Progress on the RF Coupling Coil Module Design for the Mice Channel

Li, D.; Green, M.A.; Virostek, Steve; Zisman, Michael S.; Lau, W.; White, A.E.; Yang, S.Q.

doi:10.1109/pac.2005.1591297

Cited by 16 publications

(16 citation statements)

References 7 publications

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“…The muon beam momentum is recovered in the RF coupling coil module (RFCC module) [4] by accelerating the beam with a four cell 201.25 MHz RF cavities that are within the coupling magnet 2.0 to 2.5 T field [5]. After the muon beam has been re-accelerated, it passes through a second AFC module.…”

Section: The Muon Ionization Cooling Experimentsmentioning

confidence: 99%

The Design Parameters for the MICE Tracker Solenoid

Green

Chen

Juang

et al. 2007

IEEE Trans. Appl. Supercond.

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Abstract-The first superconducting magnets to be installed in the muon ionization cooling experiment (MICE) will be the tracker solenoids. The tracker solenoid module is a five coil superconducting solenoid with a 400 mm diameter warm bore that is used to provide a 4 T magnetic field for the experiment tracker module. Three of the coils are used to produce a uniform field (up to 4 T with better than 1 percent uniformity) in a region that is 300 mm in diameter and 1000 mm long. The other two coils are used to match the muon beam into the MICE cooling channel. Two 2.94-meter long superconducting tracker solenoid modules have been ordered for MICE. The tracker solenoid will be cooled using two-coolers that produce 1.5 W each at 4.2 K. The magnet system is described. The decisions that drive the magnet design will be discussed in this report.

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Section: The Muon Ionization Cooling Experimentsmentioning

confidence: 99%

The Design Parameters for the MICE Tracker Solenoid

Green

Chen

Juang

et al. 2007

IEEE Trans. Appl. Supercond.

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“…The second magnet type to be installed at MICE is absorber focus coil (AFC) module [4]. The third type of magnet to be installed at MICE will be the RF coupling coil modules [5], [6].…”

Section: Introductionmentioning

confidence: 99%

Results from the Cooler and Lead Tests

Green¹

2010

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The report presents the results of testing MICE spectrometer magnet current leads on a test apparatus that combines both the copper leads and the high temperature superconducting (HTS) leads with a single Cryomech PT415 cooler and liquid helium tank. The current is carried through the copper leads from 300 K to the top of the HTS leads. The current is then carried through the HTS leads to a feed-through from the vacuum space to the inside of a liquid helium tank. The experiment allows one to measure the performance of both cooler stages along with the performance of the leads. While the leads were powered we measured the voltage drops through the copper leads, through the HTS leads, through spliced to the feed-through, through the feed-through and through the low-temperature superconducting loop that connects one lead to the other.Measurements were made using the leads that were used in spectrometer magnet 1A and spectrometer magnet 2A. These are the same leads that were used for Superbend and Venus magnets at LBNL. The IL/A for these leads was 5.2x10 6 A m -1 . The leads turned out to be too long. The same measurements were made using the leads that were installed in magnet 2B. The magnet 2B leads had an IL/A of 3.3x10 6 A m -1 . This report discusses the cooler performance and the measured electrical performance of the lead circuit that contains the copper leads and the superconducting leads. All of the HTS leads that were installed in magnet 2B were current tested using this apparatus.

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“…A pair of coupling solenoid magnets is used to produce up to 2.6 T on the magnet centerline to keep the muon beam within the iris of thin RF cavity beryllium windows [2], [3].…”

Section: Introductionmentioning

confidence: 99%

Effects of Slip Planes on Stresses in MICE Coupling Solenoid Coil Assembly

Wang¹,

Pan

et al. 2010

IEEE Trans. Appl. Supercond.

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Abstract-The MICE superconducting coupling solenoid magnet is made from copper matrix Nb-Ti conductors with inner radius of 750 mm, length of 285 mm and thickness of 110.4 mm at room temperature. The coil is to be wound on a mandrel made of aluminum. The peak magnetic field on the conductor is about 7.3 T when fully charged at 210 A. High magnetic field and large size make the stress inside the coupling coil assembly relatively high during cool down and full energizing. The shear stress between coil winding and aluminum casing may cause premature quench. To avoid quench potential induced by stress, slip planes were designed for the coil assembly. In this paper, FE models with and without slip planes for it have been developed to simulate the stresses during the process including winding, cooling down and charging. The stress distribution in the coil assembly with and without slip planes was investigated. The results show that slip planes with low friction coefficients can improve the stress condition in the coil, especially reduce the shear stress largely so that improve the stability.

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Progress on the RF Coupling Coil Module Design for the Mice Channel

Cited by 16 publications

References 7 publications

The Design Parameters for the MICE Tracker Solenoid

The Design Parameters for the MICE Tracker Solenoid

Results from the Cooler and Lead Tests

Effects of Slip Planes on Stresses in MICE Coupling Solenoid Coil Assembly

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