nuclear & particle physics at seoul national universitymotobaya/nishina_school/snu.pdf•...

Seoul National University

Nuclear & Particle Physics at Seoul National University

Seonho Choi (崔善浩)Nishina School 2016

Nishina School 2016


Seoul�� National�� University��

Short�� Introduction



• One of the best universities in Korea

• One of Top 10 Universities of Asia(QS rankings)

• Founded in 1946 as the first national university in Korea

• 16 colleges, 1 graduate school and 9 professional schools

• about 2,500 full-time faculty members

• ~16,700 undergraduate students and ~11,300 graduate students



Airport SNU


If you visit SNU


Main Gate


국립 서울 대학교國立ソウル大學校國立首尔大學校


Main Gate



• 16 Colleges with 84 Departments for Undegraduates

• Humanities, Social Sciences, Natural Sciences (Department of Physics & Astronomy), Agriculture and Life Sciences, Business Administration, Education, Engineering, Fine Arts, Human Ecology, Liberal Studies, Law, Medicine, Music, Nursing, Pharmacy, Veterinary Medicine


International Students

• Undergraduate Students 1,029 (out of ~16,700)

• Master’s Program ~1,100 (out of ~8,000)

• PhD Program ~760 (out of ~3,300)


Department ofPhysics & Astronomy

• Started as Department of Physics in 1946 under the College of Humanities

• 39 Faculty members

• ~50 Researchers

• ~250 Undergraduate students

• ~150 Graduate students


Research Fields

AreaNumber�� of��

faculty�� members

Elementary�� Particle�� Physics 7

Nuclear�� Physics 1

Condensed�� Matter�� Physics(Theory),�� Statistical�� and�� Computational�� Physics

7

Condensed�� Matter�� Physics�� (Experiment) 17

Atomic/Molecular/Optics 4

Plasma�� and�� Biophysics 3


High Energy Physicsat SNU

• Particle Physics Theory: 4 faculty members

• Particle Physics Experiment: 3 faculty members

• Nuclear Physics Experiment: 1 faculty members


RIBF(RIKEN)Nucleosynthesis àOrigin of elements

KEK, JPARCRole of strangeness in nucleus àDense astronomical matter

Jlab/RHICStructure of protons, nuclei àNature of strong interactions

Belle(KEK)BESIII(IHEP)

Matter Antimatter asymmetry àOrigin of matter dominance Properties of heavy quarks & leptons àPhysics beyond the SM

AMORE(Y2L)

Double Beta decay search àProperties of neutrinosSUSY

Dark matter search àOrigin of universe

KIMS(Y2L)

From Quarks to Cosmos


Nuclear Physics at SNU


Research Topics

• Strangeness (J-PARC, KEK)

• RI (RIKEN, GANIL)

• Hadron (JLab)

• Muon g-2/EDM (J-PARC)


KEK/J-PARC Experiments

• Singles: E307(p), E369(n)

• Coincidence: E462(He), E508(C)

• Γn/Γp puzzle finally resolved

• Hint of 3-body process observed

• J-PARC E18 proposed


Meson Induced Drell-Yan

• Probes quark distribution function of mesons using protons and/or neutrons

• Previous experiments with pion beams at CERN, Fermi Lab.

• New opportunities with kaon beams at J-PARC

• High energy meson beams at 10 GeV produced by the primary proton beam

• Various targets: Hydrogen, deuteron and solid targets


Research Subjects with RI Beams

• Limits of nuclear stability

• Properties and reactions of exotic nuclei

• Nuclear astrophysics

• Studies of fundamental interactions

• Applications


SNU Activities at RIBF

• SAMURAI Collaboration

• EURICA Collaboration

• CNS/CRIB

• In the future

• BRIKEN, KISS

8

Hadron Physics at Jefferson Lab• Study of quarks inside the nucleons• Scattering of electrons off protons and neutrons• Polarized beam and targets sensitive to quark spin

direction• Resolution of the spin puzzle

Nuclear Physics at Jefferson Lab• Electromagnetic form factors of nucleons• Property of nucleons inside the nucleus– Coulomb Sum Rule• Nucleon-nucleon correlation in the nucleus

• Experiments as a spokesperson- E05110 (Coulomb Sum Rule), - E07003 (proton spin structure)- E06014 (neutron spin structure)

• Other experiments- E03006 (proton spin structure) : One student working on the analysis

Structure of proton and nucleusat Jefferson Lab

8


Organization

• Institute for Nuclear and Particle Physics (INPA)

• Superstructure for

• Nuclear Physics

• Particle Physics

• Astrophysics


核粒子天体物理硏究所

Institute of Basic Science (IBS)Research Area of IBS

§ At present, only minimal office space is available.

§ New Buildings will be constructed in couple of years.

§ $10M/year for 10 years for each research center.


RI Science Project (former KoRIA)

Slides are borrowed from the Director, Dr. Sunchan Jeong


Seoul

RISP

RIKEN

Location

Science�� Business�� Belt

Accelerator�� complex

Institute�� for�� Basic�� Science

RAON�� RI�� Accelerator�� in�� Korea

Layout�� of�� RAON

80m

IF system

128.5m

70m

Low Energy Experiments Nuclear Astrophysics Material Science β-NMR

Driver Linac

LEBT

ECR-IS (10keV/u, 12 pµA)

RFQ (300keV/u, 9.5 pµA)MEBT

SCL1 (18.5 MeV/u, 9.5 pµA)

100m

20m

Chg. Stripper SCL2 (200 MeV/u, 8.3 pµA for U+79) (600MeV, 660 µA for p)

Post AcceleratorCB : Charge Breeder HRMS : High Resolution Mass Separator

100m

250m

20m

SCL3

375m

MEBT

100m

ECR-IS

Cyclotron (p, 70 MeV, 1mA)

ISOL systemAtom/Ion Trap

Gas Catcher

High Energy Experiments Nuclear Structure/ Symmetry Energy

110m

RF Cooler

RFQ CB HRMS

ISOL Target

µSR, Medical

IF Target

IF Separator

❑ High intensity RI beams by ISOL & IF

ISOL : direct fission of 238U by 70MeV proton IF by 200MeV/u, 8.3pμA 238U

❑ High quality neutron-rich RI beams 132Sn with up to ~250MeV/u, up to ~108 pps

❑ More exotic RI beams by ISOL+IF


Summary

• SNU Nuclear Physics Group

• Active in various top research areas

• Leading role as spokespersons

• Quantum leap expected with CUP & RISP


Thank you감사합니다

ありがとうございます谢谢

nuclear & particle physics at seoul national universitymotobaya/nishina_school/snu.pdf•...

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