Ç á Ä æ Ê P s M Ë O Õ » H u s g w h · 2016. 5. 17. · M Ô \ w | Ç á Ä æ Ê x s T s...
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1 ڀݚ ˙հ χϡʔτϦϊΛΘͳೋॏϕʔλյ୳ࡧͷΊͷ ߴѹΩηϊϯΨε TPC ݕग़ ثAXEL ͷ։ ژେ ߴΤωϧΪʔཧڀݚ ࢢ Թ ࢠ, த༞, [email protected], [email protected] தଜੴ, ᖊᏵ, [email protected], [email protected], 㛲 ॹཬ [email protected] 2016 (ฏ 28 )2 19 1 લஔ ·Ͱ৽ཧ TeV ΓʹΔͱӟΕ ΔࠓͷࠒɼχϡʔτϦϊͳͳͷ৽ཧ୳ ࡧͷʹΕΒͳɻ“كͳ” ԠΛݟΔʹ ѻʹɼͱϑϨʔόʔͷ߹ΛௐΔʹ ɼχϡʔτϦϊͷۃʹ TeV ΑΓ ͱߴ (ͱ 10 14 GeV ఔͷ) ΤωϧΪʔε έʔϧͷཧͷՌͰΔͱ༧ΕΔΊɼTeV εέʔϧͷཧͰӠʑͱͳΒͳɻݟΛม ΕɼχϡʔτϦϊৼಈͳͲχϡʔτϦϊͷʹ ΔݱͰඪ४తͳχϡʔτϦϊৼಈΒͷΕݟ ΕɼTeV ΑΓߴΤωϧΪʔεέʔϧͷཧΛ୳ ࡧΔͱͱʹͳΔɻχϡʔτϦϊͷ ߴΤωϧΪʔεέʔϧͷཧʹΑݱΕ Δͱ༧ɼॏӈרχϡʔτϦϊʹΑγʔ ιʔߏػಇΔͱߟʹΑΔɻγʔιʔ ߏػͷʢ༏ӉΛχϡʔτϦϊͷ CP ͷΕͰ આΑͱΔϨϓτδΣωγεͷʣେલఏͱɼ χϡʔτϦϊϚϤϥφࢠʢࢠ=ʣͰΔඞ ཁΔɻχϡʔτϦϊϚϤϥφࢠͰΔͲ ΛΔ΄΅།Ұͷ๏ͱߟΒΕΔͷχϡʔ τϦϊΛΘͳೋॏϕʔλյ (0νββ) ͷ୳ࡧͰΔɻ ɼχϡʔτϦϊۀքͷਓ 0νββ ୳ڵʹࡧຯΛ ͷવͳΕͰΔɻ 0νββ ʹɼͰʹ [1] ͳͲʹ༏Εղઆ Δɻ0νββ دʹ༩ΔχϡʔτϦϊͷ m ββ ͱछ ͷχϡʔτϦϊͷͷ m total ͷΛਤ 1 ʹɻ 0νββ ͷण m ββ ͷೋʹൺΔɻӉͷ؍ଌ Β m total < 0.23 eV (95% C.L.)[3] ͱΕΓ, m ββ ਤ 1: 0νββ دʹ༩ΔχϡʔτϦϊͷ m ββ ͱछ ͷχϡʔτϦϊͷͷ m total ͷɻϋον ϚϤϥφҐ૬ʹΑΔ෯ɻPDG2015 ͷਤΑΓൈग़ సࡌɻ Ͱ 0.1 eV ҎԼͷҬͰΕͲͰݟ ͳɻ࠷Ͱ KamLAND-Zen άϧʔϓ ʹणͷԼݶͷքهΛߋ৽ [2] ɼಘΒΕ ͷݶ·ʹͷҬͰΔɻ 0νββ ୳ࡧͰඞཁͱΕΔͷɼେͷೋॏϕʔλ յɼߴΤωϧΪʔղɼഎܠͷݮͰΔɻ ҉ࠇͷ୳ࡧͰಉͱཁٻΕΔɼͷ ߹৴߸ࢠݪͷͳͷͰɼࢠผͳͲͰΨ ϯϚઢഎܠͱམͱɻ0νββ ͰΨϯϚ ઢͱͷผΤωϧΪʔղःณɼ ԽͰؤுΔͳɻɼग़ΕΔࢠͷΤω ϧΪʔ MeV ͷ୯৭Ͱ҉ࠇ୳ʹࡧൺߴɻ 287
Transcript of Ç á Ä æ Ê P s M Ë O Õ » H u s g w h · 2016. 5. 17. · M Ô \ w | Ç á Ä æ Ê x s T s...
