high spatial resolution in thermal neutron detection: from … · the cascade concept gem (gas...
TRANSCRIPT
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Markus KöhliPhysikalisches Institut (LCTPC)
RheinischeFriedrich-Wilhelms-UniversitätBonn
M. Klein, U. Schmidt (Uni Heidelberg)T. Wagner, F. Schmidt, J. Kaminski, K. Desch (Uni Bonn)
DPG Frühjahrstagung Münster27.03.2017
High Spatial Resolutionin thermal Neutron Detection:
from CASCADE to BASTARD
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Neutron Capture
5
30 meV
Neutron
1
Nuclear Absorption
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The Helium-3 Crisis
5
AAAS, Overview of Helium-3 Supply and Demand
2
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The Helium-3 Crisis
5
9/11
[1] http://www.saphymo.com/photos/ecatalogue/116-2/access-control-clearance-monitors-rcp-radiological-control-for-pedestrian.jpg
[2] http://cits.uga.edu/uploads/1540compass/1540images/_compass750/RPM1.jpg
AAAS, Overview of Helium-3 Supply and Demand
[1]
[2]
2
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The European Spallation Source3
ESS TDR 2013Lund, Sweden
Linear Accelerator2 GeV
3 ms Pulse62.5 mA
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ESS Instrumentation
ESS TDR 2013
3
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ESS Instrumentation
5
3
ESS TDR 2013
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The Detector
Heidelberg University
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CASCADE detector without housing
The CASCADE Detector4
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CASCADE detector without housing
The CASCADE Detector
Readout
Electronics
Active Detection Volume
6 layers of Boron-10
128x128 crossed stripes @ 1.56 mm
5x CIPix 64ch @ FPGA 10 MHz
4
DAQ
Firmware based event reconstruction
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The CASCADE Concept
Thin (Boron) Layer
Readout
Casing
5
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charge transparent substrate
The CASCADE Concept
Casing
Thin (Boron) Layer
Readout
5
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The CASCADE Concept
GEM(Gas Electron Multiplier foil)
5
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The CASCADE Concept
GEM(Gas Electron Multiplier foil)
5
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The CASCADE Concept
c
c cc
5
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The CASCADE Concept5
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Spatial Resolution
Image of a cold neutron beam (after guide)
Cadmium sheet
Log (In
tensity
)
@RESEDA FRM II
Spatial resolution: 2.4 mm FWHM
8
2.5
mm
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Spin Echo
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Spin Echo - MIEZE10
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Spin Echo - MIEZE
Sample
10
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Spin Echo Measurements
RESEDA, FRMII: spectrometer arms
8000
7000
6000
5000
4000
3000
2000
_cou
nt_
1.41.21.00.80.6
_B 3_
Polarisation 69.6 %
3 – 15 Å @ 11% FWHM
space
11
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8000
7000
6000
5000
4000
3000
2000
_cou
nt_
1.41.21.00.80.6
_B 3_
Polarisation 69.6 %
Spin Echo Measurements
Typical Spin Echo group
space
Graphite
Sample
11
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8000
7000
6000
5000
4000
3000
2000
_cou
nt_
1.41.21.00.80.6
_B 3_
Polarisation 69.6 %
Spin Echo Measurements
Typical Spin Echo group
time
space
100 kHz x16
Graphite
Sample
11
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8000
7000
6000
5000
4000
3000
2000
_cou
nt_
1.41.21.00.80.6
_B 3_
Polarisation 69.6 %
Spin Echo Measurements
Typical Spin Echo group
time
space
100 kHz x16
Graphite
Sample
11
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8000
7000
6000
5000
4000
3000
2000
_cou
nt_
1.41.21.00.80.6
_B 3_
Polarisation 69.6 %
Spin Echo Measurements
Typical Spin Echo group
time
space
100 kHz x16
Graphite
Sample
11
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8000
7000
6000
5000
4000
3000
2000
_cou
nt_
1.41.21.00.80.6
_B 3_
Polarisation 69.6 %
Spin Echo Measurements
Typical Spin Echo group
time
space
100 kHz x16
Graphite
Sample
11
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Spin Echo Measurements
time
100 kHz x16
12
Phase View
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Spin Echo Measurements
time
100 kHz x16
12
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8000
7000
6000
5000
4000
3000
2000
_cou
nt_
1.41.21.00.80.6
_B 3_
Polarisation 69.6 %
Spin Echo Measurements
Typical Spin Echo group
space
Graphite
Sample
13
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8000
7000
6000
5000
4000
3000
2000
_cou
nt_
1.41.21.00.80.6
_B 3_
Polarisation 69.6 %
Spin Echo Measurements
Typical Spin Echo group
space
Graphite
Sample
13
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BASTARD & BODELAIRE
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GEM
14
To New Shores
CiPixMultichannelASIC
CASCADEUni Heidelberg
Technology available in 2000
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CASCADEUni Heidelberg
Technology available in 2000
New ProjectUni Bonn
Technology available in 2017
GEM
CiPixMultichannelASIC
TPC
TimePix
VMM ASIC
14
To New Shores
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15
5
High Resolution
High Rate
To New Shores
BASTARD
BODELAIRE
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The BASTARD System15
5
Kapton
Strips
BoronDrift Field
Gas Gain
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The BASTARD System15
5
Kapton
Strips
BoronDrift Field
Gas Gain
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The BASTARD System15
5
nXYterPrototype:
M. LiebigUni HD2015
Kapton
Strips
BoronDrift Field
Gas Gain
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The BASTARD System16
5
Pitch :280 μm
10 cm x 10 cm
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The BASTARD System16
5
• 4 MHz/ch• 10bit ADC• self triggered• 400 e- noise• 1 ns time resolution
VMM12011/12
VMM22013/14
[1] G. Iakovidis, RD51 MiniWeek CERN, Feb. 2017[2] H. Muller, RD51 SRS Status December 2016, CERN
[2]
[1]
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Summary & OutlookMarkus Köhli
Physikalisches Institut (LCTPC)
RheinischeFriedrich-Wilhelms-Universität
Bonn
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What can 10Boron based detectors offer?
Summary & OutlookMarkus Köhli
Physikalisches Institut (LCTPC)
RheinischeFriedrich-Wilhelms-Universität
Bonn
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high rate,spatially and time resolved detectors(for Imaging/Spin Echo applications)
What can 10Boron based detectors offer?
Summary & OutlookMarkus Köhli
Physikalisches Institut (LCTPC)
RheinischeFriedrich-Wilhelms-Universität
Bonn
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high rate,spatially and time resolved detectors(for Imaging/Spin Echo applications)
What can 10Boron based detectors offer?
BASTARD (high rate, good resolution)
Summary & OutlookMarkus Köhli
Physikalisches Institut (LCTPC)
RheinischeFriedrich-Wilhelms-Universität
Bonn
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high rate,spatially and time resolved detectors(for Imaging/Spin Echo applications)
What can 10Boron based detectors offer?
BASTARD (high rate, good resolution)
Summary & OutlookMarkus Köhli
Physikalisches Institut (LCTPC)
RheinischeFriedrich-Wilhelms-Universität
Bonn
BODELAIRE (high resolution)
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high rate,spatially and time resolved detectors(for Imaging/Spin Echo applications)
What can 10Boron based detectors offer?
BASTARD (high rate, good resolution)
Summary & OutlookMarkus Köhli
Physikalisches Institut (LCTPC)
RheinischeFriedrich-Wilhelms-Universität
Bonn
BODELAIRE (high resolution)
to be continuedT. Wagner & F. Schmidt