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Page 1: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

Markus KöhliPhysikalisches Institut (LCTPC)

RheinischeFriedrich-Wilhelms-UniversitätBonn

F. P. Schmidt, M.Gruber J. Kaminski, K. Desch

High Resolution Neutron Detectionby the (y)TPC method

International Workshop on Position Sensitive Neutron Detectors 201817.05.2018

Page 2: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

1

[1] http://www-alice.gsi.de

Jalousie (Powtex) CASCADE (Reseda/Mira)

- ToF Diffractometer - - Spin Echo-

Physikalisches InstitutRuprecht-Karls-UniversitätHeidelberg

Page 3: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

The Time Projection Chamber2

[1] http://www-alice.gsi.de

Page 4: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

2

ReadoutE-Field

[1] http://www-alice.gsi.de

The Time Projection Chamber

Page 5: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

The Neutron TPC Trigger3

Neutron

Page 6: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

The Neutron TPC Trigger3

Neutron

Page 7: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

The Neutron TPC Trigger3

Neutron

Trigger

Track

&

Page 8: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

The Neutron TPC4

(not to scale)

Page 9: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

The Neutron TPC4

(not to scale)

Page 10: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

The Neutron TPC4

(not to scale)

Page 11: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

The Neutron TPC4

(not to scale)

Page 12: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

The Detector

Page 13: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

The Neutron TPC5

Page 14: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

The Neutron TPC: BODELAIRE5

Page 15: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

Field Cage Design6

Boron Carbide Boron Nitride Boron

Reflector

Scintillator

Lightguide

Reflector

Page 16: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

Field Cage Design6

Boron Carbide Boron Nitride Boron

Reflector

Scintillator

Lightguide

Reflector

Simulation: Electric Field Homogeneity

Page 17: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

The TimePix Chip7

Page 18: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

The TimePix Chip7

- 256 × 256 pixels @ 55 × 55 μm²- 1.4 × 1.4 cm²- 40 MHz clock- ENC ca. 90 e-

Page 19: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

The TimePix Chip7

- 256 × 256 pixels @ 55 × 55 μm²- 1.4 × 1.4 cm²- 40 MHz clock- ENC ca. 90 e-

Page 20: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

The TimePix Chip7

- 256 × 256 pixels @ 55 × 55 μm²- 1.4 × 1.4 cm²- 40 MHz clock- ENC ca. 90 e-

Page 21: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

The TimePix Chip7

- 256 × 256 pixels @ 55 × 55 μm²- 1.4 × 1.4 cm²- 40 MHz clock- ENC ca. 90 e-

Modes:- Time Over Threshold (TOT)- Time of Arrival (ToA)- Geiger Counter

Page 22: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

The TimePix Chip7

- 256 × 256 pixels @ 55 × 55 μm²- 1.4 × 1.4 cm²- 40 MHz clock- ENC ca. 90 e-

Modes:- Time Over Threshold (TOT)- Time of Arrival (ToA)- Geiger Counter

Page 23: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

TimePix Readout System8

Scalable Readout System

Hybrid HDMI cable Adapter card + FEC Ethernet Switch Ethernet PC

SRU

or

Page 24: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

TimePix Readout System8

Scalable Readout System

Hybrid HDMI cable Adapter card + FEC Ethernet Switch Ethernet PC

SRU

or

Page 25: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

TimePix Readout System8

Scalable Readout System

Hybrid HDMI cable Adapter card + FEC Ethernet Switch Ethernet PC

SRU

or

Page 26: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

TimePix Readout System8

Scalable Readout Unit

Virtex-6

10 GbE SFP+

40x DDTC from FECs

FECv6 (2013)

1 GbE or DDTC to SRU

Virtex-6

Page 27: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

TimePix Readout System8

Scalable Readout Unit

Virtex-6

10 GbE SFP+

40x DDTC from FECs

FECv6 (2013)

1 GbE or DDTC to SRU

Front-end ASICS implemented in SRS:• APV25, • VFAT, • Timepix, • Beetle, • [Timepix3], • [VMM3]

Virtex-6

Page 28: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

1 GbE or DDTC to SRU

TimePix Readout System8

Scalable Readout Unit

Virtex-6

10 GbE SFP+

40x DDTC from FECs

FECv6 (2013)

Front-end ASICS implemented in SRS:• APV25, • VFAT, • Timepix, • Beetle, • [Timepix3], • [VMM3]

Virtex-6

[1] Detection and imaging of high-Z materials with a muon tomography station using GEM detectors Gnanvo, K., et al. Nuclear Science Symposium Conference Record (NSS/MIC), 2010 IEEE. IEEE, 2010.

