How to detect IR? · Infrared thermograms Visible photographs The passive approach is used when the...
22
Transcript of How to detect IR? · Infrared thermograms Visible photographs The passive approach is used when the...
How to detect IR?
Infrared
thermograms
Visible
photographs The passive approach is
used when the object of
interest has enough thermal
contrast with respect to the
background in order to be
detected with an infrared
sensor, e.g. a thermal IR
camera.
Examples of IR equipment at the
MIVIM laboratory, Laval University
❖ Discovered in 1930 Muons are Elementary particles coming naturally from the atmosphere
❖ Approximately 10,000 muons per minute strike each square meter
❖ About 2∼3 MILLIONS muons pass through our body each day.
Muography Basics
About 2∼3 MILLION muonspass through your body each day.
Muon radiography’s basis is just like X-ray
Silver Photographic Films
Nagoya University
Plastic Scintillator
High Energy Accelerator Research Organization (KEK)
Gaz Detector
Commissariat à l’EnergieAtomique et aux Energies
Alternatives (CEA)
3D Reconstruction
29/09/2016| 11
SETUP
Facing the rafters on the North face : 2 hotter areas detected. Distance 5 meters. 10:00 am
50 100 150 200 250 300
50
100
150
200
291.2
291.4
291.6
291.8
292
292.2
292.4
IR, 04/11/2015, 05:52 am (before sunrise), cooled camera, photo lens, 175 m from the North Pyramid face (rain colormap)
Season : mid autumn (2015)
An unusual asymmetry was observed on right side of the upper rafters , which should normally be at the same temperature as the rest of this part of the pyramid, given that this area is never directly exposed to the sun.
Nevertheless, a higher temperature was systematically measured at the top right corner at every time of the day that was verified (early morning, day and night).
Thermal anomaly on Khufu’s Pyramid November 2015
Chevron top
Chevron bottom
V-bloc
Pyramid
20 40 60 80 100 120
20
40
60
80
100
120
32
34
36
38
40
42
44
6PM 9PM 12AM 3AM 6AM 9AM 12PM 3PM
26
28
30
32
34
36
38
Time (hours)
Te
mp
era
ture
(oC
)
Chevron top
Chevron bottom
V-bloc
Pyramide
Where are we looking at?
It’s impossible to setup emulsions films in the subterranean chamber because at such depth, as the number of observed / collected Muons is very low thanks to the massive volume of stones above.
3D Reconstruction with photogrammetry of the eroded area for Muons Simulation
The area has been 3D reconstructed to be integrated in the simulations
We observe a significant extra red area.There is an unknown void!
Simulation Results
SP-NFC
ScanPyramids North Face Corridor 2017detection
KEK Position 2
East
North
West
South
Nagoya NA Position Nagoya QA Position
East
North
West
South
East
North
West
South
East
What we should observe on the muographiesfrom the Queen Chamber (simulations)
King’s Chamber
Grand Gallery
KEK Position 2
East
North
West
South
Nagoya NA Position Nagoya QA Position
East
North
West
South
East
North
West
South
East
What we have obtainedfrom the Queen Chamber (results)
KEK Position 2
East
North
West
South
Nagoya NA Position Nagoya QA Position
East
North
West
South
East
North
West
South
East
What we have obtainedfrom the Queen Chamber (results)
3 muography teams, 3 techniques, 99.9999% confidence level
The different muons excesses observed by 3 teams working independantly of each otherdetect unambiguously the existence of ScanPyramids Big Void (SP-BV)
SP-BV
SP-NFC
Grand Gallery
