Muon Spaceweather Telescope for Anisotropies Greifswald - MuSTAnG -

Rainer Hippler MuSTAnG 1

Muon Spaceweather Telescope for Anisotropies

Greifswald - MuSTAnG -


International CooperationWith financial support by ESA


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


Greifswald Home town of Caspar David Friedrich

Marktplatz


Physics in Greifswald

2006


Wendelstein-7-X Greifswald

Large Stellarator for Fusion Research


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.


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)


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


MuSTAnG: phase 1 (4m2)

Upper detector layer

Lead layer

Lower detector layer


Viewing directions

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

upper layer

lower layer


MuSTAnG: phase 1 (4m2)


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


Detector element (4 × 0.25 = 1 m2)

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


Scintillator/WLS fibre/PMT


P30A module


MuSTAnG

Detector boxes


Scintillator


Scintillator plates with wavelength-shifting fibres


Detected muons (single)


Detected muons (coincident)

Upper detector-lower detector coincidences (0.0625 m2)

T: 3600 sP: 25698B: 182

S: (7.088±0.045)/s0.63 %


Measured statistical accuracy

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


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


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)


University of Greifswald

Muon Spaceweather Telescope for Anisotropies Greifswald - MuSTAnG -

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