February 9, 2011
Workshop on 'Future Prospects of Hadron Physics
at J-PARC and Large Scale Computational Physics'
Status of J-PARC
Shoji Nagamiya
J-PARC Center
Japan Atomic Energy Agency (JAEA)
High Energy Accelerator Research Organization (KEK)
1
J-PARC Power Expectation [MW]
Power Capability
Previous
Estimate
Nov. 2003
Big Earthquake
Present
Estimate
for 3 GeV
Linac Energy Recovery
300 kW 1 hour
Training
200 kW steady
145 kW
115 kW steady
Present
Estimate
for MR
at 30 GeV
KEK PS
3 kW
120 kW steady
JFY2008 JFY2009 JFY2010 JFY2011 JFY2012 JFY2013 JFY2014
2
Indication of ne appearance (non-zero q13)
6 ne candidates found!
Allowed region
Chooz 90%
upper bound
Expected BG
1.5±0.3evts
3

Prob. of 6 are all BG: 0.7%
(2.5s equiv)
(Dm232>0)
(Dm232<0)
90%CL range
Central value
3
Measurement of nm disappearance
(Dm232, sin22q23)
Single-m ring events
•104 events expected w/o osc
• 31 events detected
(Analysis A)
(Analysis B)
Number of Events
Dm2 (eV2)
Reconstructed n energy
Analysis A
Analysis B
Ratio
Best-fit (Dm2, sin22q)
Ana. A (2.6x10-3eV2 , 0.99)
Ana. B (2.6x10-3eV2 , 0.98)
sin22q
90% C.L. allowed region
Dm2 (eV2)
(GeV)
Clear disappearance and
oscillation pattern observed!!
Analysis A 2.1 ~ 3.1 x 10-3
Analysis B 2.1 ~ 3.2 x 10-3
sin2(2q)
> 0.85
> 0.84
Consistent with MINOS/SK results
4
E19 (Naruki et al.)
Search for Pentaquark Q+ in p–pK–X reaction
d
Physics Motivation
u
ー
s
u
J-PARC E19
d
- etc.)  Hadronic “direct reaction”
 positive evidences at low energy (LEPS,
p- + p  K- + X
 very narrow width ~ 1 MeV. Why?
 Previous (p-,K-) missing mass
 negative results at high energy
spectrum shows a hint of 2.6s.
Peak???
12±2 nb
p(p-,K-)
g d  K+ K- p n
T. Nakano et al.,PRC79 (2009) 025210
K++n Experiment to produce
directly Q+ must be done.
5
LINAC-1
Immediately after the Earthquake
Outside of LINAC building
is heavily damaged.
We are getting water from an outside
fire-hydrant, as original cooling water
system has not yet been fixed.
6
LINAC-2
Many pipes for
supplying cooling
water were damaged.
Placing a temporal bridge for
carrying in materials for repair.
7
LINAC-3
・ The floor level sagged 4 cm downward in the tunnel. Because accelerator cavities should
be aligned within ±1 mm to each other along the beam line for the operation, they have
been leveled and realigned where necessary.
・ Restoration work on the cooling water system and power supply is going smoothly.
Realigned accelerator
cavities of DTL and SDTL
were tested for watertightness.
8
3 GeV Synchrotron (RCS)
Immediately after
the Earthquake
Immediately after the Earthquake
new
old
The bent stage was repaired. Power has been
supplied to the RCS building.
Tilted condenser transformers were
straightened.
9
J-PARC Facility
Materials and Life Science
Experimental Facility
Nuclear
Transmutation
Hadron Beam Facility
５００ｍ
(Phase 2)
Neutrino to
Kamiokande
Linac
(330m)
3 GeV Synchrotron
(25 Hz, 1MW)
50 GeV Synchrotron
(0.75 MW)
J-PARC = Japan Proton Accelerator Research Complex
Joint Project between KEK and JAEA
10
2
Materials & Life Science
Experimental Facility (MLF)-1
Immediately after
the Earthquake
The road was re-opened after
filling depressions with pebbles.
A tilted He
tank was
removed to
repair the
foundation.
Inspection by the fire department
11
Materials & Life Science
Experimental Facility (MLF)-2
Immediately after the Earthquake
Reassembling work of shielding blocks for neutron beams in
the 2nd experimental hall (above). Inspection of the inside of
the muon beam facility after removing shielding blocks (right).
This area does not have any serious damage.
12
Materials & Life Science
Experimental Facility (MLF)-3
13
Neutrino Experimental Facility
Immediately after the Earthquake
AC device tilted toward a
depression of a road. Many
pipes were damaged
Repairing roads and plumbing
have been completed.
