Muon Spaceweather
Telescope for Anisotropies
Greifswald
- MuSTAnG -
Rainer Hippler
MuSTAnG
1
International Cooperation
With financial
support by ESA
Rainer Hippler
MuSTAnG
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Co-Authors
A. Mengel, U Greifswald, Germany
F. Jansen, 1A Greifswald, Germany
G. Bartling, 1A Greifswald, Germany
W. Göhler, HTS Coswig, Germany
K. Munakata, Shinshu University, Japan
S. Yasue, Shinshu University, Japan
C. Kato, Shinshu University, Japan
M. Duldig, AAD Hobart, Australia
E. Flückiger, U Bern, Switzerland
G. Kolbe, AUS Stralsund, Germany
K. Kudela, IEP-SAS, Slovakia
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MuSTAnG
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Greifswald
Home town of Caspar David Friedrich
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MuSTAnG
Marktplatz
4
Physics in Greifswald
2006
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MuSTAnG
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Wendelstein-7-X Greifswald
Large Stellarator for
Fusion Research
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MuSTAnG
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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.
Rainer Hippler
MuSTAnG
7
Precursor Storm Signals
SSC (01:39UT 9/9 1992)
1
Nagoya V (60GV)
0
-1
(%)
Misato V (145GV)
-2
-3
Sakashita V (331GV)
-4
-5
248
250
252
254
256
day of year
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MuSTAnG
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MuSTAnG
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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
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MuSTAnG: phase 1 (4m2)
Upper detector layer
Lead layer
Lower detector layer
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MuSTAnG
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Viewing directions
upper layer
Viewing directions
are defined by
the passage of
a single muon
through one
upper and one
lower detector.
lower layer
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MuSTAnG
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MuSTAnG: phase 1
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MuSTAnG
2
(4m )
12
Asymptotic viewing directions

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Rainer Hippler
MuSTAnG
Location:
Greifswald
13 (of 49)
Viewing
directions:
V, N, E, S, W
Detector size:
0.25 m2
Rigidity spectrum:
50-150 GV
13
Detector element (4 × 0.25 = 1 m2)
Detector box:

4 scintillator plates each with
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17 wavelength-shifting fibres connected to

P30A photomultiplier modules
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MuSTAnG
14
Scintillator/WLS fibre/PMT
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MuSTAnG
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P30A module
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MuSTAnG
16
MuSTAnG
Detector boxes
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MuSTAnG
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Scintillator
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MuSTAnG
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Scintillator plates with wavelength-shifting fibres
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MuSTAnG
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Detected muons (single)
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MuSTAnG
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Detected muons (coincident)
1000
T: 3600 s
P: 25698
B:
182
Counts
800
600
S: (7.088±0.045)/s
0.63 %
400
200
0
0
1000
2000
3000
4000
Time (ns)
Upper detector-lower detector coincidences (0.0625 m2)
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MuSTAnG
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Measured statistical accuracy

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0°: 23000/h x 16 = 0.16 %
30°: 14000/h x 12 = 0.24 %
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MuSTAnG
22

Accuracy Requirement:
counts/hour/direction:
1% or better
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MuSTAnG
23
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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MuSTAnG
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MuSTAnG
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MuSTAnG
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MuSTAnG
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MuSTAnG
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University of Greifswald
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MuSTAnG
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MuSTAnG
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