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1
TPC AXEL
, ,
[email protected], [email protected]
, ,
[email protected], [email protected],
2016 ( 28 ) 2 19
1
TeV
“ ”
TeV
( 1014 GeV )
TeV
TeV
CP
=
(0νββ)
0νββ
0νββ [1]
0νββ mββ
mtotal 1
0νββ mββ
mtotal < 0.23 eV (95% C.L.)[3] , mββ
1: 0νββ mββ
mtotal
PDG2015
0.1 eV
KamLAND-Zen
[2]
0νββ
0νββ
MeV
287
-
2
0νββ
TPC AXEL(A Xenon ElectroLuminescence)
2012
0νββ
2 AXEL
0νββ
Ge GERDA [4] 0.16%(FWHM)76Ge
25 kg
KamLAND-zen 136Xe 350 kg
4%(FWHM
9.4%)136Xe
W 22 eV 0.13
0νββ
Q 2.48 MeV 0.25%(FWHM)
cm
(Electroluminescence EL )
1970 [5]
-
10
2.7 3 1
10 0νββ
32 cm
2 136Xe
EL
0νββ
2: AXEL 10 136Xe
ELCC ( )
NEXT
AXEL EL
Electroluminescence Light Collection
Cell(ELCC)
2.1
10 L
2.1 ELCC
EL 2
ELCC
mm
100% EL
3
100%
EL
288
-
2
0νββ
TPC AXEL(A Xenon ElectroLuminescence)
2012
0νββ
2 AXEL
0νββ
Ge GERDA [4] 0.16%(FWHM)76Ge
25 kg
KamLAND-zen 136Xe 350 kg
4%(FWHM
9.4%)136Xe
W 22 eV 0.13
0νββ
Q 2.48 MeV 0.25%(FWHM)
cm
(Electroluminescence EL )
1970 [5]
-
10
2.7 3 1
10 0νββ
32 cm
2 136Xe
EL
0νββ
2: AXEL 10 136Xe
ELCC ( )
NEXT
AXEL EL
Electroluminescence Light Collection
Cell(ELCC)
2.1
10 L
2.1 ELCC
EL 2
ELCC
mm
100% EL
3
100%
EL
3
3: ELCC
4 EL
5 100%
EL 0.5%(r.m.s.)
ELCC
4: ELCC 7.5 mm
2.2 MPPC
EL 178 nm
ELCC
mm
APD
MEG
MPPC
5: EL
7.5 mm 1/4
(PDE)
6
10 ∼ 14% PDEMPPC
PDE
6: MPPC(Hamamatsu
Photonics 3X3MM-50UM VUV3)
PDE
MPPC ns
ELCC
EL 5 µs MPPC
105 MPPC
50 ns 1,000
5 µs
289
-
4
3 mm
50 µm 3,600 25 µm
14,400 50 µm
25 µm
25 µm
2× 104 /5 µsMPPC 3 V
1 V
%1
0.1%
2.3
25 mm PMT R8520-406
178 nm
30%
2.4
EL
JIS
MPPC
PEEK
Swagelok
VCR
2.5
CAEN 32 65 MHz
FADC 1,000
Open-It
T2K
TPC Mircormegas
FGD (
Fine Grain Detector) MPPC
ASIC AFTER
AGET AFTER/AGET
1MPPC
511 switched capacitor array
72 1 MHz 50 MHz
511
AFTER/AGET MPPC
EL 1
0νββ
320 µs
AFTER 1µs
1 MHz AFTER
50 MHz 1
MPPC
64 MPPC 64× 511× 2(+ )
FADC
64
FPGA SiTCP[6]
MPPC
T2K FGD
1 ∼50 MHz × 511
2.6
10 0νββ
32 cm
1 mm
98%
Q214Bi 11 keV Q 0.4%
7 0νββ
30
0νββ
90% 60%
241Bi
/
290
-
4
3 mm
50 µm 3,600 25 µm
14,400 50 µm
25 µm
25 µm
2× 104 /5 µsMPPC 3 V
