Talks / papers

Talks / papers

HARPO LLR group (2014) : Igor Semeniouk, Denis Bernard, Mickael Frotin, Yannick Geerebaert, Philippe Gros, 菅野恵太 (Keita Kanno), 王少博　(Shaobo Wang).

PUBLICATIONS.

2022
- MeV-GeV Polarimetry with gamma -> e+e-: Asserting the Performance of Silicon Strip Detectors-Based Telescopes, Nucl.Instrum.Meth.A 1042 (2022) 167462
- Invited chapters for the Handbook of X-ray and Gamma-ray Astrophysics (Bambi, C., Santangelo, A. (eds), Springer)
  - Gamma-Ray Polarimetry , arXiv:2205.02072 [astro-ph.IM] , i , doi
  - Time projection chambers for gamma-ray astronomy arXiv:2206.08676 [astro-ph.IM] , i , doi
2021
- Pair invariant mass spectrum and polarization asymmetry in the event generation of gamma-ray conversions, arXiv:2102.00985 [hep-ph] , Nucl. Instrum. Meth. A 997 (2021) 165163
2019
- A 5D, polarised, Bethe-Heitler event generator for gamma -> mu+mu- conversion, arXiv:1910.12501 , i
2018
- A 5D, polarised, Bethe-Heitler event generator for gamma to e+e- conversion, arXiv:1802.08253 [hep-ph] , Nucl. Instrum. Meth., A 899 (2018) 85 , i , sciencedirect-com.in2p3.bib.cnrs.fr
2017
- Performance measurement of HARPO: a Time Projection Chamber as a gamma-ray telescope and polarimeter , Astroparticle Physics 97 (2018) 10 , arXiv:1706.06483 [astro-ph.IM] , i , sciencedirect-com.in2p3.bib.cnrs.fr
- Charged particle tracking without magnetic field: optimal measurement of track momentum by a Bayesian analysis of the multiple measurements of deflections due to multiple scattering, Nucl. Instrum. Meth., A 867 (2017) 182 , arXiv:1706.05863 [physics.data-an] , i , sciencedirect-com.in2p3.bib.cnrs.fr
- γ-ray telescopes using conversions to electron-positron pairs: event generators, angular resolution and polarimetry, Astroparticle Physics 88 (2017) 60 , arXiv:1612.06239 [astro-ph.IM] , i , sciencedirect-com.in2p3.bib.cnrs.fr
- γ-ray polarimetry with conversions to e+e- pairs: polarization asymmetry and the way to measure it, , Astroparticle Physics 88 (2017) 30 , arXiv:1611.05179 [astro-ph.IM] , i , sciencedirect-com.in2p3.bib.cnrs.fr
2015
- Compton polarimetry revisited, Nucl. Instrum. Meth. A 799 (2015) 155 , arXiv:1507.02824 [astro-ph.IM] , i , sciencedirect-com.in2p3.bib.cnrs.fr
2013
- "Polarimetry of cosmic gamma-ray sources above e+e- pair creation threshold" , Nucl. Instrum. Meth. A 729 (2013) 765 , arXiv:1307.3892 [astro-ph.IM] , i , sciencedirect-com.in2p3.bib.cnrs.fr
2012
- "TPC in gamma-ray astronomy above pair-creation threshold", Nucl. Instrum. Meth. A 701 (2013) 225 , arXiv:1211.1534 [astro-ph.IM] , i , sciencedirect-com.in2p3.bib.cnrs.fr

TALKS, POSTERS .

