10th Meeting of the ITPA Topical Group on Diagnostics, Moscow, Russia

1
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
First Experiments with Galvanomagnetic
Instrumentation on the Tore Supra and the JET
Fusion Facilities I.Bolshakova1, V.Coccorese2,
I.Duran3, S.Gerasimov4, R.Holyaka1, P.Moreau5,
A. Murari6, F. Saint-Laurent5, J. Stockel3 1.
Magnetic Sensor Laboratory (LPNU) 1 Kotliarevsky
Str, Lviv, 79013, UKRAINE 2. .Association
EURATOM-ENEA(CREATE), Via Claudio 21, I-80125
Napoli, ITALY 3. IPP Prague, Association
EURATOM/IPP.CR, Za Slovankou 3, 182 00 Praha 8,
CZECH REPUBLIC 4. Euratom/UKAEA Association,
Fusion Culham Science Centre, Abingdon, OX14 3EA,
UK 5. Association EURATOM-CEA, Cadarache, 13108
Saint Paul Lez Durance, FRANCE 6.Consorzio RFX,
Associazione ENEA-EURATOM per la Fusione, Corso
Stati Uniti 4, 37125 Padova, ITALY
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
2
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
Contents

• Statement of the problem
• Galvanomagnetic Instrumentation requirements
  solutions
• Integrated Magnetic Transducer Intelligent
  Functions
• Experiments with GI on TORE SUPRA, Cadarache
  (France)
• Experiments with GI on JET, Culham (UK)
• GI electronics parameters
• New High Frequency Magnetic Transducer
• Next steps
• Conclusion and acknowledgments

Abbreviated notations GI
Galvanomagnetic Instrumentation HT Hall
Transducer IMT Integrated Magnetic
Transducer
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
3
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
Statement of the problem
Two main requirements for magnetic field
measurements in fusion reactors of next
generation first the necessity to perform
accurate magnetic field measurements at steady
state (quasi-stationary mode) with the duration
up to 3600 s second operation reliability at
a considerable level of penetrating
radiation. These requirements make it difficult
to use only the traditional inductive methods
based on pick-up coils and integrators. To
solve this problem the galvanomagnetic
transducers, namely transducers based on the Hall
effect, can supplement the existing magnetic
field system based on the traditional inductive
coils, since they do not have any particular
restriction with regard to quasi-stationary and
steady-state magnetic field measurements.
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
4
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia

• Galvanomagnetic Instrumentation
• Requirements Solutions
• Special Hall Transducers for extreme operation
  conditions
• In-situ calibration
• Wide-band magnetic field measurement
• Multi-channel measurement
• High precision of measurement under considerable
  noise conditions
• Signal transfer over long distances

Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
5
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
Integrated Magnetic Transducer Intelligent
Functions
1 Hall Sensor 2 Coil 3 Substrate 4 Pins

• Magnetic field measurement in high rate mode
  (real time mode).
• Magnetic field measurement in high precision mode
  (correction mode).
• Selftesting by formation measurement of test
  magnetic field.
• Transducing function correction.
• Temperature measurement.
• Combination of galvanomagnetic and
  electromagnetic measurements in united system.

Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
6
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
Transducing function correction
Transducing function
aj - coefficients of the polynomial series
VHe  G?VHo , G - drift factor
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
7
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
3D Integrated Magnetic Transducer
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
8
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
MSL Galvanomagnetic Instrumentation
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
9
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
MSL GI Electronics
MX Multiplexer CN Control module CS1, 2
Current source 1, 2 SD Synchrodetector HA
High frequency amplifier HC High frequency
ADC LA Low frequency amplifier LC Low
frequency ADC ST Stabilizer SI Serial
interface OP Optical isolator PS Power supply
unit IMT Integrated Magnetic Transducer TL1, 2
Transmission line 1, 2
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
10
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
Experiments with GI on TORE SUPRA,Cadarache
(France)
3D IMT location on the surface of poloidal
field coil just outside the TS vessel together
with the reference 3D coil system
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
11
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
The results of magnetic field measurement on
TORE SUPRA (low frequency mode)
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
12
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
The results of magnetic field measurement on
TORE SUPRA (selfdiagnostic)
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
13
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
The results of magnetic field measurement on
TORE SUPRA (HF mode, pulse 34085)
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
14
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
The results of magnetic field measurement on
TORE SUPRA (HF mode, pulse 34085)
scale is enlarged
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
15
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
The results of magnetic field measurement on
TORE SUPRA (HF mode, pulse 34073)
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
16
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
The results of magnetic field measurement on
TORE SUPRA (HF mode, pulse 34073)
scale is enlarged
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
17
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
The same pulse (34073) getting by coil techniques
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
18
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
and temperature measurements (only for
resolution representing)
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
19
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
Experiments with GI on JET, Culham (UK)
3D IMT location
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
20
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
MSL GI on JET
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
21
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
The results of magnetic field measurement on JET
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
22
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
CASTOR collaboration
In-vessel measurements using MSL 3D Hall probe
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
23
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
GI Electronics and Software in details if it
is possible from the time point of view
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
24
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
8-channels signal conversion for 3D IMT
HF Signal compression
Kv10 _at_ Vinp lt 150 mV
Kv1 _at_ Vinp gt 150 mV
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
25
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
GI Signal Processing Components
Intelligent Sensors (IEEE 1451.2-Compatible)
AD7663, 16-Bit, 250kSPS ADC
AD855X, Zero drift OA
ADuC 824 MicroConverter, 24-Bit ADC with FLASH
MCU
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
26
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
Comparison of Galvanomagnetic and Coil methods
The parameters

• field change rate up to 1 T/sec
• duration of flat pulse 0.2?0.5 sec
• sampling frequency 1 kHz (?t 1 msec)
• measurement duration 5 sec.

Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
27
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
Comparison of Galvanomagnetic and Coil methods
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
28
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
GI Software
Two channels HF measurement
Selfdiagnostic
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
29
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
GI main parameters precision
High precisionmode of magnetic field measurement
Selfdiagnostic
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
30
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
Transmission driver for GI on TORE SUPRA
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
31
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
Transmission driver for GI on JET
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
32
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
New High Frequency Magnetic Transducer
I - traditional HT II - highly sensitive HT III
- the loop for the electromagnetic compensation

Bolshakova ?., Holyaka R. Magnetic field
measuring transducer. Patent of Ukraine 72825 of
15.04.2005
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
33
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
The bench for high frequency magnetic field
formation
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
34
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
The dumping oscillation current of test coil
signal of galvanomagnetic sensor
Current of test coil
Current of test coil
VHT (I 20 mA)
VHT (I 0 mA)
Current of test coil
Current of test coil
VHT (I -20 mA)
VHT (I 0 mA)
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
35
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
NEXT STEPS

• Collaboration with European tokamaks
• JET 2006-2007
• TORE SUPRA 2006-2008
• TEXTOR 2006-2007
• CASTOR 2006

Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
36
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
Qualification and validation of Hall Probe
System for potential applications in ITER
Residual magnetic field measurements (ex-vessel)
special techniques for self-diagnostics and
off-set drift reduction
JET
High frequency MHD analysis (in-vessel) special
techniques for electromagnetic noise elimination
and high-temperature robust Hall sensor
Tore Supra
Perturbation field measurement (fast-reciprocating
probe) integrated transducer based on Hall
sensor and pick-up coil
TEXTOR
Short magnetic pulse measurements (in-vessel)
CASTOR
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
37
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia
Conclusion

• The problem of quasi-stationary magnetic field
  measurements in fusion devices can be efficiently
  solved by using Hall-type galvanomagnetic
  transducers.
• Contrary to the traditional measuring coils, the
  HT can measure the steady-state and the
  alternating magnetic fields with sufficiently
  high accuracy.
• Proposed principles of instrumentation
  construction for quasi-stationary magnetic field
  measurements, based on the developed radiation
  hard HTs and original signal processing
  electronics, meet the requirements of extreme
  operation conditions on fusion reactors of new
  generation.
• The galvanomagnetic transducers and the
  based-on instrumentation being presented in the
  work, were used during the experiments with quasi
  steady-state magnetic fields on the tokamaks TORE
  SUPRA (France) and JET (UK).

Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua
38
10th Meeting of the ITPA Topical Group on
Diagnostics, Moscow, Russia

• Acknowledgments
• The work was supported by
• STCU (Ukraine)
• EFDA-JET (UK)
• Association EURATOM-CEA (France)
• Association EURATOM-ENEA/CREATE (Italy).

. thank you
Magnetic Sensor Laboratory, Lviv Polytechnic
National University, Ukraine. http//www.MSL.Lviv.
ua