The TRISTAN project Thibaut Houdy - on behalf of the KATRIN - - PowerPoint PPT Presentation

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The TRISTAN project Thibaut Houdy - on behalf of the KATRIN - - PowerPoint PPT Presentation

Aug 28, 2023 33 likes •397 views

The TRISTAN project Thibaut Houdy - on behalf of the KATRIN collaboration and the TRISTAN team TAUP - Toyama, Japan 12/09/19 Outlines TRISTAN aims to extend the KATRIN setup with a new multj-pixel silicon drifu detector system to search for

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The TRISTAN project

Thibaut Houdy - on behalf of the KATRIN collaboration and the TRISTAN team TAUP - Toyama, Japan – 12/09/19

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TAUP 2019 The TRISTAN project - T. Houdy

  • Theoretjcal motjvatjons for a keV-sterile neutrino &

the KATRIN experiment

  • The TRISTAN project
  • First prototypes and characterizatjons
  • First TRISTAN module and toward the fjnal detector

Outlines

TRISTAN aims to extend the KATRIN setup with a new multj-pixel silicon drifu detector system to search for a keV-scale sterile neutrino signal.

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TAUP 2019 The TRISTAN project - T. Houdy

Outlines

TRISTAN aims to extend the KATRIN setup with a new multj-pixel silicon drifu detector system to search for a keV-scale sterile neutrino signal.

  • Theoretjcal motjvatjons for a keV-sterile neutrino &

the KATRIN experiment

  • The TRISTAN project
  • First prototypes and characterizatjons
  • First TRISTAN module and toward the fjnal detector
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TAUP 2019 The TRISTAN project - T. Houdy

Theoretjcal motjvatjons

Natural extension of SM :

  • minimal extension
  • right-handed neutrino : neutrino mass
  • sterile neutrino mass: eV (short-baseline anomalies),

keV (dark matter), GeV (see-saw mechanism)

  • phase space : keV-scale is favored

Standard Model

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TAUP 2019 The TRISTAN project - T. Houdy

Theoretjcal motjvatjons

Natural extension of SM :

  • minimal extension
  • right-handed neutrino : neutrino mass
  • sterile neutrino mass: eV (short-baseline anomalies),

keV (dark matter), GeV (see-saw mechanism)

  • phase space : keV-scale is favored

Dark matter candidate:

  • need of a massive, neutral and stable particle,
  • active v (neutral and stable) too light,
  • SM does not contain a viable DM candidate

Constraints :

  • x-rays (DM annihilation)
  • cosmology (growing structure)

Boyarsky et al. JPPNP, 104, 1-45, (2019)

nuMSM

  • L. Canetti,et al. PRL 110 061801 (2013)
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TAUP 2019 The TRISTAN project - T. Houdy

KATRIN experiment

  • Kinematic determination of the neutrino mass using tritium -decay

β

  • Neutrino mass reduces the endpoint and distorts the spectrum

Size : 23x10 m², 10-11 mbar Energy scale : 18.6 keV Resolution < 1 eV (Main spect.) Count rate ~ 1-103 Hz

High voltage filtering electrons

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TAUP 2019 The TRISTAN project - T. Houdy

KATRIN experiment

Entire spectrum Region close to the endpoint

mν = 0 eV mν = 1 eV

  • Kinematic determination of the neutrino mass using tritium -decay

β

  • Neutrino mass reduces the endpoint and distorts the spectrum

See plenary talk tomorrow by G. Drexlin

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TRISTAN goal

Signature of sterile neutrino Signature of neutrino mass x108

18597 18598 18599 18600

0 2 4 6 8 10 12 14 16 18 20

keV-ν

s with KATRIN means lowering the HV to scan lower energy.

→ Dramatic increase of the count rate (up to 3x108 Hz) → Integral and differential phases ( detector with good resolution) → → Highly pixelised → new detector is needed : the TRISTAN project

Energy (eV)

Energy (keV)

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SDD technology

Capability of handling high rates (> 3 x 108 cps) + Excellent energy resolutjon (300 eV @ 20 keV)

  • Silicon Drifu Detector Technology
  • Novelty: large number of pixels (about 3500)
  • Novelty: applicatjon to high-precision β-spectroscopy
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TAUP 2019 The TRISTAN project - T. Houdy

2 c m 4 c m 3 m m

TRISTAN project

Capability of handling high rates (> 3 x 108 cps) + Excellent energy resolutjon (300 eV @ 20 keV)

  • Silicon Drifu Detector Technology
  • Novelty: large number of pixels (about 3500)
  • Novelty: applicatjon to high-precision β-spectroscopy
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TAUP 2019 The TRISTAN project - T. Houdy

Capability of handling high rates (> 3 x 108 cps) + Excellent energy resolutjon (300 eV @ 20 keV)

  • Silicon Drifu Detector Technology

2 c m 4 c m 3 m m

TRISTAN project

J.Phys. G46 (2019) no.6, 065203

Current KATRIN KATRIN with TRISTAN

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TAUP 2019 The TRISTAN project - T. Houdy

Outlines

TRISTAN aims to extend the KATRIN setup with a new multj-pixel silicon drifu detector system to search for a keV-scale sterile neutrino signal.

