An experimental limit on neutron mirror-neutron oscillation Ulrich Schmidt Physikalisches Institut, Universität Heidelberg, Germany.

Slides:

Advertisements

Similar presentations

TIME 2005: TPC for the ILC 6 th Oct 2005 Matthias Enno Janssen, DESY 1 A Time Projection Chamber for the International Linear Collider R&D Studies Matthias.

Advertisements

Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation,

Geiger-Muller detector and Ionization chamber

JYFLTRAP: Spectroscopy with multi-trap facility Facility Mass purified beams In-trap spectroscopy Future plans.

GEM Detector Shoji Uno KEK. 2 Wire Chamber Detector for charged tracks Popular detector in the particle physics, like a Belle-CDC Simple structure using.

Assisi – 23 June 2005 Tito Bellunato 1 Status of the LHCb RICH detector and the HPD Beauty 2005 Assisi – 23 June 2005 Tito Bellunato – Università degli.

Ionization. Measuring Ions A beam of charged particles will ionize gas. –Particle energy E –Chamber area A An applied field will cause ions and electrons.

Luminosity Monitors MICE Video Conference 7 May 2009 Paul Soler.

Performances of a pixel ionization chamber to monitor a voxel scan hadron beam A.Boriano 3, F.Bourhaleb 2,3, R. Cirio 3, M. Donetti 2,3, F. Marchetto 3,

Test of Silicon Photomultipliers (SiPM) at Liquid Nitrogen Temperature Yura Efremenko, Vince Cianciolo nEDM CalTech Meeting 02/14/2007.

Mass Spectrometry Brief introduction (part1) I. Sivacekflerovlab.jinr.ru 2012 Student Practice in JINR Fields of Research 1.oct.2012.

Position-sensitive detectors of thermal neutrons: types, characteristics, applications. A.V. Churakov IX International school-seminar: Actual problems.

GEM 中子束监测器的研制进展周健荣, 孙志嘉中国科学院 “ 核探测技术与核电子学 ” 重点实验室中国科学院高能物理研究所, CSNS 探测器组 2010 年 8 月 17 日

IHEP, Bejing 9th ACFA ILC Physics and Detector Workshop & ILC GDE Meeting The preliminary results of MPGD-based TPC performance at KEK beam.

Tools for Nuclear & Particle Physics Experimental Background.

NEW COMMENTS TO ILC BEAM ENERGY MEASUREMENTS BASED ON SYNCHROTRON RADIATION FROM MAGNETIC SPECTROMETER E.Syresin, B. Zalikhanov-DLNP, JINR R. Makarov-MSU.

Fabio Sauli-CERN 1 IEEE-NSS Rome 04 F. Sauli, T. Meinschad, L. Musa, L. Ropelewski CERN, GENEVA, SWITZERLAND PHOTON DETECTION AND LOCALIZATION WITH THE.

Interactions of Neutrons

Laser Stripping and H 0 monitor systems 10/18/2011B.Cheymol, E. Bravin, U. Raich, F. Roncarolo BE/BI1.

Neutron Structure Functions and a Radial Time Projection Chamber The Structure of the Neutron The BoNuS Experiment at CLAS A New Proton Recoil Detector.

Development of Tracking Detector with GEM Kunihiro Fujita RCNP, Osaka Univ. Yasuhiro Sakemi CYRIC, Tohoku Univ. Masaharu Nomachi Dep. of Phys., Osaka Univ.

Motivation Polarized 3 He gas target Solenoid design and test 3 He feasibility test Summary and outlook Johannes Gutenberg-Universit ä t Mainz Institut.

D. Attié CEA Saclay/Irfu RD51 – ALICE Workshop June 18 th, 2014 ILC-TPC Micromegas: Ion Backflow Measurements.

GEM: A new concept for electron amplification in gas detectors Contents 1.Introduction 2.Two-step amplification: MWPC combined with GEM 3.Measurement of.

Performance limits of a 55  m pixel CdTe detector G.Pellegrini, M. Lozano, R. Martinez, M. Ullan Centro Nacional de Microelectronica, Barcelona, 08193,

PSD 7 September 2005 Developments and Applications of Gas Based Neutron Detectors Introduction Neutron Detector Characteristics Gaseous Detectors currently.

Yosuke Watanabe….. University of Tokyo, RIKEN A, KEK C, Development of a GEM tracker for E16 J-PARC 1 Thanks to ???????????

