visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
장소 E6-2, 5th fl. #5318 
일시 2015/10/16, 3PM 
연사 Dr. Pierre Pugnat , (CNRS-LNCMI) 

High Magnetic Fields to Probe the sub-eV range of Particle/Astroparticle Physics - From the OSQAR experiments at CERN up to new perspectives at LNCMI-Grenoble

2015/10/16(Fri) 3PM, E6-2, (RM)#5318
Dr. Pierre Pugnat , CNRS-
LNCMI  

This seminar will be split in 2 parts. In the first one, the different set-ups, overall results and near future plans of the OSQAR experiments at CERN will be presented after a short reminder highlighting the scientific interests 

of exploring the low, i.e. sub-eV, energy frontier of particle physics. 

In the beginning, OSQAR mostly aimed at measuring the Vacuum Magnetic Birefringence (VMB), which was first predicted by Euler, Heisenberg and Weisskopf in 1936 

and later formally confirmed by Quantum Electrodynamics. 
First steps in the development of a high sensitive ellipsometer for OSQAR-VMB will be briefly presented together with results obtained in measuring the Cotton-Mouton effect 

in Nitrogen gas as a function of pressure. 

The second objective of OSQAR is to search for axions and Axion-Like Particles (ALPS) of sub-eV energy from a "Light Shining through a Wall(LWS)" experiment. 
Similarly to the Primakov process of production of neutral mesons by high-energy photons in a strong electrical field, sub-eV ALPs can be produced from optical photons propagating in a strong magnetic field. 

Owing to their strongly reduced interaction with standard model particles,axions and ALPs can cross an optical barrier beyond which they may be regenerated into detectable photons by the inverse Primakov process. 

As dark matter candidates, interest in axions and ALPs goes beyond particle physics and intersects with cosmology. Last results from the OSQAR-LSW experiment will be presented.
They provide today the most stringent constraint on the di-photon coupling ever achieved in laser-based experiment[i]. 
The third objective of OSQAR is to look for the chameleon particle, from the search of a magnetic afterglow effect due to the possible coupling of chameleons to photons. 

This particle, with an environmentdependent mass, was proposed as a quintessence candidate of dark energy. 

An addendum to the OSQAR proposal has been issued beginning of 2015 to include the CHameleon Afterglow SearchExperimental scheme (CHASE) following the pioneering work of the GammeV collaboration. 
OSQAR-CHASE has been approved by the CERN-SPSC scientific committee. It will be presented highlighting its potential to improve the present exclusion limits constraining chameleon particles[ii]. 
The second part of this seminar will be devoted to ongoing high-field magnet developments at the Grenoble High Magnetic Field Laboratory (LNCMI-Grenoble) of CNRS. 
In particular, the large hybrid magnet user platform under construction[iii] will be presented highlighting its potential 
for the development of new microwave LSW or/and ADMX type experiments based on the large bore superconducting magnet, which will produced 9 T in a 800 mm diameter. 
This second part will provide the context for a possible promising collaboration between IBS-CAPP and CNRS-LNCMI and is expected to trigger fruitful discussions.

[i] R. Ballou, P. Pugnat, et al. (OSQAR collaboration), New Exclusion Limits for the Search of Scalar and Pseudoscalar Axion-Like Particles fromLight Shining Through a Wallaccepted for publication in Phys. Rev. D, http://arxiv.org/abs/1506.08082
[ii] http://cds.cern.ch/record/2001850/files/SPSC-P-331-ADD-1.pdf
[iii] P. Pugnat, et al., Progress Report on the 43 T Hybrid Magnet of the LNCMI-GrenobleIEEE Trans. on Appl. Supercond. 24, 4301305 (2014)

 

Contact: CAPP Administraion Office(350-8166) 

