Publications and Talks

Apply filter:
Show All 2023-2021 2020-2018 2017 2016 2015 e⁺ source

A. Ushakov
Integration of 120 kW target into e⁺ source
Advanced Electron and Positron Source Concepts, Oct 25, 2023

A. Ushakov, S. Covrig, J. Grames, S. Habet, C. Le Galliard, E. Voutier
High power solid target for positron source at CEBAF
Talk presented at the International Workshop on Future Linear Colliders (LCWS2023), SLAC National Accelerator Laboratory, May 15-19, 2023

A. Ushakov, S. Covrig, J. Grames, S. Habet, C. Le Galliard, E. Voutier
Evaluation of a high-power target design for positron production at CEBAF
14^th International Particle Accelerator Conference (IPAC'23), 7-12 May 2023, Venice Italy, WEPM120, poster

A. Ushakov (Ce⁺BAF WG)
Positron target design and fatigue studies
Jefferson Lab Positron Working Group Workshop, University of Virginia, Charlottesville, VA, USA, March 7-8, 2023

S. Habet, Y. Roblin, R. M. Bodenstein, S. A. Bogacz, J. Grames, A. Hofler, R. Kazimi, F. Lin, M. Poelker, A. Seryi, R. Suleiman, A. Sy, D. Turner, A. Ushakov, C. A. Valerio-Lizarraga, E. Voutier
Concept of a polarized positron source for CEBAF
13^th International Particle Accelerator Conference (IPAC'22), Bangkok, Thailand, 12-17 June 2022, MOPOTK012

F. Alharthi, L. Bandiera, I. Chaikovska, R. Chehab, J. Diefenbach, O. Khomyshyn, D. Klekots, W. Lauth, A. Mazzolari, V. Mytrochenko, S. Ogur, M. Romagnoni, P. Sievers, M. Soldani, A. I. Sytov, A. Ushakov, S. Wallon, Y. Zhao
Target studies for the FCC-ee positron source
13^th International Particle Accelerator Conference (IPAC'22), Bangkok, Thailand, 12-17 June 2022, WEPOPT054

I. Chaikovska, R. Chehab, V. Kubytskyi, S. Ogur, A. Ushakov, A. Variola, P. Sievers, P. Musumeci, L. Bandiera, Y. Enomoto, Mark J. Hogan, P. Martyshkin
Positron sources: from conventional to advanced accelerator concepts-based colliders
Journal of Instrumentation, Vol. 17 (2022) P05015

A. Ushakov, E. Voutier, C. Le Galliard, S. Habet
Conceptual design of a high power target for the Jefferson Lab positron source
Assemblée Générale du GDR QCD, 23-25 May 2022, Île d'Oléron, France

A. Ushakov, R. Bodenstein, J. Grames, S. Habet, M. Stefani, E. Voutier
Simulations of polarized positron source at Jefferson Lab
French-Ukrainian Workshop - Instrumentation Developments for High Energy Physics, 27-29 October 2021, IJCLab, Orsay, France

K. Alharbi, A. Alrashdi, S. Riemann, G. Moortgat-Pick, A. Ushakov, P. Sievers
Design of photon masks for the ILC positron source
12^th International Particle Accelerator Conference (IPAC'21), 24-28 May 2021, Campinas, Brazil, THPAB041

G. Moortgat-Pick, S. Riemann, P. Sievers and A. Ushakov
Undulator positron source summary
Americas Workshop on Linear Colliders 2020 (AWLC 2020), 19-22 October 2020, SLAC National Accelerator Laboratory, USA

M. Formela, N. Hamann, K. Floettmann, G. Moortgat-Pick, S. Riemann and A. Ushakov
Plasma lenses: possible alternative OMD at the ILC
Talk presented at the International Workshop on Future Linear Colliders (LCWS2019), Sendai, Japan, 28 October - 1 November 2019, arXiv:2003.03138

S. Riemann, P. Sievers, G. Moortgat-Pick and A. Ushakov
Updated status of the undulator-based ILC positron source
Talk presented at the International Workshop on Future Linear Colliders (LCWS2019), Sendai, Japan, 28 October - 1 November 2019, arXiv:2002.10919

