AMD & SSSD Two SiPM-based scintillation detectors for Auger - - PowerPoint PPT Presentation

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AMD & SSSD Two SiPM-based scintillation detectors for Auger - - PowerPoint PPT Presentation

Feb 01, 2023 144 likes •555 views

AMD & SSSD Two SiPM-based scintillation detectors for Auger Johannes Schumacher for the Pierre Auger Collaboration HAP workshop Feb. 2016 Outline Motivation for SiPMs Part 1: AMD Aachen Muon Detector Part 2: SSSD SiPMs

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AMD & SSSD

Two SiPM-based scintillation detectors for Auger Johannes Schumacher

for the Pierre Auger Collaboration

HAP workshop Feb. 2016

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Outline

  • Motivation for SiPMs
  • Part 1: AMD – Aachen Muon Detector
  • Part 2: SSSD – SiPMs for the Scintillation Surface

Detector in the scope of AugerPrime

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Silicon Photomultipliers

aka SiPMs, MPPCs, G-APDs, …

6 mm

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1x SiPM ∑ ∫ dt

  • eq. circuit

Rate / arb.u. Charge / arb.u. dark noise

  • nly
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1x SiPM ∑ ∫ dt

  • eq. circuit

dark noise + signal Rate / arb.u. Charge / arb.u.

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Why SiPMs?

… with fibre emission Based on datasheet values WLS fibres

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The Aachen Muon Detector (AMD)

Seed-funded project: a SiPM-based prototype muon detector

PoS(ICRC2015)596

SD tank AMD

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Hamamatsu S12571-50P SiPM

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Seed-funded for ½ detector

Easiroc Steel housing

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Optical coupling (SiPM side) Optical coupling (scint. side)

μ

Scintillator efficiency test stand

measure impacts of different ...

  • ... scintillator wrapping techniques
  • ... fibre conditioning techniques
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Efficiency not matter of wrapping technique, but more likely a matter of wrapping experience!

Example: different wrapping techniques

Slightly varying efficiency remainder: Tyvek Teflon Tyvek UV

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To do list

  • test of water/light tightness
  • f steel housing next months
  • wrapping of remaining 24

naked scintillator tiles by hand

  • test measurements of

scintillator tile efficiency vs. impact position

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SiPMs for the Scintillation Surface Detector (SSD)

In the scope of AugerPrime

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Scintillator bars WLS fibres “Cookie” WLS fibres coupled to a single optical coupling (“cookie“)  single large area photosensor needed

SSD - overview

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Developed May/June 2015 5 weeks development 12 V in DC/DC µC, DAC, LDO SiPM & T-sensor Cone “cookie” enters here Pre-amps Hi & Lo gain out based on 6x6 mm^2 SensL C-series

SiPM solution for prototype detector

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SiPM solution installed in Argentina

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First data

SiPM (hi) SiPM (low) SD PMT 2 (hi) SD PMT 3 (hi) SD PMT 2 (low) SD PMT 3 (low) SD event display

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SiPM noise + electronic noise Signal?

Charge histogram

no “fingers”!!!

(due to electronic problems, i.a.)

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Subtract noise by applying exponential fit to “low p.e.” Signal!

Charge histogram

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Changes

  • Improved electronics

 less electronic noise

  • Improved cone

 higher efficiency

  • “better“ SiPM

 less dark noise, less crosstalk, higher efficiency

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  • Improved electronics
  • Improved cone
  • better SiPM
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Cone SiPM

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“fingers”! Hamamatsu S13360-6050PE, low crosstalk version ≈13 p.e.

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Measurement in Aachen

SSD scintillator bars triggered by AMD sc. tiles SiPM Fibres No cone! (Expect increased efficiency)

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≈23 p.e. thicker bars!

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Summary/outlook

  • Currently working on a two-channel SiPM solution

for AugerPrime

  • electronics will be finished in March
  • shipping in mid-April together with aluminium housing

from KIT to Argentina or in summer

  • tests (optical coupling, efficiency, reliability, noise, ...)

will be done until mid-April

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Conclusion

  • SiPMs are an excellent choice for WLS-fibre read-
  • ut, due to high efficiency
  • Low noise, high dynamic range SiPMs available!
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Appendix

some additional measurements

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≈ 5%

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measurement

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simulation

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/K courtesy of Hamamatsu

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courtesy of Hamamatsu /K

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courtesy of Hamamatsu

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courtesy of SensL

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courtesy of SensL

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courtesy of SensL

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courtesy of SensL

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courtesy of SensL

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courtesy of SensL