high spatial resolution in thermal neutron detection: from … · the cascade concept gem (gas...
TRANSCRIPT
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
Neutron Capture
5
30 meV
Neutron
1
Nuclear Absorption
The Helium-3 Crisis
5
AAAS, Overview of Helium-3 Supply and Demand
2
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
The European Spallation Source3
ESS TDR 2013Lund, Sweden
Linear Accelerator2 GeV
3 ms Pulse62.5 mA
ESS Instrumentation
ESS TDR 2013
3
ESS Instrumentation
5
3
ESS TDR 2013
The Detector
Heidelberg University
CASCADE detector without housing
The CASCADE Detector4
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
The CASCADE Concept
Thin (Boron) Layer
Readout
Casing
5
charge transparent substrate
The CASCADE Concept
Casing
Thin (Boron) Layer
Readout
5
The CASCADE Concept
GEM(Gas Electron Multiplier foil)
5
The CASCADE Concept
GEM(Gas Electron Multiplier foil)
5
The CASCADE Concept
c
c cc
5
The CASCADE Concept5
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
Spin Echo
Spin Echo - MIEZE10
Spin Echo - MIEZE
Sample
10
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
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
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
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
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
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
Spin Echo Measurements
time
100 kHz x16
12
Phase View
Spin Echo Measurements
time
100 kHz x16
12
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
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
BASTARD & BODELAIRE
GEM
14
To New Shores
CiPixMultichannelASIC
CASCADEUni Heidelberg
Technology available in 2000
CASCADEUni Heidelberg
Technology available in 2000
New ProjectUni Bonn
Technology available in 2017
GEM
CiPixMultichannelASIC
TPC
TimePix
VMM ASIC
14
To New Shores
15
5
High Resolution
High Rate
To New Shores
BASTARD
BODELAIRE
The BASTARD System15
5
Kapton
Strips
BoronDrift Field
Gas Gain
The BASTARD System15
5
Kapton
Strips
BoronDrift Field
Gas Gain
The BASTARD System15
5
nXYterPrototype:
M. LiebigUni HD2015
Kapton
Strips
BoronDrift Field
Gas Gain
The BASTARD System16
5
Pitch :280 μm
10 cm x 10 cm
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]
Summary & OutlookMarkus Köhli
Physikalisches Institut (LCTPC)
RheinischeFriedrich-Wilhelms-Universität
Bonn
What can 10Boron based detectors offer?
Summary & OutlookMarkus Köhli
Physikalisches Institut (LCTPC)
RheinischeFriedrich-Wilhelms-Universität
Bonn
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
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
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)
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