MuCap High-Precision Measurement of Muon Capture on the Proton BVR35 Progress report presented by Claude Petitjean, PSI 12 Febuary 2004

Slides:

Advertisements

Similar presentations

A.Vorobyov on behalf of MuCap collaboration Determination of the nucleon’s pseudoscalar form factor in the MuCap experiment HSQCD 2014 Gatchina

Advertisements

Muon Capture on the Proton Final results from the MuCap experiment Muon Capture on the Proton Final results from the MuCap experiment gPgP Peter Winter.

Spin Filtering Studies at COSY and AD Alexander Nass for the collaboration University of Erlangen-Nürnberg SPIN 2008, Charlottesville,VA,USA, October 8,

First measurement of kaonic hydrogen and nitrogen X-rays at DA  NE J. Zmeskal Institute for Medium Energy Physics, Vienna for the DEAR Collaboration LNF.

Precision Measurement of Muon Capture on the Proton “  Cap experiment”  - + p   + n  PSI Supported by Paul Scherrer.

Progress on the final TWIST measurement of James Bueno, University of British Columbia and TRIUMF on behalf of the Triumf Weak Interaction Symmetry Test.

Muon Capture on the Deuteron Motivation for a new Experiment B e r n h a r d L a u s s U C B e r k e l e y for the MuCAP Collaboration Petersburg Nuclear.

1 Peter Kammel for the MuSun Collaboration Muon Capture on the Deuteron The MuSun Experiment BV39, Feb 21, 08.

Basic Measurements: What do we want to measure? Prof. Robin D. Erbacher University of California, Davis References: R. Fernow, Introduction to Experimental.

Precision Muon Physics Group muon capture on proton  - + p   + n  to 1 % muon capture on proton  - + p   + n  to 1 % Nucleon form factors, chiral.

Precision Measurement of Muon Capture on the Proton “  Cap experiment”  - + p   + n Petersburg Nuclear Physics Institute (PNPI), Gatchina,Russia Paul.

New Precision Determination of g p and G F, the MuXperiments at PSI Bernhard Lauss University of Berkeley on behalf of the MuCAP and MuLAN.

Muon Capture as a Probe of the Nucleon’s Axial Structure – the  Cap Experiment Peter Kammel University of Illinois at Urbana-Champaign

Peter Kammel University of Illinois at Urbana-Champaign MuCap Collaboration V.A. Andreev,

1 Measurement of the Rate of Muon Capture in Hydrogen Gas and Determination of the Proton’s Pseudoscalar Coupling Steven Clayton Dissertation Talk June.

PRECISION MEASUREMENT OF THE RATE OF MUON CAPTURE IN HYDROGEN GAS AND DETERMINATION IN THE PROTON’S PSEUDOSCALAR COUPLING g P PNPI participants in MuCAP.

MuCap: From first results to final precision on determining g P Brendan Kiburg 2008 APS April Meeting April 12 th, 2008.

Data Analysis and Present Status of the MuCap Experiment Steven Clayton* University of Illinois *Present address: LANL Outline: 1)Experimental overview.

 -Polarization in the Reaction   p  K 0   "EPECUR" Experiment Proposal. I.G. Alekseev, P.E. Budkovsky, V.P. Kanavets, M.M. Kats, L.I. Koroleva, V.V.

Precision Muon Capture on the Proton and Very Light Nuclei 1 Peter Kammel Department of Physics and Center for Experimental Nuclear Physics and Astrophysics,

2 1/March/2015 日本物理学会大70回年次大会＠早稲田大学東大ICEPP 内山雄祐他 MEG II collaboration.

A determination of the formation rate of muonic hydrogen molecules from the MuCap experiment Sara Anita Knaack Final Exam June 25.

Mitglied der Helmholtz-Gemeinschaft Petersburg Nuclear Physics Institute, Russia Storage cells for internal experiments with Atomic Beam Source at the.

Precision Muon Capture at PSI 1 Peter Kammel Department of Physics and Center for Experimental Nuclear Physics and Astrophysics, University of Washington.

MEG positron spectrometer Oleg Kiselev, PSI on behalf of MEG collaboration.

Negative Ions in IEC Devices David R. Boris 2009 US-Japan IEC Workshop 12 th October, 2009 This work performed at The University of Wisconsin Fusion Technology.

The MuLan Detector Calibration System Christopher J. Church James Madison University April 23, 2005.

