@inproceedings{f09469a6cb394fbfaeca4ea8b3218ac9,
title = "New superconducting toroidal magnet system for iaxo, the international axion observatory",
abstract = "Axions are hypothetical particles that were postulated to solve one of the puzzles arising in the standard model of particle physics, namely the strong CP (Charge conjugation and Parity) problem. The new International AXion Observatory (IAXO) will incorporate the most promising solar axions detector to date, which is designed to enhance the sensitivity to the axion-photon coupling by one order of magnitude beyond the limits of the current state-of-the-art detector, the CERN Axion Solar Telescope (CAST). The IAXO detector relies on a high-magnetic field distributed over a very large volume to convert solar axions into X-ray photons. Inspired by the successful realization of the ATLAS barrel and end-cap toroids, a very large superconducting toroid is currently designed at CERN to provide the required magnetic field. This toroid will comprise eight, one meter wide and twenty one meter long, racetrack coils. The system is sized 5.2 m in diameter and 25 m in length. Its peak magnetic field is 5.4 T with a stored energy of 500 MJ. The magnetic field optimization process to arrive at maximum detector yield is described. In addition, materials selection and their structure and sizing has been determined by force and stress calculations. Thermal loads are estimated to size the necessary cryogenic power and the concept of a forced flow supercritical helium based cryogenic system is given. A quench simulation confirmed the quench protection scheme.",
keywords = "Axions, Particle detectors, Superconducting magnets, Toroids",
author = "I. Shilon and A. Dudarev and H. Silva and U. Wagner and {Ten Kate}, {H. H.J.}",
note = "Publisher Copyright: {\textcopyright}2014 AIP Publishing LLC.; 2013 Joint Cryogenic Engineering and International Cryogenic Materials Conferences, CEC/ICMC 2013 ; Conference date: 17-06-2013 Through 21-06-2013",
year = "2014",
month = jan,
day = "1",
doi = "10.1063/1.4860892",
language = "English",
series = "AIP Conference Proceedings",
publisher = "American Institute of Physics Inc.",
pages = "1559--1566",
editor = "Susan Breon and Jennifer Marquardt and Thomas Peterson and Michael DiPirro and John Pfotenhauer and Jonathan Demko and James Fesmire and Arkadiy Klebaner and Sidney Yuan and Al Zeller and Peter Kittel and Gregory Nellis and Mark Zagarola",
booktitle = "Advances in Cryogenic Engineering - Transactions of the Cryogenic Engineering Conference - CEC, Volume 59",
}