For all CHEM5161 students: The first day of class for CHEM5161 (Analytical Spectroscopy) will be on TUE Sept 4 (following Labor Day). There will be no.

TPC R&D status in Japan T. Isobe, H. Hamagaki, K. Ozawa, and M. Inuzuka Center for Nuclear Study, University of Tokyo Contents 1.Development of a prototype.

Alpha and Beta Interactions

A gas scintillation proportional counter for thermal neutron scattering measurements D.Raspino, N.J.Rhodes, E.M.Schooneveld (ISIS-STFC), I.Defendi, M.Jurkovic,

1 Development of Multi-Pixel Photon Counters (1) S.Gomi, T.Nakaya, M.Yokoyama, M.Taguchi, (Kyoto University) T.Nakadaira, K.Yoshimura, (KEK) Oct

Experimental and Numerical studies on Bulk Micromegas SINP group in RD51 Applied Nuclear Physics Division Saha Institute of Nuclear Physics Kolkata, West.

WP4 Neutronic Technological Innovation Task 4.2 Neutron Detectors – The Intensity Frontier Francesco Piscitelli on behalf of the ESS detector group, Wigner.

Tests of AWAKE spectrometer screen and camera at PHIN Introduction Layout Procedure Setup, results (runs 1 – 5) Conclusions L. Deacon, S. Mazzoni, B. Biskup.

Preliminary results of a detailed study on the discharge probability for a triple-GEM detector at PSI G. Bencivenni, A. Cardini, P. de Simone, F. Murtas.

GEM basic test and R&D plan Takuya Yamamoto （ Saga Univ. ）

Institute of Experimental and Applied Physics Czech Technical University in Prague IEAP – CTU Prague 1 Current status and future development of neutron.

Design and performance of Active Target GEM-TPC R. Akimoto, S. Ota, S, Michimasa, T. Gunji, H. Yamaguchi, T. hashimoto, H. Tokieda, T. Tsuji, K. Kawase,

Future Possibilities for Measuring Low Mass Lepton Pairs in Christine Aidala for the Collaboration Quark Matter 2002, Nantes.

METAL DETECTORS: PERFORMANCES AND APPLICATIONS Oleksandr Okhrimenko Institute for Nuclear Research NAS of Ukraine, Kiev.

Luminosity Monitor Design MICE Collaboration Meeting 31 May 2009 Paul Soler.

On behalf of the LCTPC collaboration VCI13, February 12th, 2013 Large Prototype TPC using Micro-Pattern Gaseous Detectors  David Attié 

MPI Semiconductor Laboratory, The XEUS Instrument Working Group, PNSensor The X-ray Evolving-Universe Spectroscopy (XEUS) mission is under study by the.

PSA: ADAPTIVE GRID SEARCH The Method Experimental Results Optimization aspects Roberto Venturelli (INFN Padova - IPSIA “Giorgi” Verona) SACLAY, 05-may-06.

May 26-27, 2005Tadashi Nomura (Kyoto U), KRare05 at Frascati, Italy1 KOPIO Beam Catcher Tadashi Nomura (Kyoto U.) Contents –What is Beam Catcher? –Concept.

16 Sept PSD 7 Liverpool 1 MHSP with position detection capability MHSP with position detection capability H. Natal da Luz a,b, J.F.C.A. Veloso a,b,

Development of a Single Ion Detector for Radiation Track Structure Studies F. Vasi, M. Casiraghi, R. Schulte, V. Bashkirov.

ESS | Non-Invasive Beam Profile Measurements| | C. Böhme Non-Invasive Beam Profile Measurement Overview of evaluated methods.

I. Stefanescu 1,2, K. Zeitelhack 2, R. Hall-Wilton 1, C. Höglund 1,3, I. Defendi 2, M. Zee 2, L. Hultman 3, J. Birch 3, R. Schneider 4 1 European Spallation.

Status report FRM2 In-Kind Contribution: a 10 B-based gas detector with macrostructured multilayers Irina Stefanescu, Yasin Abdullahi, Ilario Defendi,

Design and performance of Active Target GEM-TPC R. Akimoto, S. Ota, S, Michimasa, T. Gunji, H. Yamaguchi, T. Hashimoto, H. Tokieda, T. Tsuji, S. Kawase,

Semiconductor Detectors and Applications on X-ray imaging Natalie Diekmann Particle Physics 1 NIKHEF.

