20 years - indico€¦ · wamhts-4 workshop, barcelona, 16.2.2017 20 years. may 2016 2. may 2016 3...
TRANSCRIPT
May 2016
1
THEVA Dünnschichttechnik GmbH
2G superconducting tape for magnet applications
Markus Bauer
WAMHTS-4 Workshop, Barcelona, 16.2.2017
20 YEARS
May 2016
2
May 2016
3
HTS – PRODUCTION LINE
Pilot line features
Modular, fully-automated
Continuous vacuum tape locking
Inline quality control
Production capacity: 150 km/yr (@ 12 mm-width)
Production tape length: 350 m, to be increased
up to 600 m, soon!
Goals
Cost efficient production
Robust process allowing high yield
Implementation of industrial standards
Stringent quality management
Setting worldwide standards
May 2016
4
THEVA Pro-Line
simple layer architecture
industrial-grade deposition technique (e-beam evaporation)
in-house designed and manufactured equipment
unique approach – all IP owned by THEVA
2G superconducting tape by PVD
Contact layer
Silver
Superconductor
GdBaCuO
Cap layer
MgO Orientation layer
ISD-MgO
E-polished substrate
Hastelloy C276
Silver
GdBCO
MgO
MgO
May 2016
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ORIENTED BUFFER LAYER
ISD MgO buffer layer
simple process, fast growth > 6 nm/s
tilted substrate (30°)
room temperature
[001]
[110]
MgO
Inclined substrate deposition (ISD)
MgO-Orientation (XRD)
tilt angle of MgO<100> b 30°
in-plane D < 10°
out-of-plane D < 4°
tape direction
May 2016
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tilt leads to overgrowth of
precipitates and misoriented regions
Jc is thickness independent!
Very high Ic possible!
positive effect of the tilt angle
Comparison of laboratory resultswith production tapes
Tunable performance
May 2016
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2,0 µm
Ic > 200 A
12 mm
3,5 µm
Ic > 400 A
12 mm
5,5 µm
Ic > 600 A
12 mm
77 K, self field
Tapestar measurements
first effect of the tilt angle
Tunable performance
60 m
May 2016
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Improving performance on long tapes
2,4 µm
Aug. 2016
Jan. 2017
3,6 µm
340 m, 12 mm
240 m, 12 mm
1000 A
1000 A
May 2016
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THEVA ProLine tapes for magnets
50 µm and 100 µm thick
Cu stabilization
12 mm width
Laminated Plated
5 µm … 20 µm surround coating
optional: pre-tinned
12 mm width available
3.4 mm … 6 mm in development
test pieces available
May 2016
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Mechanical propertiesBending test
0,0
0,2
0,4
0,6
0,8
1,0
1,2
-1,0% -0,5% 0,0% 0,5% 1,0%
RED
UC
ED C
RIT
ICA
L C
UR
REN
T
BENDING STRAIN
TPL4100
Datenreihen1 Datenreihen3
May 2016
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180° 160° 140° 120° 100° 80°
Magnetic field performance
10 T, 4.2 K
6 mm wide tapes
Ic (77K, s.f.) = 310 A
May 2016
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Magnetic Field Performance
more data available!