Realignment work of electromagnets (above) and
superconducting magnets (below) is progressing
smoothly. We also try to improve cooling power.
14
Hadron Experimental Facility
Immediately
after the
Earthquake
Repairing
roads and
plumbing have
been
completed.
15
J-PARC Recovery Schedule
20112011
4
Infrastructure
（@2011.5.20）
2012
2012
5
6
7
8
Emergency Recovery
9
10
11
12
1
2
3
Full Recovery Work
Beam Test
User Operation
Start
Linac
RCS
Investigation
Investigation
Recovery
Alignment
Beam
Commissioning
Test with
electricity
Recovery
MLF User Operation
Cooling Water
3GeV synchrotron
MR
Test with
electricity
Investigation
Recovery
Test with
electricity
NU or HD Operation
50GeV synchrotron
MLF
Investigation
Materials&Life
Experimental Facility
HD
Hadron Experimental
Facility
NU
Neutrino Experimental
Facility
Shielding recovery
BL Components
Extended Building
Investigation
Investigation
Recovery
Recovery
New Hg Target
Beam
Injection
MLF User Program
Beam
Injection
HD Experiment
Beam
Injection
NU Experiment
16
Summary before December 9th of 2011




Main Buildings were almost OK
– Many underpins for major buildings.
However, many utility buildings, roads, and added
buildings had significant damage.
– We used approximately 50 Oku Yen from a regular
operational budget.
– In addition, we received 14.2 Oku Yen (JAEA) for
immediate use and 73.4 Oku Yen (KEK) for 3 yrs.
When to recover ?
– Aiming at recovering by the end of this year.
– Obtained already a permission of 55 MW from Nov.
Operation of Next Fiscal Year
– Aiming towards 9 cycle (200 day) operations for users.
17
December 9, 2011
14:00 Beam went throughout the Linac
at 3 MeV with RFQ acceleration.
09:30 Key was on.
Nov. of 2006. The first beam
was on at the Linac.
18
Linac and 3 GeV
Horizontal
Vertical
Particles/pulse
Final vacuum leakage test
DCCT
Linac Alignment
Acceleration
2011/12/21
302 kW @ 3NBT
Injection
Extraction
Time (ms)
Linac: Beam was ben in the middle
This will be straighten up in
the future.
3 GeV: Although magnets are
declined inward, they will
not be corrected before the
summer of 2013.
19
Neutron on the Target
After Earthquake
Before Earthquake
Old and New Targets
Unfortunately, the bubbler is no working
properly, so that the neutron beam line can
accept 100 kW at the time of first beams.
20
The first shot on target after the earthquake
Adjustment on beam positon:12/22
First shot reached on target because of
the effort on realignment of 108 magnets in 3NBT.
21
Neutrino Events
First Proton
on Target
On-site
Detector
events
22
First Beams to Hadron (1/28)
調整後、ビームは軸の中心を通った。
23
The First Beam to K1.8
ビームの信号をみる実験グループメンバー
オンラインモニタ
を見る実験者たち
Beam=BH1⊗BH2
Beam⊗TOF
Beam⊗LC⊗ACbar⊗TOF
Veto=TOF⊗AC
24
Year 2012 Plans until March
Year 2012
Jan.
Feb.
Mar.
25
JFY2012 Budget

JAEA
Oku Yen
Operational 83.50 8 cycles. JAEA direct = 5.29
Gov. Direct = 78.21 (+3.6 for cost
increase of electricity)
Equipment 14.90 14.5 for JAEA: 400 MeV Linac
0.4 for Gov. Direct.: 16 Oku total
out of 3-year funding.
Improvement
16.92 Linac + 3 GeV (final year of total
47.9)

KEK
Operational

66.18
6 cycles. The same as the last year.
CROSS
Operational 7.02
Almost the same as the last year.