K. Alharbi, S. Riemann, A. Alrashdi, G. Moortgat-Pick and A. Ushakov
Energy deposition due to secondary particles in the helical undulator wall at ILC-250GeV
Talk presented at the International Workshop on Future Linear Colliders (LCWS2019), Sendai, Japan, 28 October - 1 November 2019, arXiv:2001.08024

F. Dietrich, G. Moortgat-Pick, S. Riemann, P. Sievers and A. Ushakov
Status of the undulator-based ILC positron source
Talk presented at the International Workshop on Future Linear Colliders (LCWS2018), University of Texas, Arlington, USA, 22-26 October 2018, arXiv:1902.07744

A. Ushakov, S. Riemann, G. Moortgat-Pick, K. Alharbi, K. Aulenbacher, S. Heidrich, P. Heil, Y. Tamashevich
Status of material load experiments at MAMI in Mainz
International Workshop on Future Linear Colliders (LCWS2018), University of Texas, Arlington, USA, 22-26 October 2018

S. Riemann, G. Moortgat-Pick and A. Ushakov
Status of the undulator-based positron source
International Workshop on Future Linear Colliders (LCWS2018), University of Texas, Arlington, USA, 22-26 October 2018

A. Ushakov, S. Riemann and G. Moortgat-Pick
Acceptable peak temperature and thermal stress in Ti6Al4V target of ILC positron source
POSIPOL 2018 Workshop, 3-5 September 2018, CERN, Geneva, Switzerland

S. Riemann, F. Dietrich, G. Moortgat-Pick, A. Ushakov, P. Sievers
Status of the target for the undulator-based positron source
POSIPOL 2018 Workshop, 3-5 September 2018, CERN, Geneva, Switzerland

A. Ushakov
Positron yield calculations for the undulator based source at 250 GeV CM energy
Asian Linear Collider Workshop (ALCW2018), 28 May - 1 June 2018, Fukuoka, Japan

A. Ushakov, G. Moortgat-Pick and S. Riemann
Undulator-based positron source at 250 GeV CM energy with different optical matching devices: pulsed flux concentrator and quarter wave transformer
arXiv:1801.08465, Talk presented at the International Workshop on Future Linear Colliders (LCWS2017), 23-27 October 2017, Strasbourg, France

S. Riemann, F. Dietrich, G. Moortgat-Pick, P. Sievers, A. Ushakov
The ILC positron target cooled by thermal radiation
arXiv:1801.10565, Talk presented at the International Workshop on Future Linear Colliders (LCWS2017), 23-27 October 2017, Strasbourg, France

A. Ushakov, M. Kuriki, T. Takahashi, T. Omori and P. Sievers
Radiation shielding for target area of conventional positron source
Weekly Meeting of the ILC Positron Source Group in Japan, 7 December 2017, KEK, Japan

A. Ushakov, M. Kuriki, T. Takahashi, T. Omori and P. Sievers
Shielding in target area of conventional positron source
Itako Linear Collider Workshop, 27-28 November 2017, Itako, Japan

W. Hillert, G. Moortgat-Pick, A. Ushakov, A. Prudnikava, Y. Tamashevich, S. Riemann, A. Ignatenko, D. Lott, K. Aulenbacher, T. Beiser, P. Heil and V. Tioukine
Target Material Tests at Facilities in Hamburg
11th Annual Helmholtz Alliance Workshop on "Physics at the Terascale", 27-29 November 2017, DESY, Hamburg

A. Ushakov
ILC undulator-based positron source with quarter wave transformer at 250 GeV CM energy
12th International Workshop POSIPOL-2017, 18-21 September 2017, Budker Institute of Nuclear Physics, Novosibirsk, Russia

A. Ushakov
Energy deposition in flux concentrator by undulator photons at 250 GeV center-of-mass energy
Americas Workshop on Linear Colliders 2017 (AWLC17), 26-30 June 2017, SLAC National Accelerator Lab, Menlo Park, USA