2023
- Detectors for spaceborne gamma-ray telescopes and polarimeters: state of the art and perspectives, 2023 International Conference of Deep Space Sciences. Session 14. Future spaceborne MeV detectors and related astrophysics, pdf
  On the Angular Resolution of Pair-Conversion $\gamma$-Ray Telescopes, proceedings, arXiv:2305.19690 [astro-ph.IM]
2022
- Polarimetry of $\gamma \to e^+e^-$: Performance of Silicon Strip Detectors-Based Telescopes; A Case Study: the Fermi-LAT ( link ) Tenth International Fermi Symposium, Johannesburg, 9-15 Oct. 2022.
2021
- Polarimetry of gamma rays converting to e+e- pairs: performance of silicon strip detectors-based telescopes,
  - Symposium AstroPol2020 - New Era of Multi-Wavelength Polarimetry, March 2021
  - Ninth International Fermi Symposium, April 12-17, 2021
2019
- 5D gamma conversion model: high energy tests (80 GeV - 100 TeV), I. Semeniouk and D. Bernard, 24th Geant4 Collaboration Meeting, 23-27 September 2019, Jefferson Lab, link
- Characterizing the performance of the MeV gamma-ray telescopes and polarimeters of the future, D. Bernard, 12th INTEGRAL conference and 1st AHEAD Gamma-ray workshop, 11 - 15 Feb. 2019, Geneva, pdf , arXiv:1902.07910 [astro-ph.IM] , i , Mem. Soc. Ast. It. 90 (2019) 149
- High-performance gamma-ray astronomy and polarimetry with low-density homogeneous active targets: gas detectors, D. Bernard, eXtreme19, 22-25 January 2019, Padova, h
2018
- Gamma ray polarimetry in astrophysics, D. Bernard, TPC2018 9th symposium on Large TPCs for low-energy rare event detection, Paris, 12-14 Dec. 2018. h
- G4BetheHeitler5DModel: un générateur d'événements gamma -> e+e-, D. Bernard, Journées théorie PNHE, 1-2 October 2018, Institut d'Astrophysique de Paris, h
- New 5D gamma conversion model, D. Bernard and I. Semeniouk, 23rd Geant4 Collaboration Meeting 27-31 August 2018, Lund, Sweden, h
- Gas active targets: a window to high-energy gamma-ray polarimetry with conversions to e+e-; experimental demonstration with the HARPO TPC (time projection chamber) prototype, D. Bernard et al., TeV Particle Astrophysics conference (TeVPA 2018) 27-31 Aug 2018. Berlin, Germany, poster , h
- PM2018 14th Pisa Meeting on advanced detectors, 27 May - 02 June 2018, Isola d'Elba (Italy)
  - Kalman meets Molière : Optimal measurement of charged particle momentum from multiple scattering by Bayesian analysis of filtering innovations , poster , h , D. Bernard & M. Frosini
  - HARPO, a gas TPC active target for high-performance gamma-ray astronomy; demonstration of the polarimetry of MeV gamma-rays converting to e+e- pair , h , D. Bernard et al., proceedings arXiv:1805.10003 [astro-ph.IM] , i , Nucl. Instrum. Meth., A 936 (2019) 405 , sciencedirect-com.in2p3.bib.cnrs.fr
  - C++ implementation of Bethe-Heitler, 5D, Polarized, $\gamma \to e^+ e^-$ Pair Conversion Event Generator , poster , h , I. Semeniouk & D. Bernard , Nucl. Instrum. Meth., A 936 (2019) 290 , i , sciencedirect-com.in2p3.bib.cnrs.fr
- 5D gamma conversion model, I. Semeniouk & D. Bernard, Jan. 2018 Geant4 EM meeting
2017
- Calorimeter-less gamma-ray telescopes: Optimal measurement of charged particle momentum from multiple scattering by Bayesian analysis of Kalman filtering innovations, D. Bernard , CosPA 2017 , International Symposium on Cosmology and Particle Astrophysics, Dec. 11-15, 2017 Yukawa Institute for Theoretical Physics, Kyoto University, pdf
- 7th International Fermi Symposium , 15-20 October 2017 , Garmisch-Partenkirchen
  - Polarimetry and high angular resolution gamma-ray observations in the MeV regime using a novel detector concept , D. Horan abstract , pdf , procs. PoS(IFS2017)180
  - Calorimeter-less gamma-ray telescopes: Optimal measurement of charged particle momentum from multiple scattering by Bayesian analysis of filtering innovations , D. Bernard , abstract , pdf , procs. PoS(IFS2017)126 , arXiv:1710.10886 [astro-ph.IM] , i
  - The first VEGAS-free, exact, 5D, polarized photon-to-e+e-pair conversion event generator , poster , D. Bernard , abstract , pdf , procs. PoS(IFS2017)127
- "A Bethe-Heitler 5D polarized photon-to-e+e-pair conversion event generator", D. Bernard , here , Geant4 User Workshop, 19th-22nd Sept. 2017, Wollongong, Australia , indico
- 35th International Cosmic Ray Conference, ICRC2017 12 - 20 July 2017, Busan, Korea , indico
  - HARPO, prototype of a gamma-ray polarimeter: Results of a polarised photon beam test between 1.7 and 74 MeV , D. Attié et al. [GA130] , proceedings PoS(ICRC2017)818
  - poster , D. Bernard
    - A Bethe-Heitler 5D polarized photon-to-e+e-pair conversion event generator , [GA002] , proceedings PoS(ICRC2017)859
    - Optimal measurement of charged particle momentum from multiple scattering: Bayesian analysis of filtering innovations , [GA087] , proceedings PoS(ICRC2017)830
- 8th International Conference on New Developments in PhotoDetection, Tours, France, July 2017, NDIP 2017
  - HARPO, a TPC for gamma polarimetry above 1 MeV , P. Colas et al.
  - ASTRE : Asic with Switched Capacitor Array (SCA) and Trigger for detector Readout Electronics hardened against SEL, D. Baudin et al. , poster , Nucl. Instrum. Meth. A 912 (2018) 66
- "Linear Polarimetry with γ → e+e- conversions" , D. Bernard , Polarised Emission from Astrophysical Jets Conference, June 12-16, 2017, Ierapetra, Greece, pdf , Galaxies 5 (2017) 72 , arXiv:1709.08544 [astro-ph.IM] , i
