The Ion Ring for the proposed Jefferson Lab Electron-Ion Collider require large aperture with high homogeneity, 1 T/s ramping, and significant beam losses. Two designs have been developed, both utilizing a cable-in-conduit (CIC) winding in which liquid helium flows within the conductor. Two alternative designs are being developed, with the same aperture, having maximum operating field of 3(6)...
A permanent-magnet (PM) phase shifter is constructed for a tandem elliptically polarized undulator (EPU) at TPS. To increase a reproducibility of magnetic field and be installed in a limited space, a robust mechanical structure was designed and constructed. To decrease multipole errors and optimize magnetic field, algorithms of magnet sorting and magnetic field shimming were built and...
Hybrid wiggler for SR research program at the VEPP-4 was created in the Budker Institute of Nuclear Physics. The wiggler consists of ordinary poles with coils, which generate a spatially periodic magnetic field equal to 1.8 T. Also, permanent magnets are insertion between the poles for increasing magnet field up to 2.05 T. In this paper we present the design, calculations and magnetic...
The design of helical permanent magnet undulator with a period length of 24 mm for the production of circularly and linearly polarized radiation will be discussed. The helical permanent magnet undulator consists of four pairs of helically shaped Vanadium Permendur poles located between Neodymium Iron Boron magnet blocks. This magnet arrangement is expected to produce helical fields in the...
An important criterion for the design of fast-ramping accelerator magnets is their field distribution in the time-transient regime. Eddy current effects in different components of the magnet become more or less significant depending on the field level, the ramp rate, the magnet geometry and the materials used. In this work, we focus on eddy currents in solid tension bars of laminated,...
The High Intensity Heavy-ion Accelerator Facility (HIAF) is a new major scientific infrastructure at the Institute of Modern Physics of Chinese Academy of Science (IMPCAS), which is expected to accelerate heavy ions to 12.0 GeV/u. To improve gradually heavy-ion beam energy, booster ring which is an important accelerator between i-linac and HFRS, is established for confine and deflect the heavy...
FAIR (Facility for Antiproton and Ion Research), planned to be built at the site of GSI, will include the 300 Tm fast-ramping heavy ion synchrotron SIS300. In the frame of collaboration in FAIR project IHEP has developed, produced and tested two prototypes of a SIS300 fast cycling superconducting quadrupole. The main parameters of the quadrupole are: 45 T/m central gradient, the gradient ramp...
Since several years the Institute for Beam Physics and Technology (IBPT) of the Karlsruhe Institute of Technology (KIT) is collaborating with its industrial partner Babcock Noell GmbH (BNG) in a R&D program on superconducting undulators (SCUs). At present the collaboration is primarily working on a SCU with a period length of 20 mm (SCU20). This device is foreseen to be installed at ANKA, the...
An undulator with a strong magnetic field in a short period will become an important light source device in an accelerator storage ring or a free-electron laser. The bulk YBCO can be used to construct a high-temperature-superconducting undulator with staggered array structure. The bulk YBCO of diameter 32 mm and thickness 2.5 mm was constructed and assembled as a staggered magnet array. The...
A cryogenic permanent-magnet undulator (CPMU) with 15mm period length is being constructing for the TPS. Field measurement of this undulator will be performed at cryogenic temperature, so a field strength and temperature dependent calibration system of a Hall probe is necessary. This system consists of a cryocooler and a heater to control the Hall probe temperature, a home-made dipole...
Development of a superconducting undulator prototype is ongoing at the SSRF. The 50-period superconducting magnet of this prototype is based on NbTi/Cu conductors. The period length is 16 mm. The magnetic gap is 9.5 mm and the vacuum gap is 7.5 mm. The peak value of the magnetic fields on beam axis is 0.67 T with the operation current of 400 A. Cooling system includes 4 cryocoolers and...
he SIS100, a novel heavy ion synchrotron, is the main accelerator of the FAIR complex, which is currently constructed at Darmstadt, Germany. Around 500 superconducting magnets have been contracted for the SIS100 at industry or collaboration partners. All these magnets have to be tested at cryogenic temperature in order to verify and guarantee their performances before their installation in the...