Budker INP V.Aulchenko1,2, L.Shekhtman1,2, V.Zhulanov1,2

The New CHOD detector for the NA62 experiment at CERN S

Latest results from the superfluid-helium UCN source SUN2 at ILL

Elettra Sincrotrone Trieste

Sensitivity of Hybrid Resistive Plate Chambers to Low-Energy Neutrons

Saikat Biswas, A. Abuhoza, U. Frankenfeld, C. Garabatos,

Triple GEM detectors : measurements of stray neutron.

Johannes Leidner, Fabrizio Murtas, Marco Silari

Micro-Pattern Gaseous Detectors

Power pulsing of AFTER in magnetic field

Neutron detectors for the NMX instrument

PAN-2013: Radiation detectors

Guidance for hands-on exercise Neutron target

Ionization detectors ∆

PHOTON DETECTION AND LOCALIZATION WITH THE

GEANT Simulations and Track Reconstruction

Presentation transcript:

An experimental limit on neutron mirror-neutron oscillation Ulrich Schmidt Physikalisches Institut, Universität Heidelberg, Germany

What are mirror particles ??? P World is not P symmetric P RR World is PR symmetric

Properties of mirror particles For each particle exists a mirror particle which has exactly the same properties in the mirror world, as the particle in the world beside handedness. Interaction between particles and mirror particles: gravity Possible interaction between particles and mirror particles: Oscillations/mixing between neutral particles and mirror particles 

phenomenology of oscillation with free flying neutron: only magnetic field counts for  E

“field free” region magnetic field strongly suppress oscillation

n beam beam dump field free region detector field free region Reappearance experiment

Problem: loss of neutrons due to  -decay, scattering... R ±  R is compatible with 1 => But !! Only is suppressed by a moderate magnetic field (0.1 mT) Disappearance experiment principle of our measurement: measuring loss of neutrons due to n beam field free region detector

RESEDA am FRM II

CASCADE: Multiple Boron Layers on GEMs GEMs can be operated to be transparent for charges!  they can be cascaded! Each one can carry two Boron layers. Last one operated as amplifier. Accumulate single layer detection efficiency up to 50% for thermal neutrons (1.8Å) and up to 75% for cold neutrons (5Å). 10 B + n  7 Li +  MeV ( 6%) 3838 b  7 Li * +  MeV (94%) Problem: n-counting at very high rates Conventionel ( 3 He-counters): < 10kHz/cm 2 CASCADE: up to 10 MHz /cm 2

The Gas Electron Multiplier (GEM) Amplifier Mode In hole high fields allow Gas amplification Transparent Mode At gain 1, electric fields transport charges through the holes Electrons Ions pictures from Sauli The GEM inherently introduces high rates capability of 10 MHz/cm 2 ! taken from Sauli et al.:

length flight path velocity of neutrons B-field integral along neutron flight path gyromagnetic ratio U. Kinkel Z.Phys.C 54, (1992)

measuring cycle: - 0.5s without magnetic field - switch magnetic field on, wait 0.1 s - 0.5s with magnetic field - switch magnetic field off, wait 0.1 s length flight path: 6m,  = 11Å => v = 360m/s => t = 17ms 2 day measurement, about 10 5 individual ratios R

scattering (standard deviation) of the individual ratios: error of the individual ratios calculated from number of count: => sensitivity is limited by intensity fluctuations of the beam

VCN beam 50% monitor counter detector field free region noise of R ~ will be much less than noise of R

Thank you for your attention Experiment FRM II Barbara Böhm 1 Wolfgang Häusler 2 Dominik Streibel 2 1 Physikalisches Institut Heidelberg 2 FRM II (Forschungsreaktor München II) CASCADE detector Martin Klein 1 Gerd Mozel 1 Jörg Betz 1 Stefan Backfisch 1 n

The Assembled 2D-Detector GEM-foils coated with 10 B and 2D readout structure EMI shielding (500 µm Al) Power supply and thermal management FPGA based readout board ASIC frontend- electronic Detector entrance window (100 µm Al)

Neutron-Pictures with the 2D-200 CASCADE Detector System Tesa-Tape old PC- Mouse Water Flow- Controller measured at instrument EKN at FZ Jülich Pixel (1.56mm)