TWIST A Precision Measurement of Muon Decay at TRIUMF Peter Kitching TRIUMF/University of Alberta TWIST Collaboration Physics of TWIST Introduction to.

Muon PSI Peter Winter University of Washington gPgP L 1A / d R.

Peter Kammel First Results from the New Muon Lifetime Experiments at PSI GFGF gPgP L 1A MuCap “MuSun” project MuLan.

NanoPHYS’12 – December 17-19, 2012 K. Nakano, S. Miyasaka, K. Nagai and S. Obata (Department of Physics, Tokyo Institute of Technology) Drift Chambers.

PSI July 2002MuEGamma Review Meeting1 Beam Line Status update 1.  E5 Test Beam Overview : Aims + RequirementsAims + Requirements Zone Layout + Measurement.

David M. Webber University of Illinois at Urbana-Champaign For the MuLan Collaboration A new determination of the positive muon lifetime to part per million.

David M. Webber University of Illinois at Urbana-Champaign For the MuLan Collaboration A new determination of the positive muon lifetime to part per million.

Leonid AFANASYEV JOINT INSTITUTE FOR NUCLEAR RESEARCH on behalf of the DIRAC collaboration 37 th International Conference on High Energy Physics 2 – 9.

Muon Capture in Hydrogen and Deuterium EXA08 int. conference on exotic atoms & related topics Vienna Sept presentation by Claude Petitjean representing.

June 17, 2004 / Collab Meeting Strategy to reduce uncertainty on a  to < 0.25 ppm David Hertzog University of Illinois at Urbana-Champaign n Present data.

22 September 2005 Haw05 1  (1405) photoproduction at SPring-8/LEPS H. Fujimura, Kyoto University Kyoto University, Japan K. Imai, M. Niiyama Research.

Light nuclei production in heavy-ion collisions at RHIC Md. Rihan Haque, for the STAR Collaboration Abstract Light nuclei (anti-nuclei) can be produced.

Measurement of Vus. Recent NA48 results on semileptonic and rare Kaon decays Leandar Litov, CERN On behalf of the NA48 Collaboration.

Review of synthesis of super heavy elements: reactions, decays and characterization. Experimental Setup of MASHA. Results of first experiments. study.

The inсlusive produсtion of the meson resonanсes ρ 0 (770), K * (892), f 0 (980), f 2 (1270) in neutrino- nuсleon сharged сurrent (CC) interaсtions Polyarush.

J. Kohlbrecher, Polarized Solid Targets, Honnef 2003 Dynamics Of Nuclear Spin Polarization J. Kohlbrecher Paul Scherrer Institute CH-5232 Villigen Switzerland.

Unblinding the MuCap experiment the final results of μp capture rate Λ S and of electro-weak coupling constant g P LTP Seminar April 23, 2012 Claude Petitjean.

David M. Webber For the MuLan Collaboration University of Wisconsin-Madison Formerly University of Illinois at Urbana-Champaign August 12, 2011 A part-per-million.

Muon Capture on the Proton: First Physics Results from the MuCap Experiment Steven Clayton University of Illinois Urbana Champaign

Peter Kammel Muon Capture and the Nucleon’s Axial Structure First Results and Future Plans of the MuCap Experiment GFGF gPgP L 1A MuCap “MuSun” project.

CP violation in B decays: prospects for LHCb Werner Ruckstuhl, NIKHEF, 3 July 1998.

T2K Status Report. The Accelerator Complex a Beamline Performance 3 First T2K run completed January to June x protons accumulated.

First results from CMD-3 detector at VEPP-2000 collider Budker Institute of Nuclear Physics, SB RAS, Novosibirsk, Russia September 2011 E.Solodov (for.

First results from SND at VEPP-2000 S. Serednyakov On behalf of SND group VIII International Workshop on e + e - Collisions from Phi to Psi, PHIPSI11,

ПРЕЦИЗИОННОЕ ИЗМЕРЕНИЕ СКОРОСТИ ЗАХВАТА МЮОНА В ВОДОРОДЕ И ОПРЕДЕЛЕНИЕ ПСЕВДОСКАЛЯРНОГО ФОРМ ФАКТОРА ПРОТОНА g P PNPI participants in MuCAP collaboration*)

OMC rates in different nuclei related to 2β-decay. K.Ya. Gromov, D.R. Zinatulina, C. Briançon, V.G. Egorov, A.V. Klinskih, R.V. Vasiliev, M.V.Shirchenko,I.