번호 일시 장소 연사 제목
공지 2019/09/18 - 12/5  Seminar Room #1323  Prof. David Schuster and etc.  Fall 2019: Physics Seminar Serises
공지 2019/09/02 - 12/09  Seminar Room 1501  이호성 박사 (한국표준과학연구원) and etc.  Fall 2019: Physics Colloquium
50 October 22 (Tue.), 4:00pm  #1323 (E6-2, 1st fl.)  Prof. Sunghoon Jung  Exploring the Universe beyond horizon file
49 Nov. 22th (Thur), 15:00  E6 Room(#1323)  Prof. Suprijadi Haryono  Experimental and Computational Study on Physical Properties based on Granular System file
48 May 311 (Thu.), 04:00 PM  #1323, E6-2  Prof. Teun-Teun Kim  Dynamic control of optical properties with gated-graphene metamaterials file
47 April 5th 2017, 12:00 ~ 13:00  Room 101, Creative Learning Bldg.(E11)  Prof. Wonho Choe(Dept. of Physics),Prof. Young-chul GHIM(Dept. of Nuclear & Quantum Engineering)  2017년 4월 첫수 융합포럼 개최 안내(물리학과 & 원자력 및 양자공학과 공동 개최)/The First Wednesday Multidisciplinary Forum in April 2017 organized by Dept. of Physics & Dept. of Nuclear & Quantum Engineering file
46 Nov. 8 (Wed.), 1:00 PM  #5318 (E6-2. 5th fl.)  Prof. Y. Matsuda Department of Physics, Kyoto University  “Emergent exotic quasiparticles in quantum spin liquids” file
45 Sep. 12 (Tue.), 4 PM  #1323 (E6-2. 1st fl.)  Prof. Yi. Zhou (The Zhejiang Univ.)  Exact Solution for the Interacting Kitaev Chain at Symmetric Point file
44 Sep. 13 (Wed.), 4 PM  #1323 (E6-2. 1st fl.)  Prof. Yi. Zhou (The Zhejiang Univ.)  An Introduction to Quantum Spin Liquids file
43 May. 17 (Thu.), 01:30 PM  E6-2. 1st fl. #1323  Prof. Yong-Baek Kim University of Toronto  Quantum Spin Liquid in Kitaev Materials file
42 2015/10/23-12/4 10:30 AM  E6, #1501  Prof. YongKeun Park & Prof. Tae-Young Yoon  How to write a good scientific paper[Open lecture series]
41 April 6, 2017 (Thu), 4:00 pm  IBS CAPP seminar room, Creation Hall (3F), KAIST Munji Campus  Prof. Youngjoon Kwon (Yonsei University)  For whom the Belle tolls
40 Nov. 1 (Tue.) 2:30 pm  Seminar Room #1323(E6-2)  Prof. Youngjoon Kwon, Yonsei Univ.  Search for dark sector particles in the B-factory experiments
39 2015/10/16, 4PM  E6-2. 2nd fl. #2501  Prof. Yung-Fu Chen(Solid-state Laser Physics Laboratory,National Central University)  Fluctuations of entropy production in partially masked electric circuits
38 July 25(Thur.),4:00PM  E6-2, #1323  Prof.Bohm-Jung Yang  Band topology of twisted bilayer graphene file
37 September 18(Wed.), 16:00PM  #1323, E6-2  Prof.David Schuster  Exploring Synthetic Quantum Matter in Superconducting Circuits file
36 Apr. 27, 2017 (Thu) 4:00 pm  Seminar Room(#1323, E6-2)  Prof.Donghan Lee (Chungnam National Univ.)  반도체 양자점을 이용한 단광자 광원
35 Nov. 28 (Tue.), 4:00 PM  #1323 (E6-2. 1st fl.)  Samindranath Mitra, Editor at Physical Review Letters  Physics after the lab and the desk: Your work in PRL file
34 2015/07/16-07/17  E6-2, 1501  Sang-Wook Cheong (Rutgers Univ.)  KAIST Physics Distinguished Lecture
33 2016/09/29-12/13  E6-2, #1323  Sangyoon Han 외  2016 Fall, Physics Seminar Serises file
32 July 8(Mon), 14:00  E6, #1322  T. L. M. Guedes (Univ. of Konstanz)  Ultrabroadband squeezed pulses and their relation to relativity file
31 DEC. 26 (Wed), 04:00 PM  E6-1. 3rd fl. #3434  Y. Kim, A. Go, K. Hwang and E.-G. Moon  Informal Workshop on Topology and Correlation file