日本物理学会第72回年次大会　大阪大学 2017年3月17日

1. T. Fujii (ICRR), M. Malacari, J. Albury, J.A. Bellido, J. Farmer, A. Galimova, P. Horvath,
M. Hrabovsky, D. Mandat, A. Matalon, J.N. Matthews, M. Merolle, X. Ni, L. Nozka,
M. Palatka, M. Pech, P. Privitera, P. Schovanek, S.B. Thomas, P. Travnicek
72 2017 3 17
http://www.fast-project.org
FAST 4
FAST
TA
Credit: Max Malacari
EUSO-TA

2. Fine pixelated camera
Low-cost and simplified/optimized FD
Too expensive to cover a huge area
2
Single or few pixels and smaller optics
Fluorescence detector Array of Single-pixel Telescopes
Segmented mirror telescope
Variable angles of elevation – steps.
15 deg 45 deg
✦ > 1019.5 eV
✦ (30,000 km2, 10×Auger or TA×4) ⇒

3. FAST
3
✦ EUSO-TA 1
✦
✦
✦ Astroparticle Physics, 74 (2016) 64-72
✦
✦ FAST (
FAST )
(Xmax)
EUSO-TA
telescope
+ FAST camera
Fig. 12. A 1018
eV shower simultaneously detected by the TA FD and the FAST protot
superimposed (see Fig. 11). In (b), the corresponding FADC trace recorded by the FAS
Fig. 6. FADC signal recorded for a YAP light pulse. It is used to monitor the relative gain
of the PMT.
Fig. 7. Variation of the YAP signal during a seven hour data taking run.
70 T. Fujii et al. / Astroparticle Physics 74 (2016) 64–72
Vertical Laser
~1019.3 eV
Cosmic Ray
~1018.0 eV

4. FAST - progress in design and construction
UV Plexiglass Segmented primary mirror8 inch PMT camera
(2 x 2)
1m2 aperture
FOV = 25°x 25°
variable
tilt
Joint Laboratory of Optics Olomouc – Malargue November 2015
Prototype - October 2015
15°
45°
4Joint Laboratory of Optics in Olomouc, Czech Republic
FAST
UV band-pass
filter

5. 5
FAST
2016 10
http://www.fast-project.org
Produced by D. Mandat and M. Malacari

6. FAST (2016 10 )
6

7. FAST
7
✦ (TA)
✦ 10 MHz, 80 µs
✦ TA 21
km
Time (100 ns)
0 100 200 300 400 500 600 700 800
-30
-20
Time (100 ns)
0 100 200 300 400 500 600 700 800
-30
-20
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
-20
-10
0
10
20
30
PMT 2
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
-20
-10
0
10
20
30
40
PMT 4
80 µs
100
( )
()
FAST

8. 8
✦ : 62194 events
:
PMT 1 PMT 3
PMT 2 PMT 4
: 2016 10 5
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
-30
-20
-10
0
10
20
30
40
PMT 1
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
-30
-20
-10
0
10
20
30
PMT 3
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
-20
-10
0
10
20
30
PMT 2
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
-20
-10
0
10
20
30
40
PMT 4
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
-20
0
20
40
60
80
100
PMT 1
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
-30
-20
-10
0
10
20
30
40
PMT 3
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
-20
0
20
40
60
80
100
120
140
PMT 2
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
-20
-10
0
10
20
30
40
PMT 4
[]
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
0
200
400
600
800
1000
1200
PMT 1
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
0
200
400
600
800
1000
PMT 3
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
0
200
400
600
800
1000
PMT 2
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
0
200
400
600
800
1000
PMT 4

9. : 2016 10 5
9
✦ ->PMT -> (>35 µs)-> ->2 PMT
✦ 62194 -> 4290 -> 3950 -> 389 -> 90 events