Muon Capture: Status and Prospects 1 Peter Kammel Department of Physics and Center for Experimental Nuclear Physics and Astrophysics, University of Washington.

Peter Kammel Fundamental Constants Basic QCD Symmetries “Calibrating the Sun” MuCap MuSun MuLan FAST Muon Lifetime Programme at PSI.

Open and Hidden Beauty Production in 920 GeV p-N interactions Presented by Mauro Villa for the Hera-B collaboration 2002/3 data taking:

The MuCap experiment – final results on μp capture rate Λ S and pseudoscalar coupling g P INPC 2013 Firence Italia June 2 - 7, 2013 Claude Petitjean on.

1 Peter Kammel Muon Capture and Basic Solar Neutrino Reactions The New MuSun Experiment Muon Capture and Basic Solar.

Kevin Lynch MuLan Collaboration Boston University CIPANP 2006 A new precision determination of the muon lifetime Berkeley, Boston, Illinois, ITU, James.

– + + – Search for the μEDM using a compact storage ring A. Adelmann 1, K. Kirch 1, C.J.G. Onderwater 2, T. Schietinger 1, A. Streun 1 1 Paul Scherrer.

David M. Webber For the MuLan Collaboration University of Wisconsin-Madison Formerly University of Illinois at Urbana-Champaign DPF Meeting, August 2011.

High-Precision Measurement of Muon Capture on the Proton

The MuCap experiment: A measurement of

Muon Capture on the Deuteron The MuSun Experiment

First results from the MuLan and MuCap experiments

High Precision Measurement of Muon Capture on the Proton

Precision Measurement of Singlet mp Capture in a Hydrogen TPC

ACCELERATORS AND DETECTORS

Identified Charged Hadron

Identified Charged Hadron Production at High pT

Presentation transcript:

MuCap High-Precision Measurement of Muon Capture on the Proton BVR35 Progress report presented by Claude Petitjean, PSI 12 Febuary m

MuCap Experiment experimental goal principle of measurement apparatus time projection chamber (TPC) data from run in fall 2003 some results milestones reached in 2003 upgrades for run in fall 2004 Beam request 2004

MuCap collaboration V.A. Andreev, A.A. Fetisov, V.A. Ganzha, V.I. Jatsoura, A.G. Krivshich, E.M. Maev, O.E. Maev, G.E. Petrov, G.N. Schapkin, G.G. Semenchuk, M. Soroka, A.A. Vorobyov Petersburg Nuclear Physics Institute (PNPI), Gatchina , Russia P.U. Dick, A. Dijksman, J. Egger, D. Fahrni, M. Hildebrandt, A. Hofer, L. Meier, C. Petitjean, R. Schmidt Paul Scherrer Institute, PSI, CH-5232 Villigen, Switzerland T.I. Banks, T.A. Case, K.M. Crowe, S.J. Freedman, F.E. Gray, B. Lauss University of California Berkeley, UCB and LBNL, Berkeley, CA 94720, USA K.D. Chitwood, S.M. Clayton, P.T. Debevec, D. W. Hertzog, P. Kammel, B. Kiburg, R. McNabb, F. Mulhauser, C. J. G. Onderwater, C. Ozben, C.C. Polly, A. Sharp, D. Webber University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA L. Bonnet, J. Deutsch, J. Govaerts, D. Michotte, R. Prieels Université Catholique de Louvain, B-1348 Louvain-La-Neuve, Belgium R. M. Carey. J. Paley Boston University, Boston, MA 02215, USA T. Gorringe, M. Ojha, P. Zolnierzcuk University of Kentucky, Lexington, KY 40506, USA F.J. Hartmann Technische Universität München, D Garching, Germany  Cap

Experimental goal measure the rate Λ s of muon capture on the proton to 1% precision. Muon capture is a semileptonic weak interaction process, and occurs predominantly from the hyperfine singlet atomic bound state. a 1% measurement of Λ s determines g p – the “weak nucleonic charged current induced pseudoscalar form factor” – to < 7% precision. The QCD prediction (Heavy Baryon Chiral Pert. Theory) is ~2% precise.

problem of previous experiments TT SS  pp  pp pp  ortho  para F=0 F=1 J=1 J=0 OP n+ interpretation of rate  S due to formation of ppμ molecules in lq hydrogen and badly known rate OP of ortho-para transitions