  • Theoretjcal motjvatjons for a keV-sterile neutrino &

the KATRIN experiment

  • The TRISTAN project
  • First prototypes and characterizatjons
  • First TRISTAN module and toward the fjnal detector
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TAUP 2019 The TRISTAN project - T. Houdy

TRISTAN prototypes

CUBE

Productjon at Max Planck semiconductor laboratory (HLL)

1st generation :

  • Delivered in 2016
  • Using CUBE preamplifier
  • Characterized using x-ray
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TAUP 2019 The TRISTAN project - T. Houdy

TRISTAN prototypes

Characterisatjon with X-rays

Excellent energy resolution Low noise at high rates FWHM @ 500 ns: 150 eV 20°C

  • 30°C

1 mm 2 mm

→ Good energy resolution (< 300 eV @ 30 keV) Good performances for short peaking time → Linear response with photons → → Good energy resolution (< 300 eV @ 30 keV) Good performances for short peaking time → Linear response with photons →

J.Phys. G46 (2019) no.6, 065203

55Fe line

139 eV (FWHM) @ 5.9 keV

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TAUP 2019 The TRISTAN project - T. Houdy

TRISTAN prototypes

Characterisatjon with electrons

CUBE 1st generation :

  • Delivered in 2016
  • Using CUBE preamplifier
  • Characterized using x-ray
  • Charaterized using electrons
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TAUP 2019 The TRISTAN project - T. Houdy

TRISTAN prototypes

Characterisatjon with electrons : dead-layer ?

  • Worsen electrons resolution
  • Distort shape

Must be measured/minimized

  • Worsen electrons resolution
  • Distort shape

Must be measured/minimized

Electron peak

Photon peak

18 keV

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TAUP 2019 The TRISTAN project - T. Houdy

TRISTAN prototypes

Characterisatjon with electrons : dead-layer ?

  • Worsen electrons resolution
  • Distort shape

Must be measured/minimized

  • Worsen electrons resolution
  • Distort shape

Must be measured/minimized

Electron peak

Photon peak

18 keV

60 eV

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TAUP 2019 The TRISTAN project - T. Houdy

TRISTAN prototypes

Measurement of the dead-layer

Result cross-checked using independent method via absolute calibration (Bremsstrahlung)

Electron microscope

Courtesy of D. Siegmann

Relative measurement performed at 14 keV : (52 ± 7) nm Relative measurement performed at 14 keV : (52 ± 7) nm Different doping techniques are investigated to further reduce it. Preliminary results are promising. Different doping techniques are investigated to further reduce it. Preliminary results are promising.

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TRISTAN prototypes

Successfully implemented

CUBE 1st generation :

  • Delivered in 2016
  • Using CUBE preamplifier
  • Characterized using x-ray
  • Charaterized using electrons
  • Successfully implemented in the Troitsk
  • mass experiment and in KATRIN

ν

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TRISTAN prototypes

Successfully implemented

2017-2019 : In Troitsk nu mass spectrometer for 3H differential and integral measurements 2017-2019 : In Troitsk nu mass spectrometer for 3H differential and integral measurements 2019 : In KATRIN as Forward Beam Monitor. Commissioned, actually taking data. Will be used for next mass measurement phase 2019 : In KATRIN as Forward Beam Monitor. Commissioned, actually taking data. Will be used for next mass measurement phase

see Brunst’s & arXiv:1909.02898

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TAUP 2019 The TRISTAN project - T. Houdy

Outlines

TRISTAN aims to extend the KATRIN setup with a new multj-pixel silicon drifu detector system to search for a keV-scale sterile neutrino signal.

