Newsletter April 2013

Detailed studies of laser-driven ionization of low-charged ions at HI-Jena

Ion beam line for laser-driven ionization experiments.

Since a few months the working group of Prof. Paulus is running laser-driven ionization experiments starting with ions. These are prepared in the ion beam apparatus sketched below. Careful collimation of the ions coming from the ion source results in a transversally very cold beam such that the deflection of the ions by the laser during the ionization process can be measured. At moderately relativistic intensities, we have ionized Ne+ up to charge states as high as Ne⁶⁺ and Xe¹⁺ to Xe¹⁰⁺.

Momentum distribution of Ne2+ ions generated by circularly polarized laser pulses.

The figure below shows the momentum distribution of Ne²⁺generated by circularly polarized laser pulses at an intensity of 10¹⁷W/cm2. The ions are deflected by the laser during the ionization process and recorded on a time and position-resolving detector. The depicted momentum distribution provides detailed information on the ionization dynamics.

News and Announcements

The CRYRING arrived at GSI as the first storage ring for the FAIR facility.

From the Manne-Siegbahn-Laboratory in Stockholm the first storage ring has been delivered to the future FAIR accelerator facility. The so called CRYRING has a diameter of 18 meters and will at first be assembled in cooperation with GSI at the existing GSI facility to conduct experiments and machine tests. In the long run it is planned to use it for research in atomic physics with slow antiprotons at FAIR. CRYRING is an in-kind contribution of Sweden to the FAIR facility, that is built in international cooperation at GSI.

More information: https://www.gsi.de/en/start/news/detailseite/datum/2013/03/26/erster-speicherring-fuer-fair.htm

Cooperation agreement of the Research School APS and the Helmholtz Graduate School for Hadron and Ion Research for FAIR officially finalized.

The Research School for Advanced Photon Science (RS-APS) of the Helmholtz Insitute Jena is now an official cooperation partner of the well-established Helmholtz Graduate School for Hadron and Ion Research for FAIR (HGS-HIRe). Members of RS-APS have the possibility to take part in the various scientific and soft skill training courses offered by HGS-HIRe. Moreover, in the near future joint lecture weeks of both research schools will be organized.

Upcoming events

Topical Workshop on ‘Grand Challenges in Accelerator Optimisation’

06/26/2013–06/27/2013
BE auditorium - Building 6, CERN

During the two days renowned experts will talk about the current state-of-the-art in beam physics, numerical simulations, instrumentation and diagnostics. A special seminar on recent LHC discoveries will complement the program. All participants will have the opportunity to present a poster about their own research work and industry displays are strongly encouraged (free of charge).

Please join us on this occasion to talk about the exciting activities in our field, have discussions about future R&D needs and meet friends from around the world.

More information: https://indico.cern.ch/conferenceDisplay.py?confId=243336

International Conference on New Developments In Photodetection (NDIP 14)

06/30/2013–07/04/2013
International Vinci Congress Center, Tours, France

The conference science program will focus on the latest and most innovative developments in photodetection performed around the world in the fields of nuclear physics, high energy physics and astrophysics and as well as biology, medical and industrial applications. Recent developments on detectors and technologies together with system and associated electronics for PMTs, SiPMs, solid state, gaseous, hybrid photodetectors and emerging technologies for photon detection from the far IR up to the gamma rays will be emphasized.

The conference place will be a pleasant forum to welcome industrial partners to share their most recent commercially available devices or associated instrumentation with our attendees.

More information: http://www.ndip.fr/

International Conference on Vacuum Ultraviolet and X-ray Physics (VUVX2013)

07/12/2013–07/16/2013
Hefei, China

This international conference will bring together scientists from countries all over the world working in the field of developing synchrotron, laser, or plasma based sources of electromagnetic radiation in the vacuum ultraviolet (VUV), soft X-ray and hard X-ray regions, and/or developing novel applications of these sources in a variety of fields.

More information: http://vuvx2013.ustc.edu.cn/dct/page/1

Recent publications

Optical measurement of the longitudinal ion distribution of bunched ion beams in the ESR

W. Q. Wen, M. Lochmann, X. Ma, M. Bussmann, D. F. A. Winters, W. Nörtershäuser, B. Botermann, C. Geppert, N. Frömmgen, M. Hammen, V. Hannen, R. Jöhren, Th. Kühl, Yu. A. Litvinov, R. Sanchez, Th. Stöhlker, J. Vollbrecht, C. Weinheimer, C. Dimopoulou, F. Nolden, and M. Steck
Nucl. Instr. Meth. Phys. Res. A 90, 711 (2013)
doi: 10.1016/j.nima.2013.01.058

Exotic Dense-Matter States Pumped by a Relativistic Laser Plasma in the Radiation-Dominated Regime

J. Colgan, J. Abdallah, A. Ya. Faenov, S. A. Pikuz, E. Wagenaars, N. Booth, O. Culfa, R. J. Dance, R. G. Evans, R. J. Gray, T. Kämpfer, K. L. Lancaster, P. McKenna, A. L. Rossall, I. Yu. Skobelev, K. S. Schulze, I. Uschmann, A. G. Zhidkov, and N. C. Woolsey
Phys. Rev. Lett. 110, 125001 (2013)
doi: 10.1103/PhysRevLett.110.125001

Radiation pressure-assisted acceleration of ions using multi-component foils in high-intensity laser-matter interactions

B. Aurand, S. Kuschel, O. Jäckel, C. Rödel, H. Y. Zhao, S. Herzer, A. E. Paz, J. Bierbach, J. Polz, B. Elkin, G. G. Paulus, A. Karmakar, P. Gibbon, T. Kühl, and M. C. Kaluza
New J. Phys. 15, 033031 (2013)
doi: 10.1088/1367-2630/15/3/033031

Thermal effects in high average power optical parametric amplifiers

J. Rothhardt, S. Demmler, S. Hädrich, T. Peschel, J. Limpert, and A. Tünnermann
Opt. Lett. 38, 763 (2013)
doi: 10.1364/OL.38.000763

Bremsstrahlung polarization correlations and their application for polarimetry of electron beams

S. Tashenov, T. Bäck, R. Barday, B. Cederwall, J. Enders, A. Khaplanov, Yu. Fritzsche, K.-U. Schässburger, A. Surzhykov, V. A. Yerokhin, and D. Jakubassa-Amundsen
Phys. Rev. A 87, 022707 (2013)
doi: 10.1103/PhysRevA.87.022707

Near-monochromatic high-harmonic radiation from relativistic laser-plasma interactions with blazed grating surfaces

M. Yeung, B. Dromey, C. Rödel, J. Bierbach, M. Wünsche, G. Paulus, T. Hahn, D. Hemmers, C. Stelzmann, G. Pretzler, and M. Zepf
New J. Phys. 15, 025042 (2013)
doi: 10.1088/1367-2630/15/2/025042

Helmholtz AssociationHelmholtz Institute Jena