A. Ushakov, G. Moortgat-Pick, A. Prudnikava, Y. Tamashevich, K. Aulenbacher, T. Beiser, P. Heil, V. Tioukine, A. Ignatenko, S. Riemann
Material tests for the ILC positron source
8^th International Particle Accelerator Conference (IPAC'17), Copenhagen, Denmark, 14-19 May 2017, TUPAB002 , poster

P. Heil, T. Beiser, K. Aulenbacher, G. Moortgat, A. Ushakov, S. Riemann, A. Ignatenko
High energy density irradiation with the MAMI linac
8^th International Particle Accelerator Conference (IPAC'17), Copenhagen, Denmark, 14-19 May 2017, TUPAB003

A. Ushakov
Impact of photon collimators in undulator on PEDD in FC at 125 GeV e^-
Positron Working Group Meeting, 18 May 2017

A. Ushakov
250 GeV CM design issues
Staging Mini-Workshop, 5 - 7 April 2017, KEK, Japan

A. Ushakov
e⁺ yield and PEDD in FC at 125 GeV e^-, TDR and compact dog-leg for undulator e⁺ source
Positron Working Group Meeting, 15 March 2017

A. Ushakov, S. Riemann, P. Sievers, T. Omori
Solid and gas photon dump
International Workshop on Future Linear Colliders (LCWS2016), 5 - 9 December 2016, Morioka, Iwate, Japan

A. Ushakov, S. Riemann, P. Sievers, T.Omori
Is the solid/Ar-gas photon dump possible?
International Workshop on Future Linear Colliders (LCWS2016), 5 - 9 December 2016, Morioka, Iwate, Japan

F. Dietrich, A. Ignatenko, G. Moortgat-Pick, S. Riemann, A. Ushakov
ILC target experiment at MAMI
International Workshop on Future Linear Colliders (LCWS2016), 5 - 9 December 2016, Morioka, Iwate, Japan

A. Ushakov, S. Riemann
Update of ILC positron source parameters
POSIPOL 2016 Workshop, 14 - 16 September 2016, Laboratoire de l’Accélérateur Linéaire (LAL), University Paris-Sud, Orsay, France

A. Ushakov, S. Riemann, G. Moortgat-Pick
Radiation at photon dump of undulator-based e⁺ source
European Linear Collider Workshop 2016 (ECFALC2016), 30 May - 5 June 2016, Santander, Spain

P. Sievers, A. Ushakov, S. Riemann
Window and dump for the ILC-photon beam
European Linear Collider Workshop 2016 (ECFALC2016), 30 May - 5 June 2016, Santander, Spain

F. Dietrich, A. Ignatenko, G. Moortgat-Pick, S. Riemann, A. Ushakov
Target material tests with the electron beam at the microtron in Mainz
European Linear Collider Workshop 2016 (ECFALC2016), 30 May - 5 June 2016, Santander, Spain

F. Dietrich, A. Ignatenko, S. Riemann, G. Moortgat-Pick, A. Ushakov, P. Sievers
Status: Cooling of the ILC e+ target by thermal radiation
European Linear Collider Workshop 2016 (ECFALC2016), 30 May - 5 June 2016, Santander, Spain

A. Ushakov
Radiation levels in target area of undulator-based positron source
Joint Workshop of CRWG, CFS and Positron, 19 - 20 April 2016, KEK, Japan

A. Ushakov, G. Moortgat-Pick, S. Riemann, A. Ignatenko, F. Dietrich, K. Aulenbacher, V. Tyukin, P. Heil
Stress evaluation at the ILC positron source
DPG Spring Meeting of the Matter and Cosmos Section, 29 February - 4 March 2016, University of Hamburg

A. Ushakov, S. Riemann, G. Moortgat-Pick
Radiation levels in target area of undulator-based positron source
International Workshop on Future Linear Colliders (LCWS2015), Whistler B.C. Canada, 02-06 November 2015

A. Ushakov, S. Riemann, F. Dietrich, P. Sievers, G. Moortgat-Pick
Update on target simulations of the undulator based e⁺ source
POSIPOL 2015 Workshop, Cockcroft Institute, UK, 2-4 September 2015

G. Moortgat-Pick, A. Ushakov, O. Adeyemi, F. Dietrich, K. Flöttmann, S. Riemann
The ILC positron source
European Physical Society Conference on High Energy Physics (EPS-HEP 2015), Vienna, Austria, 22-29 July 2015