  • Theoretjcal motjvatjons for a keV-sterile neutrino &

the KATRIN experiment

  • The TRISTAN project
  • First prototypes and characterizatjons
  • First TRISTAN module and toward the fjnal detector
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TRISTAN Module

New generatjon of detector coming

CUBE 2nd generation (now):

  • Integrated nJFET
  • Max size : 166 pixels
  • Construction of the first TRISTAN

module

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TAUP 2019 The TRISTAN project - T. Houdy

TRISTAN Module

Ettore ASIC

166 pixel detector with integrated JFET

ASIC board, 83 channels

CeSiC material ~14 cm

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TAUP 2019 The TRISTAN project - T. Houdy

  • Former Mainz spectrometer is now used as

a monitor device for KATRIN.

  • Same principle than KATRIN and Troitsk

spectrometers : Magnetic Adiabatic Collima- tion combined with an Electrostatic Filter.

  • Former Mainz spectrometer is now used as

a monitor device for KATRIN.

  • Same principle than KATRIN and Troitsk

spectrometers : Magnetic Adiabatic Collima- tion combined with an Electrostatic Filter.

KATRIN Monitor Spectrometer

  • MoniSpec HV is coupled to the Main Spectro-

meter, scanning 83mKr to ensure HV stability.

  • Testing the TRISTAN prototype in real

conditions while improving the performance

  • f the Monitor Spectrometer
  • MoniSpec HV is coupled to the Main Spectro-

meter, scanning 83mKr to ensure HV stability.

  • Testing the TRISTAN prototype in real

conditions while improving the performance

  • f the Monitor Spectrometer
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TRISTAN Module

The structure must cooled the SDD down to -50°C while respecting low outgazing constraints (10-10 mbar vacuum)

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TAUP 2019 The TRISTAN project - T. Houdy

TRISTAN module

  • 166-pixel detector with integrated JFET
  • Commissioning beginning-2020

TRISTAN module

  • 166-pixel detector with integrated JFET
  • Commissioning beginning-2020

Towards fjnal TRISTAN

Not only scaling up the detector :

  • ADC non linearitjes*
  • Outgasing
  • High density of electronics…

*see «Impact of ADC non-linearitjes on the sensitjvity to sterile keV neutrinos with a KATRIN-like experiment», K. Dolde et al., NIMA 848, 2017

Full TRISTAN detector

  • 21 x (166-pixel module) = 3500 pixels
  • Integratjon afuer completjon of ν-mass measurement

Full TRISTAN detector

  • 21 x (166-pixel module) = 3500 pixels
  • Integratjon afuer completjon of ν-mass measurement
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  • TRISTAN as X-ray detector in the solar axion experiment IAXO
  • TRISTAN in a CubeSat space mission as Compton telescope COMPOL

2016 Air Sur l’Adour

IAXO Cube Satellite

First background measurement in shallow underground lab at TUM

Other applicatjons of TRISTAN detector

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Conclusion

  • Excellent performances demonstrated with x-rays
  • Good understanding of detector response to electrons
  • Implementation of 7-pixels prototype in realistic

conditions (FBM, Troitsk)

  • Now production of first module with 166 pixels,

ready for calibration end of 2019

  • Implementation of first module as KATRIN Monitor

Spectrometer for a real in-situ tests

  • TRISTAN SDD are promising in many other

applications

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Back-up slides

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KATRIN experiment

  • Size : 23x10 m², 10-11 mbar
  • Energy scale : 18.6 keV
  • Resolution < 1 eV (Main spect.)
  • Count rate ~ 1-103 Hz
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TAUP 2019 The TRISTAN project - T. Houdy

KATRIN Monitor Spectrometer

Principle : MAC-E fjlter

MoniSpec high voltage is coupled to the MainSpec. BUT scanning 83mKr instead of Tritium. Goal : ensure HV stability by measuring position of the K-32 line.

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TAUP 2019 The TRISTAN project - T. Houdy

KATRIN Monitor Spectrometer

Principle : MAC-E fjlter

Former Mainz spectrometer is now used as a monitor device for KATRIN. Same principle than KATRIN and Troitsk spectrometers : Magnetic Adiabatic Collimation combined with an Electrostatic Filter.

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TAUP 2019 The TRISTAN project - T. Houdy

KATRIN Monitor Spectrometer

Principle : MAC-E fjlter

MoniSpec high voltage is coupled to the MainSpec. BUT scanning 83mKr instead of Tritium. Goal : ensure HV stability by measuring position of the K-32 line.

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ADC non linearitjes

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TRISTAN prototypes

Measurement of the dead-layer : absolute calibratjon

Electron microscope

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TRISTAN prototypes

Measurement of the dead-layer : relatjve calibratjon

Dead- Layer Tilt Detector D e a d

  • L

a y e r

Electron microscope