volume . 007

Greetings from the new director, Hideto En’yo, of Nishina Center
Dear all the friends of RI-Beam
Factory of RIKEN Nishina Center,October 2009

make a full use of RIBF to produce world-leading results.

On October 1st 2009, RIKEN
President, Ryoji Noyori, appointed
me as the Director of RIKEN
Nishina Center for AcceleratorBased Science. The first Director,
Yasushige Yano, has contributed
in completing the most powerfulheavy ion accelerator in history. The
next mission, taken on by myself
and by all the users of RIBF, is toWith this new facility, there open huge science opportunities, not only in nuclear physics but also
in its applications to many fields. Nishina Center would like to welcome everybody in the world tothis new field of dream born in Wako-city, Japan.
We are remodeling our facilities to be more user-friendly, ensuring easy access to the world-wideuser community. We appreciate and welcome all kinds of participations in RIBF, whether be it
joining in an existing experiment, writing a proposal, or even constructing your own equipmentsof large scale.
Though it has been only three years since Nishina Center was established, we have almost 80years of history since Yoshio Nishina founded his laboratory in RIKEN in 1931. Naming ourCenter after Nishina has a very significant meaning, and we aim to live up to this great scientist’ s
name. We will appreciate your continued support and encouragement in the future.
Hideto En'yoDirector
RIKEN Nishina Center for Accelerator-Based Science

Person of Cultural Merit for the year 2009
It is our great pleasure to announce that Professor
Toshimitsu Yamazaki (Research Consultant of Advanced
Meson Science Laboratory, Professor Emeritus of theUniversity of Tokyo) was named a Person of Cultural
Merit for the year 2009.
P r o f . Ya m a z a k i h a scont inuously played aleading role in Japan's
nuclear physics research,and explored a new academic field in our nation's nuclear physics.

Nishina Center
http://www.nishina.riken.jp/
PAC related
http://www.nishina.riken.jp/UsersGuide/
RIBF User Group
http://ribfwww.riken.go.jp/exp/RIBF_uec_eng/
Beam Time Schedule
http://www.nishina.riken.jp/rarfmt/pc.html
Seminar information
http://rarfaxp.riken.jp/~seminar

Nishina Center for Accelerator-Based Science.

Prof. Yamazaki was also awarded various awards including theNishina Memorial Award.

.1.

Toshimi Suda
User Support and Liaison Office
UserSupportOffice@ribf.riken.jp

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Present status, operation schedules of RIBF
The new RILAC (RILAC 2)

volume . 007
October 2009

AUTUMN

Fabrication of the new RILAC (RILAC 2) is ongoing, and its installation at the AVF hall will startin January. The commissioning will take place inthe next autum, which follows the installation ofthe new 28-GHz ECR ion source in summer.

BigRIPSA pillow seal system having a remotely
releasable mechanism to facilitate maintenanceunder high radiation condition, have beensuccessfully installed.
Additional shieldings
have been mounted in a newly constructed target
chamber and at the downstream of the beam
dump. This effort aims particularly at reducing
heat loads and radiation damages of the air-coresuperconducting quadrupole magnets placed justdownstream of the target chamber. Now we areready to conduct a series of experiments withintense primary beam, such as 48Ca beam of a few
100 pnA, starting from the end of October.
We have also started to construct a shielding
wall between the ZeroDegree spectrometer and thearea for SAMURAI spectrometer, which enables
us to continue the construction of the spectrometer
independently from beam time schedule ofBigRIPS/ZeroDegree. The construction of thewall will be completed by January next year.

Other constructions-GARIS II
Installation of a new gas-filled separator,
GARIS-II (QDQQD), dedicated to chemicaland spectroscopic-studies of SHEs producedby ‘hot fusion’ reaction is in the final stage. All
magnets are placed at their position, and related
consturction is underway. The commissioning will
start from March, 2010.
-SCRITAn electron ring including a 150 MeV injector
microtron is under installation at the RIBF B1Ffloor. The microtron and magnets of the ring are
now placed in their position, and infrastructure iscurrently being installed simultaneously. The firststorage of electron beam will be accomplished innext March.

Operation Schedule
The beam time schedule for the latter half of
this year has been fixed and is available in thefollowing web page:
http://www.nishina.riken.jp/rarefmt/pc.html
A series of BigRIPS experiments usingZeroDegree and SHARAQ is now being conductedstarting from the end of October for about twomonths. Currently, a SHARAQ experiment isrunning using an intense primary beam of 4He.
The intensity reached nearly 1pμA, which is thehighest ever provided at RIBF.
As indicated in the beam time schedule,
experiments using U beam with greatly improved
intensity, ~ a few pnA expected, and intense 48Ca
beam, ~ 200 pnA, will follow from mid-November.
No experiments with AVF is planned during
the period from mid-December to the end of next
March, 2010 due to a long construction period at
the AVF hall related to the RILAC 2 installation.

Announcement
Beam time requestes

PAC

The beam time requests for the first half of thefiscal year 2010, April to October, will be called
for in December. All the spokesperson of the PAC
approved experiments will soon be contacted.