1 V
%1
0.1%
2.3
25 mm PMT R8520-406
178 nm
30%
2.4
EL
JIS
MPPC
PEEK
Swagelok
VCR
2.5
CAEN 32 65 MHz
FADC 1,000
Open-It
T2K
TPC Mircormegas
FGD (
Fine Grain Detector) MPPC
ASIC AFTER
AGET AFTER/AGET
1MPPC
511 switched capacitor array
72 1 MHz 50 MHz
511
AFTER/AGET MPPC
EL 1
0νββ
320 µs
AFTER 1µs
1 MHz AFTER
50 MHz 1
MPPC
64 MPPC 64× 511× 2(+ )
FADC
64
FPGA SiTCP[6]
MPPC
T2K FGD
1 ∼50 MHz × 511
2.6
10 0νββ
32 cm
1 mm
98%
Q214Bi 11 keV Q 0.4%
7 0νββ
30
0νββ
90% 60%
241Bi
/
5
/
MPPC
7: 30 0νββ
(2.4 MeV)
100 mm
1,000 mm
3
1
1.
2. ELCC
3. ELCC 16 PMT
8 10 10 L
4. ELCC MPPC32
5. ELCC MPPC
64
9
MPPC 64
8: 10 L
9: 64
ELCC
10 64 ( +MPPC)
4 57Co
11 57Co
122 keV
Kα, Kβ
√E
E 0νββ
Q 2.6%(FWHM)
0.5%
MPPC
MPPC
ELCC
MPPC
291
-
6
10: 57Co MPPC
PMT
11: 64 ( +MPPC)57Co
4
4
0.5%(FWHM)
200 L, ELCC 2,000
1 10−2 eV
0νββ TPC
TPC NEXT
D. Nygren
(cos θ)
[7]
TMA
Open-It
[1]
, ,“KamLAND-Zen
”,30,No.3
,” DCBA
”,26,No.2
,” CANDLES
”,24,No.3
[2] A. Gando et al. [KamLAND-Zen Collaboration],
Phys. Rev. Lett. 110, no. 6, 062502 (2013) .
[3] P. A. R. Ade et al. [Planck Collaboration], As-
tron. Astrophys. 571, A16 (2014) .
[4] M. Agostini et al. [GERDA Collaboration], Phys.
Rev. Lett. 111, no. 12, 122503 (2013) .
[5] G. F. Knoll, “RADIATION DETEC-
TION and MEASUREMENT” Wiley;4 6
E. Aprile et al., “Noble Gas Detectors” Wiley-
VCH 6 .
[6] http://research.kek.jp/people/uchida/technologies/SiTCP/
[7] D. R. Nygren, J. Phys. Conf. Ser. 460, 012006
(2013).
1
■JAHEP
第 303回高エネルギー委員会(12/19)議事録
2015 12 19 ( ) 13:00 15:00
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( )
( )
( )
1 学術会議マスタープランシンポジウム（相原）
2 12 ( ) 13:00-18:00J-PARC
RIILC LHC J-PARC
2 ハイパーカミオカンデ計画の状況（塩澤）
1) 物理動機
𝛿𝛿!" 𝜃𝜃!"
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CP CP
CP1
CP 𝛿𝛿!"
|sin 𝛿𝛿!" | > 0.6 𝛿𝛿!" 𝛿𝛿!"
GUT
𝜋𝜋
2) マスタープラン 2014以降の進展 22
4 l
12 250
l KEK KEK
l
11 2
2 0.37Mt2/3 20
1 DUNE10 JUNO 20
(PMT) 20%40%
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http://research.kek.jp/people/uchida/technologies/SiTCP/
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