A. Ushakov, F. Dietrich, S. Riemann, T. Rublack, P. Sievers
Radiative cooled target for the ILC polarized positron source
6th International Particle Accelerator Conference (IPAC15), Richmond, VA, USA, 3-8 May 2015, TUPWA048

A. Ushakov, G. Moortgat-Pick, F. Dietrich, S. Riemann, P. Sievers
Considerations of material stress under cyclic Load: KEKB experiment for damage of Ti extraction window
Asian Linear Collider Workshop (ALCW2015), 20-24 April 2015, KEK Tsukuba, Japan

F. Dietrich, S. Riemann, P. Sievers, A. Ushakov
Radiative cooling of the ILC positron target
Asian Linear Collider Workshop (ALCW2015), 20-24 April 2015, KEK Tsukuba, Japan

A. Ushakov, F. Dietrich, S. Riemann
Thermal stress induced in solid targets by electron or photon beams
2^nd ANSYS Users Meeting at DESY, 12 February 2015, DESY Hamburg

S. Riemann, F. Staufenbiel, G. Moortgat-Pick, A. Ushakov
Photon collimator system for the ILC positron source
DESY Report: DESY 14-232, Nov 2014, 22 pp., arXiv:1412.2498

A. Ushakov, S. Riemann, P. Sievers
Simulations for the photon target cooled by radiation
POSIPOL 2014 Workshop, 27-29 August 2014, Ichinoseki, Japan

A. Ushakov, G. Moortgat-Pick, S. Riemann, F. Staufenbiel
Optimizing source parameters
Americas Workshop on Linear Colliders 2014 (AWLC14), 12-16 May 2014, Fermilab, Batavia, IL, USA

A. Ushakov, G. Moortgat-Pick, S. Riemann, F. Staufenbiel
ILC polarized positron source at center-of-mass energies of 250 GeV and 1 TeV
EUCARD Workshop "Spin Optimization at Lepton Accelerators", 12-13 February 2014, Mainz

A. Ushakov, G. Moortgat-Pick, S. Riemann, F. Staufenbiel, P. Sievers
Simulations of undulator-based positron source with tungsten-alloy target
International Workshop on Future Linear Colliders (LCWS13), 11-15 November 2013, The University of Tokyo, Japan

A. Ushakov, G. Moortgat-Pick, S. Riemann, F. Staufenbiel
Simulations of the undulator based e⁺ source at 120 GeV
International Workshop on Future Linear Colliders (LCWS13), 11-15 November 2013, The University of Tokyo, Japan

A. Ushakov
Geant4 simulations of conventional positron source
POSIPOL 2013 Workshop, 4-6 September 2013, Argonne National Laboratory, USA

A. Ushakov, G. Moortgat-Pick, S. Riemann, F. Staufenbiel
Simulations of positron source at 120 GeV
European Linear Collider Workshop ECFA LC2013, 27-31 May 2013, DESY, Hamburg

A. Ushakov, V.S. Kovalenko, G.A. Moortgat-Pick, S. Riemann, F. Staufenbiel
Simulations of the ILC positron source at low energies
4th International Particle Accelerator Conference (IPAC13), Shanghai, China, 12-17 May 2013, TUPME003

F. Staufenbiel, S. Riemann, O.S. Adeyemi, V.S. Kovalenko, G.A. Moortgat-Pick, A. Ushakov
Simulation of stress in positron targets for future linear colliders
4th International Particle Accelerator Conference (IPAC13), Shanghai, China, 12-17 May 2013, TUPME006

V. Kovalenko, G.A. Moortgat-Pick, A. Ushakov, S. Riemann, A. Wolski
Spin tracking at the International Linear Collider
4th International Particle Accelerator Conference (IPAC13), Shanghai, China, 12-17 May 2013, TUPME004

A. Ushakov, G. Moortgat-Pick, S. Riemann, W. Liu, W. Gai
Positron source simulations for ILC 1 TeV upgrade
DESY Report: DESY 13-003, Jan 2013, 8 pp., arXiv:1301.1222