The 5th Material and Life Science PAC (MLPAC) was held on Sep. 3-4. In total, 20 proposals
for experiments at RAL and RIBF were reviewed.
The next ML PAC will be held next spring.
The 6th Nuclear Physics PAC (NP-PAC)
meeting will be held on Dec. 3-4. In total, 13
proposals submitted will be reviewed by the NP
PAC members. The meeting program will soon beavailable at:
http://www.nishina.riken.jp/UsersGuide/NP-PAC.

Nishina Center
http://www.nishina.riken.jp/
PAC related
http://www.nishina.riken.jp/UsersGuide/
RIBF User Group
http://ribfwww.riken.go.jp/exp/RIBF_uec_eng/
Beam Time Schedule
http://www.nishina.riken.jp/rarfmt/pc.html
Seminar information
http://rarfaxp.riken.jp/~seminar

Nishina Center for Accelerator-Based Science.

.2.

Toshimi Suda
User Support and Liaison OfficeUserSupportOffice@ribf.riken.jp

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User Group Activities
Greetings from the new UEC chair

volume . 007
October 2009

AUTUMN

Dear RIBF Users,
The new term of RIBF User executive committee has started on October 1, 2009. T. Teranishi,
T. Kawabata, H. Sakuragi (elected members), D. Beaumel, and T. Sumikama (supplementarymembers) joined us as new members. We assure you that we will do our best to establish a soundpartnership between RIBF users and the RIKEN Nishina center.
We will always be open to the feedback from RIBF users. Please send your comments, suggestions,and claims to ribf-uec@ribf.riken.jp.
Tomohiro Uesaka
chairman of the RIBF-UEC

UEC election

RIBF-FRIB user meetings at Hawaii

Election of the RIBF Users Executive Committee(UEC) members was held from Aug. 25 to Sep.
18, 2009. There were over 100 votes cast for thiselection.
Three of nine members were newly elected: T.
Teranishi (Kyuushuu Univ.), T. Kawabata (KyotoUniv.) and H. Sakuragi (Osaka City Univ.). Theirterm of office is three years. The chair and vicechair of the RIBF UEC are T. Uesaka (CNS, Univ.
of Tokyo) and T. Teranishi. For further details,
please refer,
http://ribfwww.riken.jp/exp/RIBF_uec_eng/
UECmember/Election2009/Results090924.html

The RIBF user town meeting was held on Oct.
15 during the 3rd Joint Meeting of the Nuclear
Physics Division of the Physical Society of Japan(JPS) and American Physical Society (APS) heldat Hawaii’s Big Island. Starting from the opening
remarks by the new RNC director, H. En’yo,
current status and future perspectives of RI Beam
Factory were discussed. Immediately after theRIBF meeting, a user meeting of FRIB, Facilityfor Rare Isotope Beams, followed. There weremore than 60 participants in the series of RIBF
and FRIB meetings.

Research Topics
Editor’s Suggestions
The article by Gentaro Watanabe (NuclearTheory Group) et al. which appeared in Phys. Rev.
Lett. was selected as one of ‘Editor’s Suggestions’.
Title : Formation of Nuclear “Pasta” in Supernovae
Phys. Rev. Lett. 103 (2009)121101.

Mirror Symmetry in the magicity loss (D.
Suzuki et al. )Phys. Rev. Lett. 103(2009)152503
The breakdown of the magic number Z=8 in
the proton rich nucleus, 12O, was discovered.

This is the first demonstration of the persistenceof mirror symmetry in the disappearance of themagic number. The mirror partner of 12O is 12Be,
in which the magic number N=8 is known to belost. This experiment was performed at GANIL
using MUST2 telescope.

Young Scientist Award
Yusuke Kazama (Radiation Biology Team) wasawarded the Young Scientist Award for Plant
Science for the following article:“Sex chromosomes and sex expression i thedioecious plan Silene latifolia”

Nishina Center
http://www.nishina.riken.jp/
PAC related
http://www.nishina.riken.jp/UsersGuide/
RIBF User Group
http://ribfwww.riken.go.jp/exp/RIBF_uec_eng/
Beam Time Schedule
http://www.nishina.riken.jp/rarfmt/pc.html
Seminar information
http://rarfaxp.riken.jp/~seminar

Nishina Center for Accelerator-Based Science.

.3.

Toshimi Suda
User Support and Liaison Office
UserSupportOffice@ribf.riken.jp

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The 2nd “Nishina School”

volume . 007
October 2009

AUTUMNOne intern from Canada, andseven outstanding undergraduate
seniors of Peking University led by
Prof. F. Xu, visited Nishina Centerto join the second “Nishina School”
held from Sep. 29 to Oct. 8. They
enjoyed classes including lecturesand laboratory training as part ofthe school. The photo was taken at
the opening ceremony of the school
held on Sep. 29.

Nishina Center
http://www.nishina.riken.jp/
PAC related
http://www.nishina.riken.jp/UsersGuide/
RIBF User Group
http://ribfwww.riken.go.jp/exp/RIBF_uec_eng/
Beam Time Schedule
http://www.nishina.riken.jp/rarfmt/pc.html
Seminar information
http://rarfaxp.riken.jp/~seminar

Nishina Center for Accelerator-Based Science.

.4.

Toshimi Suda
User Support and Liaison Office
UserSupportOffice@ribf.riken.jp

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