26
Construction Budget
200
Oku Yen (億円)
180
160
140
Earthquake
Recovery
120
100
80
60
40
20
0 JAEA
JAEA KEK JAEA KEK JAEA KEK JAEA KEK JAEA KEK JAEA KEK JAEA KEK JAEA KEK JAEA KEK JAEA KEK JAEA KEK JAEA KEK
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
Construction
Started
Fiscal Year (予算年度)
Completion
of Phase-1
JAEA Construction
KEK Construction
JAEA After Construction
KEK After Construction
JAEA Government Direct
JAEA Government Supplemental
27
Operational Budget
JAEA Operational
JAEA Government Direct
KEK Operational
200
180
Oku Yen (億円)
160
140
6 cycles
5 cycles
6 cycles
8 cycles
120
100
80
Full Power
(9 cycles; 200 days)
JAEA Goal
KEK Goal
70% of full request
60
40
20
0 JAEA
2005
JAEA KEK JAEA KEK JAEA KEK JAEA KEK JAEA KEK JAEA KEK JAEA KEK JAEA KEK JAEA KEK JAEA KEK JAEA KEK JAEA KEK
2006
2007
2008
2009
2010
2011
2012
年次
2013
2014
2015
2016
2017
Fiscal Year (予算年度)
Completion
of Phase-1
28
99.5 % Extraction for Slow Beams
Extraction Efficiency
98.6%
Time Dependence
of Beam Loss
Adjusting
Dynamic Bump
Extraction Efficiency
99.5 %
End of Extraction
Time Dependence
of
Beam
Lossin MR
Stored
Beam
Start of Extraction
End of Extraction
Stored Beam in MR
Start of Extraction
29
We have observed
charged and neutral kaons
in the secondary beam lines
(K1.8BR, K1.8 and KL) of
Hadron Experimental Hall.
SKS
+1.8GeV/c
π+
K+
K0L→π+π-π0
K1.8
KL
K1.8BR
T1 target
30GeV proton beam
30
E03 K. Tanida
SNU
E05 T. Nagae
Kyoto U
E06 J. Imazato
KEK
K. Imai,
E07 K. Nakazawa,
H. Tamura
JAEA,
Gifu U,
Tohoku U
E08 A. Krutenkova
ITEP
E10
A. Sakaguchi,
T. Fukuda
E11 T. Kobayashi
Measurement of X rays from X- Atom
Spectroscopic Study of X-Hypernucleus, 12XBe, via the
12
C(K-, K+) Reaction
Measurement of T-violating Transverse Muon
Polarization in K+ ->π0µ+n Decays
Stage 2
K1.8
preparation
Stage 2 Day1 1 K1.8
preparation
Stage 1
K1.1BR
Systematic Study of Double Strangeness System with
an Emulsion-counter Hybrid Method
Stage 2
K1.8
Pion double charge exchange on oxygen at J-PARC
Stage 1
K1.8
Stage 2
K1.8
Stage 2
neutrino data taking
Osaka U,
Production of Nuetron-Rich Λ-Hypernuclei with the
Osaka EC U Double Charge-Exchange Reactions
Tokai-to-Kamioka (T2K) Long Baseline Neutrino
KEK
Oscillation Experimental Proposal
preparation
preparation
E13 T. Tamura
Tohoku U
Gamma-ray spectroscopy of light hypernuclei
Stage 2 Day1 2 K1.8
preparation
E14 T. Yamanaka
Osaka U
Proposal for KL -> p0 n n-bar Experiment at J-PARC
Stage 2
KL
beamline
tuning
RIKEN,
Kyoto U
A Search for deeply-bound kaonic nuclear states by inflight 3He(K-, n) reaction
Electron pair spectrometer at the J-PARC 50-GeV PS
to explore the chiral symmetry in QCD
Stage 2 Day1
K1.8BR
preparation
Stage 1
high p
Stage 2 Day1
K1.8BR
beamline
tuning
Stage 2
K1.8
preparation
Stage 2 Day1
K1.8
data taking
Stage 1
new
beamline
E15
M. Iwasaki,
T. Nagae
E16 S. Yokkaichi
RIKEN
R. Hayano,
H. Outa
H. Bhang,
E18 H. Outa,
H. Park
U Tokyo,
RIKEN
E19 M. Naruki
KEK
E21 Y. Kuno
Osaka U
E17
Precision spectroscopy of Kaonic 3He 3d->2p X-rays
SNU, RIKEN,Coincidence Measurement of the Weak Decay of 12LC
KRISS
and the three-body weak interaction process
High-resolution Search for Q+ Pentaquark in p-p -> K-X
Reactions
An Experimental Search for Lepton Flavor Violating
µ−−e− Conversion at Sensitivity of 10−16 with a SlowExtracted Bunched Proton Beam
31
E22
S. Ajimura,
A. Sakaguchi
Osaka U
E26 K. Ozawa
KEK
E27 T. Nagae
Kyoto U
P28 H. Fujioka
Kyoto U
E29 H. Ohnishi
RKEN
N. Saito,
M. Iwasaki
RCNP,
Osaka U
KEK,
RIKEN
P36 S. Shimizu
Osaka U
E40 K. Miwa
Tohoku U
T25 S. Mihara
KEK
E31 H. Noumi
P34
T32 A. Rubba
P35 T. Kajita
Exclusive Study on the Lambda-N Weak Interaction in
Stage 1
A=4 Lambda-Hypernuclei (Revised from Initial P10)
Search for ω-meson nuclear bound states in the π-+AZ
-> n+(A-1)(Z-1) ω reaction, and for ω mass modification Stage 1
in the in-medium ω->π0γ decay.