  - Gamma-ray astronomy with magnetic-field-free active targets: Optimal measurement of charged particle momentum from multiple scattering with a Bayesian analysis of filtering innovations , poster pdf
  - High angular-resolution high sensitivity gamma-ray astronomy and linear polarimetry with low density (gas) detectors in the MeV-GeV energy range , poster pdf
- "HARPO, a TPC for gamma polarimetry above 1 MeV", P. Colas et al. the 5th International Conference on Micro-Pattern Gas Detectors, MPGD 2017 22-26 May 2017, Philadelphia here
- "Gamma-ray astronomy with low density (gas) detectors in the MeV-GeV energy range", D. Bernard et al.,, International Conference on the Structure and the Interactions of the Photon, photon 2017 , CERN, 22-26 May 2017. here
- "A comprehensive analysis of polarised $\gamma$-ray beam data with a HARPO demonstrator", Ryo Yonamine et al.,, TIPP 2017 Conference, Beijing May 22-27 2017. abstract , Springer Proc.Phys. 212 (2018) 27
- Polarimetry with e+e- pair conversions, D. Bernard, [AHEAD WP9] - SWG kick-off meeting and MEGALIBschool, April 25-28, Barcelona , pdf
- A TPC for MeV Astrophysics: high-angular-resolution observations and polarimetry workshop , 12-14 avril 2017, Ecole Polytechnique
  - ST3G - A prototype balloon detector, Deirdre Horan
  - TPC review and electronics for TPC, Alain Delbart
  - HARPO : development of a prototype gas time projection chamber (TPC) as a gamma-ray active target, for ground validation, Denis Bernard
  - High performance gamma-ray astronomy and polarimetry with gas active-target telescopes, Denis Bernard
  - Angular resolution and polarimetry measurement in a 1.7-74 MeV photon beam with HARPO, Philippe Gros
- "A Bethe-Heitler 5D polarized photon-to-e+e-pair conversion event generator" , D. Bernard , here , Geant4 Space Users' Workshop G4SUW , 10-12 April 2017, Guildford, Surrey, GU2 UK.
- A Bethe-Heitler 5D polarized photon-to-e+e-pair conversion event generator, D. Bernard, e-ASTROGAM : The extreme Universe workshop, 28 Feb. - 02 Mar. 2017, Padova, abstract , pdf
2016
- RD51 meeting, December 12-15 2016, CERN, P. Gros, et al.
  - "Simulation of HARPO and its calibration/validation; use for the correction of systematics in our measurement of gamma ray polarisation", pdf
  - "Long term gas stability of the HARPO detector under HV", pdf
- "A TPC as high performance gamma-ray telescope and polarimeter: polarisation measurement in a beam between 1.7 and 74MeV with HARPO", P. Gros, et al. TPC2016 8th international symposium on “large TPCs for low-energy rare event detection”, Paris 5-7 Dec. 2016. slides , J.Phys.Conf.Ser. 1029 (2018) 012003 , pdf
- SciNeGHE 2016 : "11th Workshop on Science with the New generation of High Energy Gamma-ray Experiments" : High-energy gamma-ray experiments at the dawn of gravitational wave astronomy 18-21 October 2016, Pisa,
  - "HARPO: 1.7 - 74 MeV gamma-ray beam validation of a high-angular-resolution high-polarisation-dilution gas telescope and polarimeter", D. Bernard et al., ( abstract ) pdf , arXiv:1702.08429 [astro-ph.IM] , Il Nuovo Cimento 40 C (2017) 117 , i
  - "Characterisation and comparison of event generators for pair conversion: a crucial step for future low energy gamma telescopes", P. Gros, et al., ( abstract ) pdf , Il Nuovo Cimento 40 C (2017) 118 , i
- "Study of the HARPO TPC for a high angular resolution gamma-ray polarimeter in the MeV-GeV energy range", D. Attié et al., 14th Topical Seminar on Innovative Particle and Radiation Detectors (IPRD16) (IPRD16) 3 - 6 October 2016 Siena, Italy, pdf
- "Gamma-ray polarimetry in the pair regime with the HARPO TPC", P. Gros, et al., TeV Particle Astrophysics 2016, 12-16 September 2016 CERN, abstract , pdf
- "Measurement of a polarised gamma ray beam from 1.7 to 74 MeV with the HARPO TPC", P. Gros, et al., gamma2016 6th International Symposium on High-Energy Gamma-Ray Astronomy, July 11-15 2016, Heidelberg, Germany, poster
- "Measurement of polarisation asymmetry for gamma rays between 1.7 to 74 MeV with the HARPO TPC", P. Gros, et al., SPIE2016 Space Telescopes and Instrumentation conference 2016: Ultraviolet to Gamma Ray, Edinburgh 26 June - 1 July 2016, 9905-95, arXiv:1606.09417 [astro-ph.IM] , Proc. SPIE 9905, Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray, 99052R , i
- "ELECTRONICS FOR HARPO, Design, development and validation of electronics for a high performance polarized $\gamma$-ray detector", Y. Geerebaert, et al., RT2016, 20th Real Time Conference, 5-10 June 2016, Padova ( abstract.pdf , poster.pdf , proceedings Real Time Conference (RT), 2016 IEEE-NPSS , i
- Future Space-based Gamma-ray Observatories Workshop , NASA Goddard Space Flight Center, 24-25 March 2016.
  - "Gas TPCs for High-angular-resolution and Sensitivity Gamma -> e+e- Astronomy and Polarimetry", D. Bernard, pdf
  - "The HARPO project", D. Bernard et al., pdf
- "Measurement of a polarised gamma ray beam from 1.7 to 74 MeV with the HARPO TPC", Y. Geerebaert, Ph. Gros et al., 14th Vienna Conference on Instrumentation VCI2016, 15 - 19 February 2016, Vienna, poster abstract , pdf , proceedings Nucl. Instrum. Meth. A 845 (2017) 228 , arXiv:1603.06817 [physics.ins-det] , i

