1. Muon detection, towards societal applications of MPGD
Thanks to organizers and city mayor!
Sébastien Procureur

2. Features of cosmic muons
Free (already a good point at that time)
Natural
Continuous radiation
Highly penetrating
Propagating along straight lines (on average)
Hidden chambers in pyramids (Alvarez, 1970)
Volcanology (Tanaka, Diaphane collaboration)

3. 2D Muography and MPGD at Saclay
If 50 cm long telescope…
Scintillator (~1 cm resolution)
Micromegas (0.3 mm resolution)
Revolution for precise imaging
WatTo exp. already elicited interests from IAEA and French Interior Ministry
Other applications in archeological or mining prospections:
cf ASACUSA
tumulus
cavity in soil
mining

4. Beyond muography: 3D tomography
Direct application for homeland security (Los Alamos, 2003)
Many projects in UK, Italy, Canada, China, Russia, France, Israel,…

5. 3D tomography and MPGD at Saclay
Performance with compact (50 cm between detectors) setup
1st goal of DNDO for
detection of 4kg of U
in 2016…
First test on a small part with Lead brick, simple POCA
…today
New applications for precise
imaging are now emerging if
longer exposure… thanks to spatial
resolution of MPGD
Detection in 2’
possible

6. 3D tomography with longer exposure
Wood board!
Limestone
Pliers
Lead brick
Iron structure in the limestone
(from Historic Monuments)
Not neutrons, not X-rays… just free muons! And with compact, transportable setup

7. Muon metrology
Muon metrology, e.g. deformation measurement of buildings
But can it work with (necessarily) compact instruments?

8. Muon metrology
Buildings in cities (old careeers, metro tunnels, vibrations, …)
Old monuments on unstable ground
Hydro dams
Bridge (road, pillars)
Tunnel construction (localization)
Landslide …
Elicited interests from several civil engineering companies

9. Development of muon telescopes at Saclay with unprecedented resolution
Conclusion
Development of muon telescopes at Saclay with unprecedented resolution
→ using genetic multiplexing => low consumption, cheap, transportable, autonomous
→ without external trigger (DREAM auto-trigger function)
These instruments have lots of applications, existing or new
→ muography: times better resolutions
than existing telescopes
→ tomography: very compact instruments,
transportable for in situ experiments
→ metrology: can now reach positioning at
20-40 m distance, even with obstacles
Elicited many interests in different fields, from government to industry
There is a lot to do, and we are of course open to collaborations!

11. Addendum: genetic multiplexing with pixels
Genetic multiplexing presented in 3rd MPGD conference (Zaragoza)
questions whether it can be extended to 2D (pixels)
→ fully isotropic, no unfavoured direction
→ but virtually impossible to make connections with electronics!

12. Addendum: genetic multiplexing with pixels
A practical solution is to multiplex on the basis of 2 prime numbers p and q
l: returning strip pitch (~0.2 mm)
px: pixel pitch along one direction

13. Addendum: genetic multiplexing with pixels
Example with 1 and 2 track events (color is time)
(NB: as in 1D, the degree of multiplexing can be adjusted to the flux)