1. Kiswire Advanced Technology
KAT Introduction & Products
19. May. 2015
Kiswire Advanced Technology

2. Contents
KAT Introduction
Nb3Sn Wire
NbTi Wire
MgB2 Wire
MRI Magnet 2

3. KAT Introduction

4. History
Started R&D for SC wire by internal tin process at Kiswire R&D Center
1998
Found specialized company of superconducting wire at Deajeon
2004
Supplied Nb3Sn SC wire of 2 tons for PF coil to KSTAR Project
2006
Certificated the first supplier of TF Nb3Sn wire to pass CPQS test
by ITER in the world
2008
Contracted total Korean quantity of 93 tons of TF Nb3Sn wire
2009
KAT have supplied 93 tons of TF SC wire that is ATPP cleared ( )
2013
KAT is now supplying the Nb3Sn wire for CS Conductors (CS1U, CS2U)
2015

5. Organization KAT R&D Center Production Resource Wire AD Factory 1
1Team
2Team
1Team
2Team
QA Team
P. Team
M.Team
P. Team
B.S team
Site
Analysis
Cleaning
Assembly
Gun Drill
Drawing
Cr Plating
Sn Casting
Machining
Executive
Researcher
Operator
Total 2 23 30 55

6. Capacity of SC wire Products Output [T/M) Nb3Sn 4.0 SnTi alloy 1.0
Cr plating

7. Nb3Sn Wire

8. Nb3Sn Wire Specification
ITEM
TF Strand
CS Strand
Comment
Superconductor Type
Nb3Sn
　 　 　 　 　 　
Minimum Piece Length
1,000m
Cr-plated Strand Dia
0.82 ± 0.005mm
Twist Pitch
15 ± 2mm
Twist Direction
Right Hand Twist
Cr Plating Thickness
2.0 +0/-1㎛
Cu/Non Cu Ratio
1.0 ± 0.1
RRR
> 100
Between 273 and 20K, after HT
Minimum Critical Current
Ic ≥ 250A
at 4.22K and 12T
n-value
> 20
at 4.22K and 12T in 0.1~1㎶/cm
Maximum Hysteresis Loss
< 600 mJ/cc
< 500 mJ/cc
at 4.22K over a ± 3T cycle
We started R&D of Nb3Sn wire in KISWIRE R&D Center which is located in Busan in In 2004, KAT was established in Daejun. In 2006, We supplied 2 tons of Nb3Sn wire and 65tons of chromium plating to KSTAR project. This project is

9. Strand Design Concept R-Billet NM NNb NF Ns NTa SC Strand for CS Cond.19
176
3,344 30 1

10. Homogeneity of Cr plating thickness2㎛

11. NbTi Wire

12. NbTi Wire Specification
ITEM
WIC
Round
Rectangular
Shape `
Piece Length
< 8,000m
< 4,000m
Dimension
1.7 x 2.6mm
2.5 x 3.0mm
0.5~2.0mm
> 1.0 x 1.0
Twist Pitch
60mm±20%
N/A
Twist Direction
Right Hand
Insulation type
Braid
Cu/NonCu 7 10 4 1
RRR
> 80
Jc (A/mm2)
>
n-value
>
Solder
Lead Free 12

13. Comparison of Jc Performance13

14. MgB2 Wire

15. MgB2 Wire Specification
Target
Company
Columbus
Hypertech
Hitachi
WST
KAT
Country
Italy
USA
Japan
China
Korea
Process
Ex-situ
In-situ
(CTFF)
(IMD)
Drawing & Rolling
Wire
design
Diameter (Φ)
1.13
0.7~0.9
1.5
<1
No. of fila.
37, 61
19, 36, 61 37
6, 36
6, 18, 36
S. Fraction(%)
17~20
13~18 18
20~25
Length (km)
3~4 6 1
1.2 8
Performance
Jc (A/cm2)
240,000
110,000
80,000
200,000
측정자장 (T) 2 5 3
측정온도 (K) 20
4.2
Performance
Unit
Current
Jc 3T)
A/cm2
1 ×105
Diameter Φ
1.1
Module ea 6
Length km 1
Current KAT
Achievement 15

16. MRI Magnet

17. 1.5T MRI MAGNET (KAT15B] KEY PERFORMANCE
Homogeneity: < 50cm DSV
Cryostat type: Zero boil off
Drift rate: < 0.1ppm/hr
Dimension - Bore diameter: 900mm - Length: 1,540mm - Ceiling height: < 2.6m - Weight: 5 tones
Stray field: 4m x 2.5m
Shield factor: >95%

18. 1.5T MRI MAGNET (KAT15C] KEY PERFORMANCE
Homogeneity: < 50cm DSV
Cryostat type: Zero boil off
Drift rate: < 0.1ppm/hr
Dimension - Bore diameter: 940mm - Length: 1,580mm - Ceiling height: 2.6m - Weight: 5 tones
Stray field: 4m x 2.5m
Shield factor: >95%
940mm

19. 3.0T MRI MAGNET (KAT30A] KEY PERFORMANCE
Homogeneity: < 50cm DSV
Cryostat type: Zero boil off
Drift rate: < 0.1ppm/hr
Dimension - Bore diameter: 930mm - Length: 1,655mm - Ceiling height: < 2.6m - Weight: 7.2 tones
Stray field: 4.52m x 2.8m

20. Magnet components

21. Superconducting Magnet
Role Magnetic field
Protection from Quench
Main Parts Superconducting Coil
Superconducting Joint
Permanent switch
Sensor (Temp, Lhe)
Protection circuit
Voltage meter

22. Helium Vessel Role Liquid helium container Main Part
Pressure vessel (ASME)
STST 304L
Suspension
Charcoal for vacuum

23. Thermal Shield Role Protection from Radiation heat
Main Parts Aluminum vessel (A5083) Suspension MLI(Multi layer insulation)

24. Outer Vacuum Can Role Vacuum container Support magnet Interface
Main Parts
Vacuum Can (STST 304L) Vacuum Port
Cold Head Interface
Main Neck Turret