2015

"High performance MeV-GeV gamma-ray astronomy with a time projection chamber", D. Bernard et al., abstract, pdf , TeV Particle Astrophysics 2015 26-30 October 2015 Kashiwanoha, Japan TeVPA 2015
"HARPO, TPC as a gamma telescope and polarimeter: Measurements in a polarised photon beam between 1.7 MeV and 74 MeV" here P. Gros et al., RD51 Collaboration meeting

MPGD2015 4th Conference on Micro-Pattern Gaseous Detectors, Trieste, October 12 - 15, 2015, and RD51 Collaboration Meeting, Trieste, October 16 - 17, 2015,

	MPGD2015	RD51
Measurement of a polarised gamma ray beam from 1.7 to 74 MeV with the HARPO TPC, P. Gros et al.	poster pdf	link
Circulation and purification of gas in the sealed HARPO TPC, M. Frotin, P. Gros et al.	poster pdf , EPJ Web Conf. 174 (2018) 05002 , i

"HARPO, TPC as a gamma telescope and polarimeter: First measurement in a polarised photon beam between 1.7 and 74 MeV", A. Delbart et al., The 34th International Cosmic Ray Conference (ICRC), July 30 to August 6, 2015, The Hague, The Netherlands, poster , abstract , pdf , PoS(ICRC2015)1016 , i
RD51 Mini-Week and 3rd Academy-Industry Matching Event on Photon Detection , CERN, 8 - 12 June 2015
- Polarimetry of high-energy photons (X, gamma) for astrophysics, D. Bernard, pdf
- Measurement of gas stability using cosmic rays in the (sealed) HARPO TPC, P. Gros, slides
"Measurement of a polarised gamma ray beam from 1.7 to 74 MeV with the HARPO TPC", P. Gros et al., 13th Pisa Meeting on Advanced Detectors La Biodola, Isola d'Elba (Italy) May 24 - 30, 2015, poster (accepted abstract)
"Gamma Polarimetry Using Conversion to e+e- Pair With ASTROGAM", D. Bernard, pdf The gamma-ray sky with astrogam, Second ASTROGAM Workshop March 26-27, 2015 Amphitheatre "Georges Charpak", LPNHE, Paris
"HARPO, mesure en faisceau de photons polarisé au Japon", Séminaire au LLR, P. Gros, 12 janvier 2015. pdf

