Status of the CMS magnet (MT17)

Hervé, A.; Acquistapace, G.; Campi, D.; Cannarsa, Piermarco; Fabbricatore, P.; Feyzi, F.; Gerwig, H.; Grillet, J.P.; Horváth, I.; Kaftanov, V.; Kircher, F.; Loveless, R.; Maugain, J. M.; Perinić, G.; Rykaczewki, H.; Sbrissa, E.; Smith, R. P.; Veillet, L.

doi:10.1109/tasc.2002.1018425

Cited by 26 publications

(16 citation statements)

References 11 publications

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“…The muon system of the Compact Muon Solenoid (CMS) includes a 10,000-ton yoke comprised of the construction steel plates up to 620 mm thick, which return the flux of the 4 T superconducting solenoid and serve as the absorber plates of the muon detection system [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Measuring the Magnetic Flux Density in the CMS Steel Yoke

Klyukhin

Amapane

Ball

et al. 2012

J Supercond Nov Magn

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Section: Introductionmentioning

confidence: 99%

Measuring the Magnetic Flux Density in the CMS Steel Yoke

Klyukhin

Amapane

Ball

et al. 2012

J Supercond Nov Magn

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“…The inner diameter is 2.3 m, the length 5.3 m, and the coil weighs 5.5 tons [18]. Figure 3b shows the structure of the warm to cold support in ATLAS and figure 3c is a photo of the conceptual design of the CERN CMS detector cryostat which is 12.5 m long by of 6 m diameter and providing a 4 T magnetic field [19]. …”

Section: Insulations For Liquid Helium Transfer Linesmentioning

confidence: 99%

Developments in advanced and energy saving thermal isolations for cryogenic applications

Shu

Demko

Fesmire

2015

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. The cooling power consumption in large scale superconducting systems is huge and cryogenic devices used in space applications often require an extremely long cryogen holding time. To economically maintain the device at its operating temperature and minimize the refrigeration losses, high performance of thermal isolation is essential. The radiation from warm surrounding surfaces and conducting heat leaks through supports and penetrations are the dominant heat loads to the cold mass under vacuum condition. The advanced developments in various cryogenic applications to successfully reduce the heat loads through radiation and conduction are briefly and systematically discussed and evaluated in this review paper. These include: (1) thermal Insulation for different applications (foams, perlites, glass bubbles, aerogel and MLI), (2) sophisticated low-heat-leak support (cryogenic tension straps, trolley bars and posts with dedicated thermal intercepts), and (3) novel cryogenic heat switches. IntroductionKeeping temperatures of a large scale cold mass within a few kelvin of absolute zero is a great challenge. Many superconductivity projects have cold masses kilometers in length or huge complex machines, such as CERN, RHIC, Fermilab, CEBAF, DESY and ITER [1][2][3]. The high Tc superconducting applications and other usages with LO 2 , LN 2 and LH 2 present different requirements.For example, requirements for the LHC magnets distributed in a tunnel of 27 km can be summarized in terms of heat load per meter as follows [3]: total leak from 290 K vacuum vessel to 80 K shield is 4.26 W (3.76 W by MLI, 0.68 W by support) and from the 80 K shield to the cold mass is 0.18 W (0.09 W by MLI and 0.09 W by supports). Obviously, the design and implementation of high thermal efficient supports is about equally crucial to the contribution of high performance MLI.This review paper will cover energy saving cryogenic transfer lines and then discuss the sophisticated support structures in large magnets, SRF cavities, and detectors. The merit of traditional powder type insulation and newly developed aerogels insulation are compared [4]. The performance, materials and design combinations of various super-insulations or multilayer insulation (MLI) are summarized. Special attention is then given to the tests and improvements of MLI with penetrations [5]. Finally, novel cryogenic switches for thermal management are also mentioned.

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“…Solenoids are wound using the internal winding technique. The state-of-the-art technology can be illustrated through descriptions of the two large superconducting detector magnet systems, CMS and ATLAS, which are being constructed for the LHC at CERN [36], [37]. The main parameters are summarized in Table IV. The CMS detector is designed with a single solenoid magnet surrounded by a return yoke acting also as the external muon spectrometer.…”

Section: B Experiments At Acceleratorsmentioning

confidence: 99%

Advances in Superconducting Magnets for Particle Physics

Yamamoto

2004

IEEE Trans. Appl. Supercond.

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The paper reviews advances in superconducting magnet technologies for particle accelerators and detectors in high-energy and astro-particle physics experiments. In the accelerator magnets, the status of NbTi superconducting magnet is reviewed and the development of Nb 3 Sn magnets is discussed. The advances in aluminum stabilized NbTi superconducting magnets for particle detectors, such as ATLAS and CMS, and for astro-particle physics such as AMS and BESS are also discussed.

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Status of the CMS magnet (MT17)

Cited by 26 publications

References 11 publications

Measuring the Magnetic Flux Density in the CMS Steel Yoke

Measuring the Magnetic Flux Density in the CMS Steel Yoke

Developments in advanced and energy saving thermal isolations for cryogenic applications

Advances in Superconducting Magnets for Particle Physics

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