A. Ushakov
Polarization issues
International Workshop on Future Linear Colliders (LCWS12), 22-26 October 2012, University of Texas at Arlington, USA

A. Ushakov, G. Moortgat-Pick, S. Riemann, A. Schälicke
ILC positron source modeling up to 1 TeV
POSIPOL 2012 Workshop, 4-6 September 2012, DESY, Zeuthen

V. Kovalenko , O.S. Adeyemi, L.I. Malysheva, G.A. Moortgat-Pick, A. Ushakov, A.F. Hartin, S. Riemann, F. Staufenbiel
Spin tracking simulation of a future International Linear Collider
3rd International Particle Accelerator Conference (IPAC12), New Orleans, Louisiana, USA, 20-25 May 2012, TUPPR001

A. Ushakov, O. S. Adeyemi, V. Kovalenko, L. Malysheva, G. Moortgat-Pick, S. Riemann, F. Staufenbiel, A. Hartin
Simulations of positron polarization in the undulator-based source
3rd International Particle Accelerator Conference (IPAC12), New Orleans, Louisiana, USA, 20-25 May 2012, TUPPR002

L.I. Malysheva, O.S. Adeyemi, V. Kovalenko, G. Moortgat-Pick, A. Ushakov, S. Riemann, F. Staufenbiel, A. Hartin, B. List, N. Walker
The design of spin-rotator with a possibility of helicity switching for polarized positron at the ILC
3rd International Particle Accelerator Conference (IPAC12), New Orleans, Louisiana, USA, 20-25 May 2012, TUPPR003

W. Liu, W. Gai, S. Riemann, A. Ushakov
On the polarization upgrade of ILC undulator-based positron source
3rd International Particle Accelerator Conference (IPAC12), New Orleans, Louisiana, USA, 20-25 May 2012, TUPPR042

F. Staufenbiel, S. Riemann, O.S. Adeyemi, V. Kovalenko, L.I. Malysheva, G. Moortgat-Pick, A. Ushakov
Heat load studies in target and collimator materials for the ILC positron source
3rd International Particle Accelerator Conference (IPAC12), New Orleans, Louisiana, USA, 20-25 May 2012, WEPPD032

F. Staufenbiel, O. S. Adeyemi, V. Kovalenko, G. Moortgat-Pick, L. Malysheva, S. Riemann, A. Ushakov
Heat load and stress studies for an design of the photon collimator for the ILC positron source
Feb 2012, 10 pp., arXiv:1202.5987

V. Kovalenko, G. Moortgat-Pick, S. Riemann, A. Ushakov
Depolarization in the ILC linac-to-ring positron beamline
DESY Report: DESY 12-017, Feb 2012, 7 pp., arXiv:1202.0764

A. Ushakov, O. S. Adeyemi, G. Moortgat-Pick, F. Staufenbiel, S. Riemann
Polarized positrons for the ILC - update on simulations
DESY Report: DESY 12-018, Feb 2012, 11 pp., arXiv:1202.0752

V. Kovalenko, O.S. Adeyemi, A. Hartin, G. Moortgat-Pick, L. Malysheva, S. Riemann, F. Staufenbiel, A. Ushakov
Spin tracking at the ILC positron source
DESY Report DESY 12-019, Feb 2012, 8 pp., arXiv:1202.0751

Tsunehiko Omori, Tohru Takahashi, Sabine Riemann, Wei Gai, Jie Gao, Shin-ichi Kawada, Wanming Liu, Natsuki Okuda, Guoxi Pei, Junji Urakawa, Andriy Ushakov
A conventional positron source for International Linear Collider
Nuclear Instruments and Methods in Physics Research Section A 672 (2012) 52

Tsunehiko Omori, Junji Urakawa, Tohru Takahashi, Shin-Ichi Kawada, Sabine Riemann, Wei Gai, Wanming Liu, Jie Gao, Guoxi Pei, Natsuki Okuda, Andriy Ushakov
The truly conventional positron source for ILC
In "Polarized Positron 2011: Proceedings of the 6th Annual Workshop, Beijing, China, 28-30 August 2011", edited by Wei Gai (Argonne National Lab, USA), World Scientific, December 2012, pp. 98-110

