Superconducting magnet package for the TESLA Test Facility

Andreev

Kerby

et al. 2012

A new superconducting quadrupole magnet for linear accelerators was fabricated at Fermilab. The magnet is designed to work inside a cryomodule in the space between SCRF cavities. SCRF cavities must be installed inside a very clean room adding issues to the magnet design, and fabrication. The designed magnet has a splittable along the vertical plane configuration and could be installed outside of the clean room around the beam pipe previously connected to neighboring cavities. For more convenient assembly and replacement a "superferric" magnet configuration with four racetrack type coils was chosen. The magnet does not have a helium vessel and is conductively cooled from the cryomodule LHe supply pipe and a helium gas return pipe. The quadrupole generates 36 T integrated magnetic field gradient, has 600 mm effective length, and the peak gradient is 54 T/m. In this paper the quadrupole magnetic, mechanical, and thermal designs are presented, along with the magnet fabrication overview and first test results.

Section: Quadrupole Magnet Designmentioning

confidence: 99%

Superconducting Splittable Quadrupole Magnet for Linear Accelerators

Andreev

Kerby

et al. 2012

“…Superconductor heating above Tc before the working cycle, and a proper degaussing may help to some extent; This was done in the LHC combined function correctors. Another approach is to separate correctors from the quadrupole [11] but also make them splittable with conduction cooling (See Fig. 6).…”

Section: Separate Dipole Correctorsmentioning

confidence: 99%

Compact Superconducting Magnet for Linear Accelerators

Andreev

Kimura

et al. 2015

New Linear Accelerators based on SCRF cavities need compact and efficient superconducting magnet packages to focus and steer electron or proton beams. These magnets should be combined with SCRF cryomodules and installed inside or between them. A recent activity in this area was directed by FNAL-KEK collaboration to splittable conduction cooled magnets. Several magnet prototypes were built and successfully tested. These magnets were designed for high energy beams used in ILC, and Project-X. Nevertheless, there is an interest to explore splittable conduction cooled magnets for new accelerators: FNAL ASTA and PIP-II, KEK STF, SLAC LCLS II. The paper describes a conceptual design of splittable conduction cooled superconducting magnet which could be mounted inside SCRF cryomodule. The magnet package combines the quadrupole magnet and dipole correctors. The presented magnetic design confirms the specified magnet package parameters.

“…The magnet for TESLA Test Facility was based on shell type coils [4]. For ILC [1], XFEL [2], and Project-X [3] relatively weak quadrupoles are based on racetrack type coils where the magnetic field is shaped by iron poles [4][5][6][7][8]. Because the beam size in these accelerators is very small, this approach is more efficient from a technological point of view.…”

Section: Quadrupole Magnet Conceptmentioning

confidence: 99%

“…These machines use various superconducting magnets to provide particle beam steering and focusing. The main beam focusing element is a superconducting quadrupole mounted inside a cryomodule between SCRF cavities [4][5][6].…”

Section: Everalmentioning

confidence: 99%

A Novel Design of Iron Dominated Superconducting Multipole Magnets With Circular Coils

2010

Abstract-Linear accelerators based on superconducting magnet technology use a large number of relatively weak superconducting quadrupoles. In this case an iron dominated quadrupole is the most cost effective solution. The field quality in this magnet is defined by iron poles; the magnet air gap is minimal as are coil ampere-turns. Nevertheless, it has long racetrack type coils, which must be rigid and fixed by a mechanical structure to provide the needed mechanical stability. The novel concept of using circular superconducting coils in such a quadrupole type is described, with a discussion of quadrupole parameters, and results of 3D magnetic designs. Variants of short and long sectional quadrupoles and multipoles are presented.