rainer hipplermustang1 muon spaceweather telescope for anisotropies greifswald - mustang -

Rainer Hippler MuSTAnG 1

Muon Spaceweather Telescope for Anisotropies

Greifswald - MuSTAnG -

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International CooperationWith financial support by ESA

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Co-Authors

A. Mengel, U Greifswald, GermanyF. Jansen, 1A Greifswald, GermanyG. Bartling, 1A Greifswald, GermanyW. Göhler, HTS Coswig, GermanyK. Munakata, Shinshu University, JapanS. Yasue, Shinshu University, JapanC. Kato, Shinshu University, JapanM. Duldig, AAD Hobart, AustraliaE. Flückiger, U Bern, SwitzerlandG. Kolbe, AUS Stralsund, GermanyK. Kudela, IEP-SAS, Slovakia

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Greifswald Home town of Caspar David Friedrich

Marktplatz

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Physics in Greifswald

2006

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Wendelstein-7-X Greifswald

Large Stellarator for Fusion Research

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Spaceweather Storms

Coronal mass ejections (CME) provide hazards to the earth environment, in particular to satellites, and to power lines on ground.

Reliable spaceweather forecast required.

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Precursor Storm Signals

-5

-4

-3

-2

-1

0

1

248 250 252 254 256

(%)

day of year

SSC (01:39UT 9/9 1992)

Nagoya V (60GV)

Misato V (145GV)

Sakashita V (331GV)

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MuSTAnG

Muon Spaceweather Telescope for Anisotropies at Greifswald

Multi-directional muon telescope for spaceweather forecasting

Stage 1: 2 × 16 = 32 detectors of 0.25 m2 size each

Stage 2: Extensions to up to 2 × 36 = 72 detectors foreseen

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MuSTAnG: phase 1 (4m2)

Upper detector layer

Lead layer

Lower detector layer

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Viewing directions

Viewing directions are defined by the passage of a single muon through one upper and one lower detector.

upper layer

lower layer

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MuSTAnG: phase 1 (4m2)

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Asymptotic viewing directions

Location: Greifswald

13 (of 49) Viewing directions:V, N, E, S, W

Detector size: 0.25 m2

Rigidity spectrum: 50-150 GV

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Detector element (4 × 0.25 = 1 m2)

Detector box: 4 scintillator plates each with 17 wavelength-shifting fibres connected to P30A photomultiplier modules

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Scintillator/WLS fibre/PMT

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P30A module

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MuSTAnG

Detector boxes

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Scintillator

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Scintillator plates with wavelength-shifting fibres

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Detected muons (single)

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Detected muons (coincident)

Upper detector-lower detector coincidences (0.0625 m2)

T: 3600 sP: 25698B: 182

S: (7.088±0.045)/s0.63 %

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Measured statistical accuracy

0°: 23000/h x 16 = 0.16 % 30°: 14000/h x 12 = 0.24 %

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Accuracy Requirement: counts/hour/direction: 1% or better

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Integration of MuSTAnG into existing muon telscope network

MuSTAnG will be part of an international muon telescope network:

Nagoya (Japan) Hobart (Australia) Sao Martinho (Brazil) Bartol (USA)

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University of Greifswald

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