10. Event 387: log10(E(eV)): 18.68, Zen: 61.0◦
, Azi: 63.3◦
,
Core(11.86, -11.50), Rp: 3.52, Psi: 42.8◦
, Xmax: 1113 g/cm2
FoV(1407 - 1769), Date: 20161005, Time: 06:07:38.800548560
Event 388: log10(E(eV)): 17.96, Zen: 38.8◦
, Azi: -19.6◦
,
Core(8.90, -17.03), Rp: 9.44, Psi: 82.6◦
, Xmax: 768 g/cm2
FoV(498 - 1017), Date: 20161005, Time: 06:30:06.947113522
Event 389: log10(E(eV)): 17.83, Zen: 4.7◦
, Azi: 115.2◦
,
Core(14.23, -5.41), Rp: 7.18, Psi: 86.7◦
, Xmax: 656 g/cm2
FoV(473 - 850), Date: 20161005, Time: 06:35:10.462924009
Event 393: log10(E(eV)): 18.14, Zen: 31.6◦
, Azi: 2.8◦
,
Core(6.02, -6.69), Rp: 11.96, Psi: 102.1◦
, Xmax: 762 g/cm2
FoV(373 - 991), Date: 20161005, Time: 06:51:48.292842002
Event 394: log10(E(eV)): 18.69, Zen: 61.2◦
, Azi: -9.4◦
,
Core(9.58, -20.15), Rp: 9.27, Psi: 57.3◦
, Xmax: 1021 g/cm2
FoV(829 - 1221), Date: 20161005, Time: 06:53:27.011365323
Event 395: log10(E(eV)): 18.26, Zen: 17.7◦
, Azi: -82.0◦
,
Core(13.53, -2.14), Rp: 10.39, Psi: 98.2◦
, Xmax: 769 g/cm2
FoV(303 - 890), Date: 20161005, Time: 06:53:43.909532618
10
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
-40
-20
0
20
40
60
PMT 1
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
-20
-10
0
10
20
30
40
PMT 3
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
-40
-30
-20
-10
0
10
20
30
40
50
PMT 2
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
-30
-20
-10
0
10
20
30
40
PMT 4
2016/10/05 06:37:49.525424540
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
0
500
1000
1500
2000
PMT 1
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
0
50
100
150
200
250
300
350
PMT 3
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
0
200
400
600
800
1000
PMT 2
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
0
50
100
150
200
250
300
PMT 4
2016/10/05 10:25:50.781802380
TAFD
logE = 18.08
Rp = 2.40 km
Too
close

11. 11
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
-30
-20
-10
0
10
20
30
40
50
60
PMT 1
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
0
50
100
150
200
PMT 3
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
-20
0
20
40
60
80
PMT 2
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
-20
0
20
40
60
80
100
120
PMT 4
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
-50
0
50
100
150
200
PMT 1
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
-30
-20
-10
0
10
20
30
40
PMT 3
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
-20
0
20
40
60
80
PMT 2
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
-20
-10
0
10
20
PMT 4
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
0
50
100
150
200
250
300
350
PMT 1
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
-20
0
20
40
60
80
PMT 3
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
-20
-10
0
10
20
30
PMT 2
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
-20
-10
0
10
20
30
40
50
PMT 4
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
0
50
100
150
200
PMT 1
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
-20
0
20
40
60
80
100
120
PMT 3
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
-20
0
20
40
60
80
100
PMT 2
Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
-20
0
20
40
60
80
PMT 4
128
18

12. Time (100 ns)
0 100 200 300 400 500 600 700 800
/(100ns)p.e.N
0
5
10
15
20
12
✦ 21 km
284
✦
✦ (
)
✦
✦ PMT
✦ PMT
( )
✦
( )
Sum
PMT 1
PMT 3
PMT 2
PMT 4
( )
Simulation
(Preliminary)
Data
11
Optical simulation status
FAST Simulation - example
- PSF (7.5deg diagonal) aperture input 0.5W 0.43W/PMT1, <0.001W/PMT234 (eff: 86%)
10
Optical simulation status
- axis): aperture input 0.5W 4x0.04W/PMT (eff: 32%)
FAST Simulation - example

13. 13
✦ Fluorescence detector Array of Single-pixel Telescopes (FAST)
✦
✦ FAST
✦ 2016 10 2017 1
✦ 128 18
✦ 21 km
✦
✦ 2017 1 25 GPS
✦
✦ 2017 6 FAST GPS DAQ
✦ http://www.fast-project.org