24th symposium of the Hellenic Nuclear Physics Society Ioannina, May, 2015 Dr. Anastasios Dimitriou University of Crete& Institute of Nuclear and Particle Physics, Demokritos, Athens Atomic Physics at the 5MV Tandem at Demokritos: The UOC APAPES project

Present Status of APAPES History and future Presentation by Dr. Anastasios Dimitriou (Univ. of Crete) Post Doctoral researcher of APAPES 24th symposium of the Hellenic Nuclear Physics Society- Ioannina, 22 May 2015

Atomic Physics with Accelerators First time in Greece. First time in Greece. Basic understanding of atomic collision processes Basic understanding of atomic collision processes (simpler systems, isoelectronic studies). High Resolution from collisions of He-like ions with gas targets. Non- statistical production of 1s2s2p 4 P and 1s2s2p 2 P states by e- capture to the 1s2s 3 S state. High Resolution Zero-degree Auger Projectile Spectrometry (ZAPS) from collisions of He-like ions with gas targets. Non- statistical production of 1s2s2p 4 P and 1s2s2p 2 P states by e- capture to the 1s2s 3 S state. Charged particle optics. Development and modeling of electron spectrometers. Simulations and experiments. (comparison with recent and older measurements). Charged particle optics. Development and modeling of electron spectrometers. Simulations and experiments. (comparison with recent and older measurements). Ongoing research at Demokritos Infrastructure (installation of terminal and post strippers). Ongoing research at Demokritos Infrastructure (installation of terminal and post strippers). 24th symposium of the Hellenic Nuclear Physics Society- Ioannina, 22 May 2015

Basic ion-atom collision processes continuum K L M K capture K-M excitation E a - Auger energy KLM Auger transition e-e interaction Atomic Energy levels K ionization Atomic Structure: q, Z p, Z t, E x, E a … Collision Dynamics: b, V p, v t … Cross section: Few HCI: Few-electrons much simpler environment for testing theories Special interest: Two-electron processes, electron correlations and deviations from the independent particle model M-K radiative transition ExEx VpVp ZpZp ZtZt b e-e- e-e- Ion-atom collision vtvt Projectile Ion Charge q+ Target Atom 24th symposium of the Hellenic Nuclear Physics Society- Ioannina, 22 May 2015

24th symposium of the Hellenic Nuclear Physics Society- Ioannina, 22 May 2015 THALES : APAPES University of Crete Tandem Laboratory – INPP Demokritos University of Ioannina 600k€ - experiment at 5 MV Tandem Atomic Physics with Accelerators: Projectile Electron Spectroscopy

Main team Dept. of Physics, Univ. of Crete, Heraklion Dept. of Physics, Univ. of Crete, Heraklion Theo Anastasios Ioannis Angelos Spiros Eleonore Theo Anastasios Ioannis Angelos Spiros Eleonore Zouros Dimitriou Madesis Laoutaris Doukas Defaux Zouros Dimitriou Madesis Laoutaris Doukas Defaux (Prof & PI) (PostDoc) (PhD student) (MS student) (MS student) (3-month practice) (Prof & PI) (PostDoc) (PhD student) (MS student) (MS student) (3-month practice) Univ of Ioannina ENSICAEN Univ of Ioannina ENSICAEN 24th symposium of the Hellenic Nuclear Physics Society- Ioannina, 22 May 2015

Support Team 5MV Tandem, Institute of Nuclear and Particle Physics 5MV Tandem, Institute of Nuclear and Particle Physics NCSRT Demokritos NCSRT Demokritos Dr. Sotiris Dr. Tasos Dr. Michalis Miltos Theo Harissopulos Lagoyannis Axiotis Andrianis Mertzimekis (Director) (Res.) (Res.) (Accel. Eng.) (Prof.) Univ. of Athens 24th symposium of the Hellenic Nuclear Physics Society- Ioannina, 22 May 2015

Manolis Bela Omer Genoveva Jose Benis Sulik Sise Martinez-Lopez Paulo Santos (Prof) (Prof) (Prof) (Prof) (Prof) other other important participants Dept of Physics Univ of Ioannina Greece ATOMKI Debrecen Hungary Univ of Isparta Turkey Dept Fisica Aplicada Madrid, Spain Dept de Fisica Univ Nova de Lisboa Portugal Experiment CPO simulations Zoom lenses Atomic Structure calculations 24th symposium of the Hellenic Nuclear Physics Society- Ioannina, 22 May 2015