Muon Capture and g P ChPT  OP (ms -1 ) gPgP RMC  Cap proposed Saclay exp theory OMC Saclay update from Gorringe & Fearing interpretation of g P vs OP o New TRIUMF exp

Experimental Technique “Lifetime” Method For μ –, muon capture competes with muon decay: This rate decreases the observed μ – lifetime from the vacuum lifetime, which we measure separately with μ + : Thus we need 10 ppm measurements of the μ+/- lifetimes or a statistics of at least for both μ-decays

Experimental Technique “Lifetime” or “Disappearance” Method Since our experiment can only observe e + and e – decay products, muon capture produces a small downward deflection of the μ – lifetime curve from the μ + “vacuum” lifetime curve : The capture rate is easily calculated from the measured lifetimes: log(counts) time μ+μ+ μ –

Technical tasks of MuCap experiment ultra-clean 10-bar hydrogen gas target 0.01 ppm Z>1 impurities deuterium depleted hydrogen („protium“) < 1 ppm deuterium 100% stop identification no wall stops  TPC clean electron identification & tracking 2 cylindrical wire chambers unique μ  e decay assignment μ-stop – e-vertex matching high data rate 30 kHz μ stops high statistics > events for μ + and μ - μSR under control for μ Gauss magnetic field tasks goals to be reached

Experimental Setup – Apparatus μ SC μ PC1 μ PC2 TPC ePC2 ePC1 eSC (Hodoscope) μ beam Muon Detectors Electron Detectors e-detectors cover 75% of 4π

assembly/tests: March-Aug 2003 data-taking: Sept-Oct 2003

U cathodes = 5-6 kV E = 2 kV/cm - v drift = 0.5 cm/μs sensitive volume (12 x 15 x 30) cm 3 TPC design drawing with glass frames and ceramic structure bakeable to 130 C

Online display of μ beam, μ stops in TPC and e in ePC1 ePC1/eSC(phi,z)

event display of muon stops & electrons

event display of μ stop + impurity capture

development of impurities during the 2 good data weeks full scale 1 ppm

summed decay time spectra showing pile-up suppression

μ – decay time spectra of 1 week with clean protium filling

MuCap 2003: exponential fits to each eSC counter pair

MuCap 2003: μSR enhanced fit of μ + decay time spectra

milestones 2003 protium production with < 0.5 ppm deuterium ultra-clean protium gas filling (< 0.1 ppm impurities) – after installation of a new Palladium filter new kV stable operation (perfect μ stop detector!) full e detector consisting of ePC1 and eSC new frontend electronics for ePC1 new compressor electronics for deadtime free ePC1 data collection new DAQ running with 4 MB/s data rate (80% duty cycle) new μSR magnet with ~50 Gauss field new slow control system full electronics for TPC, wire chambers and plastic counters collimated muon beam injection system analysis software in mature development

upgrades for 2004 protium: maintain 1 impurities new gas circulation, cleaning & diagnostics (Gatchina) e-detector: include new ePC2 (  vertex tracking) tune TPC to 5.5 kV (  online control of μd diffusion) new 0.5 mm Beryllium window (  increase good μ stops x 2) μ-detectors: new outside μPC1&2 (  reduce μ-absorption/range-tails) μ-beam: new tune in πE3 area (  < 3% momentum spread) new spare TPC from Gatchina (  >6 kV to see e tracks) upgrade DAQ for larger data flow (  ~100% duty cycle) upgrade μSR magnet with Alu coils (  reduce scattering of e) new online data analysis goal for 2004 : collect a significant part of pileup-protected good μ-decays for μ + and μ -

protium gas circulation and purifying system (Gatchina)

MCstudy of μ stop distributions for various beam windows

MuCap experiment: time plans of upgrades for 2004 run

MuCap experiment: beam request for 2004 In 2004 we hope to approach closely the goal formulated in the proposal: a measurement of the μp singlet capture rate to ± 1% accuracy To accomplish this goal, we need area πE3 for the following activities: -setup of beamline with el.stat. separator, assemble full apparatus and electronics, test all components in the beam: 2 weeks -tune new 35 MeV/c muon beam: 1 week -test & optimize complete detector with beam: 1 week -data production towards good μ - & μ + decays: 2 x 2.5 weeks -contingency for beam losses or other failures 1 week  we request 10 weeks in area πE3 (preferably in Oct-Dec 2004, at the end of the 2004 production cycle)