SIGMAPHI GROUP Sigmaphi Magnets: 15 M€, 95% exported, 100 people, based in Vannes (France) Sigmaphi Electronics, 4,5 M€, 43 people, based in Haguenau.

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Presentation transcript:

SIGMAPHI GROUP Sigmaphi Magnets: 15 M€, 95% exported, 100 people, based in Vannes (France) Sigmaphi Electronics, 4,5 M€, 43 people, based in Haguenau (France) Sigmaphi China, 1 M€, 12 people, 100% Sigmaphi owned, based in Beijing; same quality and management as in our French facilities Sigmaphi Japan, sales branch in Tokyo (Japan)

SIGMAPHI SUPERCONDUCTING MAGNETS Delivery BOSSE - R&D program with CNRS (P. Tixador team) for two YBCO magnet:  An electromagnetic gun  A SMES which store 1 MJ

SIGMAPHI SUPERCONDUCTING MAGNETS Electromagnetic gun: Objective: proof of concept of the S3EL concept (superconducting self-supplied electromagnetic launcher) by launching a bullet with a speed of 100 m/s For a classical electromagnetic gun we need:  A large energy storage: battery  A fast power supply: capacitor  A source of field: classically the field of rails  need of a huge current (few MA) For the S3EL concept:  A large energy storage: the superconducting magnet  A fast power supply: the superconducting magnet  A source of field: mainly the superconducting magnet + the rails  reduce the required current

SIGMAPHI SUPERCONDUCTING MAGNETS The required current is reduced but a current around A is still required  an operating current of A for the superconducting magnet. It’s too high for one tape, even if the tape have a width of 12 mm  subdivided the magnet by using XRAM system to “multiply” the current for the rail Main characteristics (not well chose):  At 4,2 K (direct or indirect cooling)  Perpendicular field around 2,5-3 T  400 A/mm²  1 m length  ≈ 40 kJ storage  2 or 4 XRAM stage  Racetrack coil without hard bending head  Mechanical structure of the cold mass close to FCM magnet or superferric dipole (ex: Fair)  But no impregnated coil Main conductor characteristics:  YBCO tapes of 12 mm  Operating current between 2500 A and 5000 A (face to face option)

SIGMAPHI SUPERCONDUCTING MAGNETS Electromagnetic gun: Objective: proof of concept of the S3EL concept (superconducting self-supplied electromagnetic launcher) by launching a bullet with a speed of 100 m/s Main issues:  Chose the final parameters of magnet: position, number of coil, type of coil (single or double pancake), operating current  Chose the conductor but it will be probably commercially available  The mechanical behavior of a no impregnated coil and how to manage this point?  Design of the warm bore and the integration of the rail gun  Eddy current during the shot (hard question) -> no metallic part for the cold mass and/or the cryostat, screening of eddy current ? Probably new issues in the future

SIGMAPHI SUPERCONDUCTING MAGNETS SMES Objective: to stock 1 MJ with a density of 20 kJ/kg of conductor Main magnet characteristics:  Liquid helium bath  Torus shape: 10 T with an angle of 5°  30 double pancakes  1000 A  400 A/mm²  5,2 km of conductor  No impregnated coil Main conductor characteristics:  YBCO tapes of 4 mm  Overall thickness of 600 µm  460 µm of stabilizer : Aluminum  23 kJ/kg Copper  13 kJ/kg  Stabilizer tape soldered on YBCO tape

SIGMAPHI SUPERCONDUCTING MAGNETS SMES Objective: to stock 1 MJ with a density of 20 kJ/kg of conductor Main issues:  The tape is not available on the market: Critical current close to state of art (too ?) Apparently first use of aluminum tape in HTS magnet: o How to solder it on YBCO tape? o RRR 100 with a correct yield strength limit o Find the aluminum tape but only 40 kg is required for the project.  The mechanical behavior of a not impregnated coil and how to manage this point?  The protection: partially solved by using XRAM system which subdivided the magnet, it’s costly but efficient.  SigmaPhi issue: first helium bath cryostat. Probably new issues in the future

SIGMAPHI SUPERCONDUCTING MAGNETS Thank you for your attention

SIGMAPHI GROUP TODAY

SIGMAPHI SUPERCONDUCTING MAGNETS JLAB DIPOLE SHMS 24 tons Warm bore 600mm Field 4.25 Tesla – 3500 A NbTi Liquid helium bath

SIGMAPHI SUPERCONDUCTING MAGNETS ON GOING PROJECTS JLAB QUADRUPOLES Q2/Q3 15 tons Warm bore 600mm Gradient 16 T/m A NbTi Liquid helium bath Delivery December 2015

SIGMAPHI SUPERCONDUCTING MAGNETS ON GOING PROJECTS LOTUS CYCLOTRON MAGNET R&D program with CEA Saclay Warm bore 514 mm Field 2.36 T A - Persistent NbTi Helium free DELIVERY Feb. 2016