APAPES: New beam line for atomic physics November 2011May 2013 November th symposium of the Hellenic Nuclear Physics Society- Ioannina, 22 May 2015

Demokritos Setup – new beam line today! 24th symposium of the Hellenic Nuclear Physics Society- Ioannina, 22 May 2015

Demokritos Setup – Target 6-way cross and spectroscopy chamber Turbo 70 Turbo 550 Spectrometer chamber Gas cell Beam direction Baratron 24th symposium of the Hellenic Nuclear Physics Society- Ioannina, 22 May 2015

New ZAPS setup: Single stage 0 0 HDA with injection lens and 2-D position sensitive detector APAPES (2015) HCI Target gas n t ~10 12 #/cm 3 Differential Pumping ports Focusing and retardation Chamber pressure ~10 -7 Torr Overall efficiency gain ~ High Transmission ~ 90% Paracentric entry 24th symposium of the Hellenic Nuclear Physics Society- Ioannina, 22 May 2015

DSP unit DSP unit from ATOMKI Preamps DSP unit 12V power supply 2-D image on PSD X-proj Y-proj 4P4P Projection along energy axis 24th symposium of the Hellenic Nuclear Physics Society- Ioannina, 22 May 2015

Installation of ion beam stripers at the tandem Terminal gas stripper. Placed inside the terminal and produces ground state beams (1s 2 ). Post foil stripper. Placed in the beam line of the terminal. Necessary to acquire He-like ions at lower energies. Post Gas stripper. Placed in the beam line of the terminal in order to obtain mixed state beams (1s 2, 1s2s) at different fractions and different intensities. Charge analysis program TARDIS (Transmitted chARge DIStribution) used for calculation of the expected charge states after foil and gas stripping available in ( 24th symposium of the Hellenic Nuclear Physics Society- Ioannina, 22 May 2015

Experimental results 24th symposium of the Hellenic Nuclear Physics Society- Ioannina, 22 May Auger Electron Spectra for C 4+ mixed state beams in collisions with various targets at various Energies 2. Comparison with simulations (SIMION)

So far….. Presentations at international conferences: (CAARI-USA, HCI- Argentina, SPARC- Germany, CDAMOP- India, PIPAMON- Hungary, SHIM- Germany etc) At least 7 more until September: (ISIAC- Barcelona, ICPEAC- Toledo etc) 3 publications: M. Dogan et al, Rev. Sci. Instrum. 84 (2013) M. Dogan et al, Rev. Sci. Instrum. 84 (2013) S. Doukas et al, Rev. Sci. Instrum. 86 (2015) S. Doukas et al, Rev. Sci. Instrum. 86 (2015) O. Sise & T. Zouros, J. Spectroscopy 2015 in press 1 participation in conference proceedings (HCI 2014): Ι. Madesis et al, JPCS 583 (2015) Ι. Madesis et al, JPCS 583 (2015) more participation in conference proceedings in progress (CDAMOP, PIPAMON). 24th symposium of the Hellenic Nuclear Physics Society- Ioannina, 22 May 2015

In the near future…  Finish the installation of terminal and post strippers. Installation of Stepping Motor on the PSD in order to investigate the dependence of the energy resolution of the HDA from the distance of the PSD from the focal plane. Installation of Stepping Motor on the PSD in order to investigate the dependence of the energy resolution of the HDA from the distance of the PSD from the focal plane. Investigation of the systematics of the 4 P/ 2 P ratio in an isoelectronic sequence study using He-like ions from Li +, B 3+, C 4+, N 5+, O 6+, F 7+ in the MeV/u. Investigation of the systematics of the 4 P/ 2 P ratio in an isoelectronic sequence study using He-like ions from Li +, B 3+, C 4+, N 5+, O 6+, F 7+ in the MeV/u.  Use different targets such as H 2, He, Ne, Ar. 24th symposium of the Hellenic Nuclear Physics Society- Ioannina, 22 May 2015

Thank you for your attendance Acknowledgement: This research has been co-financed by the European Union (European Social Fund ESF) and Greek national funds through the Operational Program "Education and Lifelong Learning" of the National Strategic Reference Framework (NSRF) Research Funding Program: THALES. Investing in knowledge society through the European Social Fund, grant number MIS th symposium of the Hellenic Nuclear Physics Society- Ioannina, 22 May 2015