Search for a nuclear Kbar bound state K-pp in the d(π+,
Stage 2
K+) reaction
approved
Study of isospin dependence of kaon-nucleus
as apart of
interaction by in-flight 3He(K- ,n/p) reactions
E15
Search for φ-meson nuclear bound states in the pbar +
Stage 1
Z -> φ + φ(Z-1) reaction
Spectroscopic study of hyperon resonances below KN
Stage 1
threshold via the (K- ,n) reaction on Deuteron
A New Measurement of the Muon Anomalous Magnetic
Stage 1
Moment g-2 and Electric Dipole Moment at J-PARC
Measurement of G(K+ -> e+n)/G(K+ -> m+n) and Search
for heavy sterile neutrinos using the TREK detector
Stage 1
system
Measurement of the cross sections of Σp scatterings
Stage 1
Extinction Measurement of J-PARC Proton Beam at
Test
K1.8BR
experiment
Towards a Long Baseline Neutrino and Nucleon Decay
Experiment with a next-generation 100 kton Liquid
Test
ETH, Zurich
Argon TPC detector at Okinoshima and an intensity
experiment
upgraded J-PARC Neutrino beam
to be
A test experiment to measure sub-GeV flux in the onICRR, Tokyo
decided by
axis direction at the J-PARC neutrino beam
E11 & Lab
Test
K1.8
K1.8
K1.8
preparation
K1.8BR
K1.1
K1.8BR
MLF
K1.1BR
K1.8
K1.1BR data taking
K1.1BR data taking
neutrino
32
axis direction at the J-PARC neutrino beam
T37 K. Inami
Nagoya U
T38 T. Nanjo
Kyoto U
P39 K. Sakashita
KEK
T43 K. Aoki
RIKEN
Test of TOP counter for B-factory upgrade
Proposal for Measuring Hadron Response at K1.1BR
for KOTO Experiment
A study of water Cherenkov detector for counting the
number of neutrino at Near detector hall of J-PARC
neutrino beam-line
E11 & Lab
Test
experiment
Test
experiment
to be
decided by
E11 & Lab
Test of Hadron Blind Detector and GEM Tracker for the
Test
J-PARC E16 Experiment
experiment
K1.1BR withdrawn
K1.1BR completed
neutrino
K1.1BR
33
Hypernucleus
Small (l・s) Force)
Shallow Potential
50 MeV
d
p
s
Ｎ
Λ
Difference?
Difference?
p1/2 p 3/2
s1/2
p 30 MeV
s
Λ
mL
Deep potential + Heavier mass ?
mL
(l・s)surface > (l・s)interior
Spin
down
particle
Vl･s
r
rnucleus
rnucleus
Analyze Hypernuclear Spectroscoy with
mL(r), Vl･s(r) as two parameters！
Spin
down
particle
r
34
5H
glue-like
role of
L-hyperon
n
unbound n p
exotic nucleus n n
6
LH
p
n L n bound exotic
n n hypernucleus
insight into halo nuclear structure through hypernuclei
ordinary nuclei L-hypernuclei
DN
SN
S
77MeV
290MeV
LN
smaller DM
larger mixing
NN
S=0
S=-1
L
N
S
N L N
contribution of S component
and many body effect
J. Schaffner-Bielich, Nucl. Phys.
A804 (2008) 309
n-rich hypernucleus is
a doorway to n-star
35
Necessity for Hadron Hall extension
 Too small area ⇔ KEK-PS x2.4, BNL-AGS x4.1
 Only 4 beam lines ⇔ KEK-PS ~7 lines, BNL-AGS ~15 lines
-> Ineffective operation (“output per operation cost” is bad.)
Long waiting queue of approved experiments
(At K1.8/K1.8BR lines, 6960 hours = more than 6 years）
-> Discourage users in the world. Predominance will be lost.
Extremely urgent !
First priority in nuclear physics
community in Japan
BNL-AGS
J-PARC
primary lines
secondary lines
RIKEN is considering its funding!
36
Thanks
37