Wanming Liu, Wei Gai, Sabine Riemann, Andriy Ushakov
On the Parameters of International Linear Collider Positron Source
In "Polarized Positron 2011: Proceedings of the 6th Annual Workshop, Beijing, China, 28-30 August 2011", edited by Wei Gai (Argonne National Lab, USA), World Scientific, December 2012, pp. 32-38

A. Ushakov, O. S. Adeyemi, G. Moortgat-Pick, F. Staufenbiel, S. Riemann
Performance simulations/heat stress/shockwave, etc.
ILC Source/RTML/BDS+MDI Technical Baseline Review, 24-27 October 2011, DESY, Hamburg

A. Ushakov, O. S. Adeyemi, G. Moortgat-Pick, F. Staufenbiel, S. Riemann
Depolarization in the ILC linac-to-ring positron beamline
International Workshop on Future linear Colliders (LCWS11), 26-30 September 2011, Granada, Spain

A. Ushakov, O. S. Adeyemi, V. Kovalenko, L. Malysheva, G. Moortgat-Pick, S. Riemann, F. Staufenbiel, A. Hartin, A. Schälicke
Positron source simulations using Geant4
International Particle Accelerator Conference (IPAC'11), San Sebastian, Spain, 4‑9 September 2011, TUPC006

O. S. Adeyemi, V. Kovalenko, L. Malysheva, A. Ushakov, G. Moortgat-Pick, S. Riemann, F. Staufenbiel, A. Schälicke
Evolution of pressure in positron source for future linear e+e− collider
International Particle Accelerator Conference (IPAC'11), San Sebastian, Spain, 4‑9 September 2011, TUPC005

L. Malysheva, O.S. Adeyemi, V. Kovalenko, G. A. Moortgat-Pick, A. Ushakov, S. Riemann, F. Staufenbiel, K. Buesser, A.F. Hartin, N. J. Walker
The luminosity for the ILC travelling focus regime with offsets and angular scans
International Particle Accelerator Conference (IPAC'11), San Sebastian, Spain, 4‑9 September 2011, TUPC004

A. Ushakov, O.S. Adeyemi, G. Moortgat-Pick, F. Staufenbiel, S. Riemann
Polarized positrons for the ILC - update on simulations
POSIPOL 2011 Workshop, 28-30 August 2011, IHEP, Beijing, China

A. Ushakov, O. S. Adeyemi, G. Moortgat-Pick, F. Staufenbiel, S. Riemann
Simulations of heat load and induced stress in target of ILC positron source
ILC Positron Collaboration Meeting, 27 August 2011, IHEP, Beijing, China

O. S. Adeyemi, V. Kovalenko, G. Moortgat-Pick, S. Riemann, A. Schälicke, A. Ushakov
Undulator-based positron source with photon collimator and QWT
2011 Linear Collider Workshop of the Americas, 19-23 March 2011, University of Oregon, Eugene, USA

S. Riemann, A. Schälicke, A. Ushakov
Design and optimization of a polarized positron source for future linear collider using Geant4
19th International Spin Physics Symposium (SPIN2010), Jülich, 27 September – 2 October, 2010, published in Journal of Physics: Conference Series 295 (2011) 012154

A. Ushakov, A. Schälicke, S. Riemann
Simulation of polarized positron sources for linear colliders
Workshop on Sources of Polarized Leptons and High Brightness Electron Beams (PESP2010), Bonn, 21-24 September, 2010, published in Journal of Physics: Conference Series 298 (2011) 012021,

S. Riemann, A. Schälicke, A. Ushakov
Polarized positrons for future linear colliders
Workshop on Sources of Polarized Leptons and High Brightness Electron Beams (PESP2010), Bonn, 21-24 September, 2010, published in Journal of Physics: Conference Series 298 (2011) 012020

A. Schälicke, S. Riemann, A. Ushakov
PPS-Sim. Tools to design and optimize the polarized positron source
Workshop on Spin Simulation Tools, 9-11 November 2010, DESY, Hamburg