2014
- "HARPO: a TPC concept for γ-ray polarimetry with high angular resolution in the MeV-GeV range", S. Wang et al., 7th conference on Large TPCs for Low Energy Rare Events 15-17 Dec. 2014 Paris. slides , J.Phys.Conf.Ser. 650 (2015) 012016 , arXiv:1503.03772 [astro-ph.IM] , i
- "HARPO", D. Bernard et al., P2IO Scientific Council Ecole Polytechnique, 17 - 18 Dec. 2014 pdf
- "Measurement of polarised gamma rays (1.7 to 72MeV) in the HARPO TPC", P. Gros et al., RD51 mini week meeting, 8-11 Dec. 2014, CERN, slides
- "A Thin Homogeneous Telescope and Polarimeter as the Post-Fermi Mission?", P. Gros et al., 5th Fermi International Symposium, Nagoya, Japan, Oct. 20 - 24, 2014. abstract , poster pdf
- "HARPO : gamma-ray polarimetry for astro-physics - a window about to open ?" D. Bernard et al., "X-ray polarisation in astrophysics - a window about to open ?" COST 14 Aug 25-28 2014, Stockholm, Sweden pdf
- "HARPO: a TPC concept for gamma ray polarimetry with high angular resolution in the MeV-GeV range", D. Attié et al., 7th International Conference on New Developments In Photodetection NDIP 14 Tours, France, June 30th to July 4th 2014, poster pdf
- “HARPO : a TPC as a gamma-ray telescope and polarimeter, ” D. Bernard et al., SPIE 2014 Astronomical Telescopes and Instrumentation Conference, 22 - 27 June 2014, Montréal, Quebec Canada.
  ( Ultraviolet to Gamma Ray (Conference 9144) , Session 13: Instrumentation for Polarimetry ) arXiv:1406.4830 [astro-ph.IM] , i , draft slides
- "HARPO - TPC for High Energy Astrophysics and Polarimetry from the MeV to the TeV", talk , P. Gros et al., TIPP 14 3rd Technology and Instrumentation in Particle Physics conference, 2-6 June 2014 Amsterdam, Proceedings PoS(TIPP2014)133 , i
- HARPO A gas detector concept for photon detection and polarimetry in the MeV - GeV range, P. Gros, Colloque Grand Instruments du PNHE, 2-3 avril 2014 Institut d'Astrophysique de Paris (IAP)
- "Characterisation of a micromegas + 2 GEM assembly for HARPO" (pdf), P. Gros, 13 th RD51 Collaboration Meeting, CERN 5 - 7 Feb 2014.
2013
- 13th Topical Seminar on Innovative Particle and Radiation Detectors, IPRD13 7 - 10 October 2013 Siena, Italy ( pdf )
- poster Journée de l'Espace, Ecole Polytechnique mercredi 2 octobre 2013 poster.pdf
- 14th ICATPP Conference on Astroparticle, Particle, Space Physics and Detectors for Physics Applications, Como 23-27 September 2013 ( talk.pdf , proceeding.pdf , Worldscientific pp8-12 )
- Atelier 2013, Scientific perspectives in the MeV domain, 15-16 Jan 2013, APC Paris
2012
- TPC2012, 6th symposium on large TPCs for low energy rare event detection, Paris France 17 - 19 Dec 2012 ( pdf )
- Gamma2012 5th International Symposium on High-Energy Gamma-Ray Astronomy July 9-13 2012 Heidelberg Germany. ( pdf )
- RD51 June 13-15 mini-week ( pdf )
- FJPPL(TYL)-FKPPL Workshop (France, Japan, Korea) 28 - 30 May 2012, Clermont-Ferrand ( pdf )
- 12th Pisa Meeting on Advanced Detectors Elba, Italy May 20 - 26, 2012 (pdf) , procs NIM A 718 (2013) 395 , arXiv:1210.4399 [astro-ph.IM] , i
2011
- Workshop IRFU MicroPattern Gaseous Detectors 6 - 8 dec 2011, Saclay ( pdf )
- MPGD2011 2nd International Conference on Micro Pattern Gaseous Detectors 29 Aug - 1 Sept 2011, Kobe, Japan ( pdf ) , proc d 2012 JINST 7 C03029 , i
- NDIP 2011 6th International Conference On New Developments In Photodetection 4-8 Jul 2011, Lyon, France , proc arXiv:1203.5889 [astro-ph.IM] , NIM A 695, 2012, 71–73 , i
2010
- 6th RD51 Collaboration Meeting , 7-10 Oct 2010, Bari, Italy ( pdf )
- Atelier Perspectives pour l'astronomie gamma des moyennes énergies, 14 et 15 sept. 2010, CESR, Toulouse ( pdf )
- 17th EGS Workshop 1 - 4 Aug 2010 KEK, Tsukuba, Japan , proc KEK-PROC.-2010-09 94-98.