Test of Short Mockups for Optimization of Superconducting Undulator Coils

Casalbuoni, S.; Gerstl, S.; Glamann, N.; Grau, Andreas; Holubek, T.; Jauregui, D. Saez de; Boffo, C.; Turenne, M.; Walter, Wolfgang

doi:10.1109/tasc.2013.2295921

Cited by 12 publications

(11 citation statements)

References 9 publications

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“…The copper to non-copper ratio of the wire is 0.6. The operation current in the NbTi coils must be below the critical current which depends on the maximum magnetic field and the temperature (4.2 K) in the coil packs (Casalbuoni et al, 2014;Karasev et al, 2013). Through simulation, we obtained the operation current and the critical current in the NbTi coils versus the maximum magnetic field in the superconductors, and the dependence of the operation current with respect to the magnetic field on-axis, as shown in Fig.…”

Section: Simulationmentioning

confidence: 99%

Development and magnetic field measurement of a 0.5-m-long superconducting undulator at IHEP

Wei¹,

Li²,

Yang³

et al. 2022

J Synchrotron Radiat

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Undulators are important devices for accelerator-based light sources whose magnetic field quality determines the photon beam performance. Superconducting-type undulators have been developing rapidly in recent years around the world. The insertion device group at the Institute of High Energy Physics (IHEP) in China started an R&D project to develop prototypes of superconducting undulators (SCUs). A half-meter-long planar SCU has been produced recently. The SCU was designed based on the simulation program OPERA-3D giving a period length of 15 mm and a gap of 7 mm. This prototype was manufactured and fabricated precisely, and was then tested by vertically submerging in liquid helium in a Dewar. After quench training several times, the maximum current in the main coils reached 480 A. The magnetic field was measured by Hall probes mounted on a sledge in the middle of the undulator gap. The peak magnetic field reached 1 T. The measurement results indicate that correction coils with suitable current can not only optimize the magnetic first and second integrals but also reduce the phase error, which is expected by design.

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Section: Simulationmentioning

confidence: 99%

Development and magnetic field measurement of a 0.5-m-long superconducting undulator at IHEP

Wei¹,

Li²,

Yang³

et al. 2022

J Synchrotron Radiat

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“…Above this limit of the engineering current density, the ohmic losses become untreatable. For the same period length and vacuum gap, especially for long period lengths, superconducting undulators can produce higher magnetic peak fields on axis than the permanent magnet ones 27 . Superconducting undulators can also be used to obtain the same magnetic peak field using a larger vacuum gap, which allows to reduce the frequency cut off of the vacuum chamber, and to transmit most of the THz radiation of interest, starting from the first harmonic up to higher frequencies.…”

Section: Feasibility Of the Thz Superconducting Undulatormentioning

confidence: 99%

Superradiant Undulator Radiation for Selective THz Control Experiments at XFELs

Tanikawa,

Karabekyan,

Kovalev

et al. 2018

Preprint

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“…The measured flux through a pinhole with 50 μm diameter at 14.9 m from the source, using a Si 111 channel cut monochromator and an ionization chamber (Oken Ltd, Japan) [4], is shown in Fig. 2a (thick dark blue line) as a function of the photon energy.…”

Section: Scu15mentioning

confidence: 99%

“…(a) Flux through a slit of 1 mm x 1 mm at 10 m from the source calculated using the ANKA beam parameters and a beam current of 100 mA, a beam stay clear of 7 mm and the measured magnetic field of the SCU20 mockup (blue line) at the nominal current of 380 A. This is compared to the flux calculated using the ideal magnetic field of 0.74 T [3] of a CPMU with 20 mm period length made of the best material available PrFeB (redline) [4]. (b) First and second field integrals measured at different values of the current in the entrance and exit correction coils [6].…”

Section: Scu20mentioning

confidence: 99%

Overview of the superconducting undulator development program at ANKA

Casalbuoni

Cecilia

Gerstl

et al. 2016

AIP Conference Proceedings

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Abstract. Superconducting undulators (SCUs) have the potential to reach higher brilliance and flux with respect to the state of the art permanent magnet insertion devices. ANKA is collaborating with the industrial partner Babcock Noell GmbH (BNG) to realize NbTi conduction cooled planar devices for low emittance light sources, and is developing the instrumentation to characterize the magnetic field properties and to measure the beam heat load to a cold bore needed for the cryogenic design of SCUs. We present here: the most recent results obtained within the ANKA-BNG collaboration, the progress achieved in the development of the instrumentation, and the in house studies on the application of high temperature superconducting (HTS) tape to the SCU technology.

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Test of Short Mockups for Optimization of Superconducting Undulator Coils

Cited by 12 publications

References 9 publications

Development and magnetic field measurement of a 0.5-m-long superconducting undulator at IHEP

Development and magnetic field measurement of a 0.5-m-long superconducting undulator at IHEP

Superradiant Undulator Radiation for Selective THz Control Experiments at XFELs

Overview of the superconducting undulator development program at ANKA

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