A. Ushakov, A. Schälicke, S. Riemann
Simulations of the polarised positron source with PPS-Sim
International Workshop on Linear Colliders (IWLC2010), 18-22 October 2010, CERN, Geneva, Switzerland

A. Ushakov, A. Schälicke, S. Riemann
Conventional source simulations
7^th Positron Source Collaboration Meeting, 15-16 July 2010, DESY, Hamburg

A. Ushakov, A. Schälicke, S. Riemann
Status of positron source simulation in Zeuthen
PosiPol 2010 Workshop, 31 May - 2 June 2010, KEK, Tsukuba, Japan

A. Ushakov, S. Riemann, A. Schälicke
Positron source simulations using Geant4
International Particle Accelerator Conference (IPAC'10), Kyoto, Japan, 23‑28 May 2010, 4095

A. Ushakov, S. Riemann
Geant4 simulations for diagnostics elements in the FLASH dump line
DESY TESLA-FEL Report 2010, TESLA-FEL 2010-02

A. Ushakov, S. Riemann, A. Schälicke
Shielding calculations for the target
6^th ILC Positron Source Collaboration Meeting, 28-30 October 2009, IPPP, Durham, UK

A. Ushakov, S. Riemann, A. Schälicke
PPS-Sim simulations of the source with the AMD
6^th ILC Positron Source Collaboration Meeting, 28-30 October 2009, IPPP, Durham, UK

A. Schälicke, A. Ushakov, S. Riemann
PPS-Sim update
6^th ILC Positron Source Collaboration Meeting, 28-30 October 2009, IPPP, Durham, UK

A. Ushakov, S. Riemann, A. Schälicke
Target shielding studies
2009 Linear Collider Workshop of the Americas, 29 September - 3 October 2009, Albuquerque, New Mexico, USA

S. Riemann, A. Schälicke, A. Ushakov
Lithium lens simulation for ILC positron source
PosiPol 2009 Workshop, 23-26 June 2009, IPNL, Lyon, France

S. Riemann, A. Schälicke, A. Ushakov
Positron source modelling using Geant4
PosiPol 2009 Workshop, 23-26 June 2009, IPNL, Lyon, France

S. Hesselbach, I.R. Bailey, J.L. Fernandez-Hernando, L.J. Jenner, G.A. Moortgat-Pick, S. Riemann, J.H. Rochford, A. Schälicke, A. Ushakov, L. Zang
Positron source target survivability studies
Particle Accelerator Conference (PAC09), Vancouver, Canada, 4-8 May 2009, MO6RFP061

B. Aurand, I. Bailey, C. Bartels, A. Brachmann, J. Clarke, A. Hartin, J. Hauptman, C. Helebrant, S. Hesselbach, D. Kafer , J. List, W. Lorenzon, I. Marchesini, K. Mönig, K.C. Moffeit, G. Moortgat-Pick, S. Riemann, A. Schälicke, P. Schüler , P. Starovoitov, A. Ushakov, U. Velte, J. Wittschen, M. Woods
Beam polarization at the ILC: The physics impact and the accelerator solutions
International Linear Collider Workshop (LCWS08 and ILC08), Chicago, Illinois, USA, 16-20 November 2008, arXiv:0903.2959

S. Riemann, A. Schälicke, A. Ushakov
Frequency of positron helicity reversal
International Linear Collider Workshop (LCWS08 and ILC08), Chicago, Illinois, USA, 16-20 November 2008, arXiv:0903.2366

S. Riemann, A. Schälicke, A. Ushakov, D. Andrienko
Activation and capture simulations
5^th ILC Positron Source Collaboration Meeting, 29-31 October 2008, The Cockcroft Institute, Daresbury Laboratory, UK

S. Riemann, A. Schälicke, A. Ushakov
Positron source performance modelling
EUROTeV Scientific Workshop, 26-28 August 2008, Uppsala University, Sweden