Typical performance at 25 K … 40 K
Typical Field dependence
0 30 60 90 120 150 180 210 240
0
1
2
3
4
5
lift fa
cto
r
angle [°]
25 K
30 K
35 K
40 K
3 T
0 1 2 3 4 5 6 7 8
0
1
2
3
4
5
6
7 Ic,min
(B || c at 30°)
25 K
30 K
35 K
40 K
lift fa
cto
rmagnetic field [T]
May 2016
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Outlook – additional pinning
Artificial pinning also
effective on ISD-MgO buffer
layer
BaHfO and BrZrO was
tested
also deposition parameters
influence pinning
Increase of performance
0 1 2 3 4 5 6 7 8 91
2
3
4
5
6
789
10
30 K, B//c
Jc (
MA
/cm
2)
B (T)
0 mol.% (GB pinning)
2.1 mol.% (Extended pinning)
8.6 mol.% (Random pinning)
0 mol.% (Production sample: BL15083)
May 2016
EUROPEAN DEVELOPMENT OF SUPERCONDUCTING TAPES
The research leading to these results has received funding from the European Union’s Seventh Framework Programme
(FP7/2007-2013) under grant agreement nº 280432
http://www.eurotapes.eu
Tapestar system
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77 K
State of the art:
• existing magnetoscan device Tapestar
• measurement of Ic along the type with 1
mm resolution at high speed
• well known, used worldwide
May 2016
EUROPEAN DEVELOPMENT OF SUPERCONDUCTING TAPES
The research leading to these results has received funding from the European Union’s Seventh Framework Programme
(FP7/2007-2013) under grant agreement nº 280432
http://www.eurotapes.eu
Advanced Tapestar System withInversion of Hall-Scanning data
previous
New:
2D-Ic map
New:
2D-Ic map
previous
May 2016
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H2020 Project : EcoSwing
• The idea is to replace a PM generator with a
superconducting generator
• full scale multi-megawatt direct-drive superconducting wind generator
• Installation on an existing modern wind turbine in Thyborøn, Denmark(3.6 MW, 15 rpm, 128 m rotor)
• THEVA is responsible for all HTS tapes and HTS coil manufacturing
“EcoSwing has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No656024.” “Herein we reflect only the author's view. The Commission is not responsible for any use that may be made of the information it contains.”
May 2016
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“EcoSwing has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No656024.” “Herein we reflect only the author's view. The Commission is not responsible for any use that may be made of the information it contains.”
40% lower weight
PM Superconductor
• All roads capability: We limit the diameter to < 4 m
• Low cost design: ‘No frills’ for superconductors
• Low weight design: Optimized for low top head mass
May 2016
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Subscale Test Coil
in LN2 conductioncooled
Ic 216 A 215 An 37 44
pole assembly
- magnetic pole piece- non magnetic
mechanical support- conduction cooling
77K
“EcoSwing has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No656024.” “Herein we reflect only the author's view. The Commission is not responsible for any use that may be made of the information it contains.”
test coil #1- single layer- 10 turns
LN2 test
May 2016
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Lap Joints
• 10 cm long lap joints (12 mm)
• Solder: In97Ag3
• highly reproducible
• typical: 4.8 n or 60 ncm² @ 77 K
Development of highly reproducible joints
portableSPS controlledjoint soldering
“EcoSwing has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No656024.” “Herein we reflect only the author's view. The Commission is not responsible for any use that may be made of the information it contains.”
May 2016
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Per coil: about 200 turns with 500 m of
copper laminated HTS wire
double pancake, insulated design,
potted using commercial resin,glass
fiber reinforced
Use of casting mold for smooth surface
optimum mechanical and thermal
contact
operating temperature < 30 K,
conduction cooled with cold heads
+ 30 coils will be produced coil pole assembly
1,4 m
“EcoSwing has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No656024.” “Herein we reflect only the author's view. The Commission is not responsible for any use that may be made of the information it contains.”
EcoSwing Generator Coils
May 2016
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Generator coilType testing
operatingconditions
“EcoSwing has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No656024.” “Herein we reflect only the author's view. The Commission is not responsible for any use that may be made of the information it contains.”
May 2016
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Summary
Pilot production line with 150 km/a (12 mm) capacity at THEVA
Ic up to
• 600 A (77K, s.f.) or 500 A/cm at 60 m
• 400 A on 200 m + long tapes
Different types and thicknesses of Cu stabilization available
12 mm wide tapes can be delivered immediately
3.4 mm … 6 mm wide tapes to be available soon!
Coil winding and casting process developed
HTS coils with size up to 1,4 m can be produced
Advanced Tapestar system with 2D-Ic-mapping
Ask for offers or samples: [email protected] or [email protected]
May 2016
THEVA Dünnschichttechnik GmbH|Rote-Kreuz-Str. 8|D-85737 Ismaning
Germany|Tel.: +49 89 923346 0|Web.: www.theva.de|Mail.: [email protected]
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Thank you!