[1]

Page 29: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

TimePix Readout System9

[1] M. Lupberger, The Pixel-TPC – A feasibility study, Thesis 2016[2] H. Muller, RD51 SRS Status December 2016, CERN

Page 30: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

TimePix Readout System9

[1] M. Lupberger, The Pixel-TPC – A feasibility study, Thesis 2016[2] H. Muller, RD51 SRS Status December 2016, CERN

Octoboard:

Page 31: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

TimePix Readout System9

[1] M. Lupberger, The Pixel-TPC – A feasibility study, Thesis 2016[2] H. Muller, RD51 SRS Status December 2016, CERN

Octoboard:

Page 32: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

LCTPC Event Display10

[1] http://newsline.linearcollider.org

[1]

Page 33: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

Detecting Neutrons

Page 34: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

Test Detector11

Page 35: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

Test Detector11

Page 36: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

Test Detector11

μTPC

Page 37: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

Track Topology12

Pitch: 1.56 mmSiemsens Star Resolution: 1.4 mm

Page 38: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

12

Sim:Li

Sim:He

Track Topology

Page 39: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

Neutron Conversion Tracks13

Page 40: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

Neutron Conversion Tracks13

5-23 % Time Pixel (Random Pattern)

Page 41: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

Event Example: Lithium14

Spatial Projection

Time Projection

Page 42: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

Event Example: Helium15

Spatial Projection Time Projection

Page 43: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

Analysis and Results

Page 44: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

Energy Loss in Gas16

Page 45: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

Energy Loss in Gas16

Sim:Li

Sim:He

Page 46: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

Energy Loss in Gas16

Li

He

Spatial Projection

Sim:Li

Sim:He

Page 47: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

Energy Spectrum17

Charge [MeV]

Charge [MeV]

Folded with 25 % FWHM

Simulation: 1 μm Layer of Boron

Li

He

Page 48: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

Energy Spectrum17

Charge [MeV]

Charge [MeV]

Folded with 25 % FWHM

TOT Spectrum (fiducialized)

Li

He

Simulation: 1 μm Layer of Boron

Page 49: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

Spatial Resolution18

Boron Sheet

Drift Gap: 3.8 cm

Page 50: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

Spatial Resolution18

1 cm

Page 51: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

Spatial Resolution18

Boron Sheet

1 cm

Page 52: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

Spatial Resolution18

Pixel

Edge Projection

1 cm

Page 53: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

Spatial Resolution18

Spatial Resolution σ(95 +/- 4) μm

@ 315 V – 385 V

Pixel

Edge Projection

1 cm

Page 54: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

SummaryMarkus Köhli

Physikalisches Institut (LCTPC)

RheinischeFriedrich-Wilhelms-Universität

Bonn

High Resolution Neutron DetectionThe Neutron Time Projection Chamber

BODELAIRE

Page 55: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

SummaryMarkus Köhli

Physikalisches Institut (LCTPC)

RheinischeFriedrich-Wilhelms-Universität

Bonn

BODELAIRE Trigger & Track Principle

High Resolution Neutron DetectionThe Neutron Time Projection Chamber

Page 56: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

SummaryMarkus Köhli

Physikalisches Institut (LCTPC)

RheinischeFriedrich-Wilhelms-Universität

Bonn

BODELAIRE Trigger & Track Principle

Using both conversion products

High Resolution Neutron DetectionThe Neutron Time Projection Chamber

Page 57: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

SummaryMarkus Köhli

Physikalisches Institut (LCTPC)

RheinischeFriedrich-Wilhelms-Universität

Bonn

BODELAIRE Trigger & Track Principle

Combination of gaseous tracking detector [TimePix]and a photo sensitive detector [SiPMs]

Using both conversion products

High Resolution Neutron DetectionThe Neutron Time Projection Chamber

Page 58: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

SummaryMarkus Köhli

Physikalisches Institut (LCTPC)

RheinischeFriedrich-Wilhelms-Universität

Bonn

BODELAIRE Trigger & Track Principle

Combination of gaseous tracking detector [TimePix]and a photo sensitive detector [SiPMs]

Using both conversion products

Spatial Resolution σ(95 +/- 4) μm

High Resolution Neutron DetectionThe Neutron Time Projection Chamber

[ ]

Page 59: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

[ ]

SummaryMarkus Köhli

Physikalisches Institut (LCTPC)

RheinischeFriedrich-Wilhelms-Universität

Bonn

Spatial Resolution σ(95 +/- 4) μm

BODELAIRE Trigger & Track Principle

Combination of gaseous tracking detector [TimePix]and a photo sensitive detector [SiPMs]

Using both conversion products

High Resolution Neutron DetectionThe Neutron Time Projection Chamber

Page 60: High Resolution Neutron Detection by the (y)TPC method · 2018. 5. 17. · 1 GbE or DDTC to SRU TimePix Readout System 8 Scalable Readout Unit Virtex-6 10 GbE SFP+ 40x DDTC from FECs

[ ]

SummaryMarkus Köhli

Physikalisches Institut (LCTPC)

RheinischeFriedrich-Wilhelms-Universität

Bonn

Spatial Resolution σ(95 +/- 4) μm

BODELAIRE Trigger & Track Principle

Combination of gaseous tracking detector [TimePix]and a photo sensitive detector [SiPMs]

Using both conversion products

High Resolution Neutron DetectionThe Neutron Time Projection Chamber