| Journal | IEEE Transactions on Applied Superconductivity |
| Volume | 29 |
| Issue number | 4 |
| Early online date | 2018 |
| DOIs | |
| Publication status | Published - Jun 2019 |
| Publication type | A1 Journal article-refereed |
Abstract
Accelerator magnets for future particle accelerators are designed to work with as high energy densities as possible to achieve high fields and compact magnet designs. A key factor limiting the energy density is given by the protection in case of quench: If a quench occurs, the stored energy must be first absorbed by the windings, and the magnet temperature shall not exceed a given limit. In this paper, we present a back-of-the-envelope method for estimating the magnet's maximum temperature after a quench based on its stored energy. The method combines the existing concepts of MIITs, time margin, and protection delay to allow for easy and direct calculation of the hot-spot temperature. We apply the proposed method to several Nb3Sn dipole and quadrupole magnets developed for HL-LHC (High Luminosity LHC) and the FCC-hh (Future Circular Collider for hadron-hadron collisions) and compare the results to a more detailed simulation. The proposed Energy density-method is a useful tool for fast feedback in the early magnet design phase to ensure that the magnet is not impossible to protect.
ASJC Scopus subject areas
Keywords
- Conductivity, Copper, Energy storage, Heating systems, Magnetic circuits, Superconducting magnets, Temperature