Magnet design for a low-emittance storage ring.
(2014) In Journal of Synchrotron Radiation 21(Pt 5). p.884-903- Abstract
- The MAX IV 3 GeV storage ring, currently under construction, pursues the goal of low electron beam emittance by using a multi-bend achromat magnet lattice, which is realised by having several consecutive magnet elements precision-machined out of a common solid iron block, 2.3-3.4 m long. With this magnet design solution, instead of having 1320 individual magnets, the MAX IV 3 GeV storage ring is built up using 140 integrated `magnet block' units, containing all these magnet elements. Major features of this magnet block design are compactness, vibration stability and that the alignment of magnet elements within each unit is given by the mechanical accuracy of the CNC machining rather than individual field measurement and adjustment. This... (More)
- The MAX IV 3 GeV storage ring, currently under construction, pursues the goal of low electron beam emittance by using a multi-bend achromat magnet lattice, which is realised by having several consecutive magnet elements precision-machined out of a common solid iron block, 2.3-3.4 m long. With this magnet design solution, instead of having 1320 individual magnets, the MAX IV 3 GeV storage ring is built up using 140 integrated `magnet block' units, containing all these magnet elements. Major features of this magnet block design are compactness, vibration stability and that the alignment of magnet elements within each unit is given by the mechanical accuracy of the CNC machining rather than individual field measurement and adjustment. This article presents practical engineering details of implementing this magnet design solution, and mechanical + magnetic field measurement results from the magnet production series. At the time of writing (spring 2014), the production series, which is totally outsourced to industry, is roughly half way through, with mechanical/magnetic QA conforming to specifications. It is the conclusion of the authors that the MAX IV magnet block concept, which has sometimes been described as new or innovative, is from a manufacturing point of view simply a collection of known mature production methods and measurement procedures, which can be executed at fixed cost with a low level of risk. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4692656
- author
- Johansson, Martin LU ; Anderberg, Bengt and Lindgren, Lars-Johan LU
- organization
- publishing date
- 2014
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Synchrotron Radiation
- volume
- 21
- issue
- Pt 5
- pages
- 884 - 903
- publisher
- International Union of Crystallography
- external identifiers
-
- pmid:25177980
- wos:000341687000006
- scopus:84912054412
- pmid:25177980
- ISSN
- 1600-5775
- DOI
- 10.1107/S160057751401666X
- language
- English
- LU publication?
- yes
- id
- 42888819-b5cf-4352-b3b7-ebf454d50314 (old id 4692656)
- date added to LUP
- 2016-04-01 10:41:23
- date last changed
- 2022-01-26 01:30:20
@article{42888819-b5cf-4352-b3b7-ebf454d50314,
abstract = {{The MAX IV 3 GeV storage ring, currently under construction, pursues the goal of low electron beam emittance by using a multi-bend achromat magnet lattice, which is realised by having several consecutive magnet elements precision-machined out of a common solid iron block, 2.3-3.4 m long. With this magnet design solution, instead of having 1320 individual magnets, the MAX IV 3 GeV storage ring is built up using 140 integrated `magnet block' units, containing all these magnet elements. Major features of this magnet block design are compactness, vibration stability and that the alignment of magnet elements within each unit is given by the mechanical accuracy of the CNC machining rather than individual field measurement and adjustment. This article presents practical engineering details of implementing this magnet design solution, and mechanical + magnetic field measurement results from the magnet production series. At the time of writing (spring 2014), the production series, which is totally outsourced to industry, is roughly half way through, with mechanical/magnetic QA conforming to specifications. It is the conclusion of the authors that the MAX IV magnet block concept, which has sometimes been described as new or innovative, is from a manufacturing point of view simply a collection of known mature production methods and measurement procedures, which can be executed at fixed cost with a low level of risk.}},
author = {{Johansson, Martin and Anderberg, Bengt and Lindgren, Lars-Johan}},
issn = {{1600-5775}},
language = {{eng}},
number = {{Pt 5}},
pages = {{884--903}},
publisher = {{International Union of Crystallography}},
series = {{Journal of Synchrotron Radiation}},
title = {{Magnet design for a low-emittance storage ring.}},
url = {{http://dx.doi.org/10.1107/S160057751401666X}},
doi = {{10.1107/S160057751401666X}},
volume = {{21}},
year = {{2014}},
}