J. A. Clarke, I. R. Bailey, E. Baynham, V. Bharadwaj, T. W. Bradshaw, A. Brummitt, A. Bungau, F. S. Carr, N. A. Collomb, J. Dainton, R. Dollan, W. Gai, J. Gronberg, A. F. Hartin, S. Hesselbach, K. M. Hock, Y. Ivanyushenkov, L. J. Jenner, K. Laihem, A. Lintern, W. Liu, T. Lohse, O. B. Malyshev, L. I. Malysheva, A. A. Mikhailichenko, G. A. Moortgat-Pick, W. T. Piggott, S. Riemann, J. Rochford, N. C. Ryder, A. Schälicke, D. J. Scott, J. C. Sheppard, A. Ushakov, L. Zang
The design of the positron source for the International Linear Collider
European Particle Accelerator Conference (EPAC'08), Genoa, Italy, 23-27 June 2008, 1915

G. Moortgat-Pick, I. R. Bailey, D. P. Barber, E. Baynham, A. Birch, T. Bradshaw, A. Brummitt, S. Carr, J. A. Clarke, P. Cooke, J. B. Dainton, T. Hartin, L. J. Jenner, A. Lintern, L. I. Malysheva, O. B. Malyshev, J. Rochford, S. Riemann, A. Schälicke, P. Schmid, D. J. Scott, A. Ushakov, Y. Ivanyushenkov
Challenge of polarized beams at future colliders
Journal of Physics: Conference Series 110 (2008) 112004

B. Aurand, I. Bailey, C. Bartels, G. Blair, A. Brachmann, J. Clarke, L. Deacon, V. Duginov, A. Ghalumyan, A. Hartin, J. Hauptman, C. Helebrant, S. Hesselbach, D. Kafer, J. List, W. Lorenzon, A. Lyapin, I. Marchesini, R. Melikian, K. Mönig, K.C. Moffeit, G. Moortgat-Pick, N. Muchnoi, V. Nikoghosyan, S. Riemann, A. Sailer, A. Schälicke, H.J. Schreiber, P. Schüler, P. Starovoitov, E. Torrence, A. Ushakov, U. Velte , M. Viti, G. Weiglein, J. Wittschen, M. Woods
Executive summary of the workshop on polarisation and beam energy measurements at the ILC
Workshop on Polarization and Energy measurements at the ILC, Zeuthen, Germany, 9‑11 April 2008, arXiv:0808.1638

S. Riemann, A. Schälicke, A. Ushakov
Design simulations - Zeuthen
4^th ILC Positron Source Collaboration Meeting, 7‑9 April 2008, Zeuthen, Germany

A. Schälicke, G. Alexander, R. Dollan, K. Laihem, T. Lohse, S. Riemann, P. Starovoitov, A. Ushakov
Study on low-energy positron polarimetry
Pramana - Journal of Physics 69 (2007) 1171

H. Lyberis, S. Riemann, A. Schälicke, A. Ushakov
Geant4 simulations for ILC positron source
3^rd ILC Positron Source Collaboration Meeting, 17-19 September 2007, Argonne National Laboratory, Chicago, USA

A. Ushakov, S. Riemann, A. Schälicke
Polarized positron production and tracking at the ILC positron source
Particle Accelerator Conference (PAC'07), Albuquerque, New Mexico, USA, 25-29 June 2007, 2742, talk

A. Ushakov, S. Riemann
Radiation damage of the ILC positron source target
International Linear Collider Workshop (LCWS07 and ILC07), Hamburg, Germany, 30 May - 3 Jun 2007, 822, arXiv:0712.2343 , talk

A. Ushakov, S. Riemann
Heat deposition and activation of target and capture system
2^nd ILC Positron Source R&D Meeting, 31 January - 2 February 2007, IHEP, Beijing, China

A. Ushakov, S. Riemann
Target issues for different undulator parameters
European LC Workshop, 8-9 January 2007, Daresbury Laboratory, UK

A. Ushakov, S. Riemann
Radiation and target aspects
International Linear Collider Workshop, 6-10 November 2006, Valencia, Spain

A. Ushakov, S. Riemann
Target damage simulation
ILC Positron Source Group Meeting, 27-29 September 2006, Rutherford Appleton Laboratory, Oxford, UK

A. Ushakov, S. Riemann
Positron source activation
ILC Positron Source Group Meeting, 27-29 September 2006, Rutherford Appleton Laboratory, Oxford, UK

A. Ushakov, E. Elsen, K. Flöttmann, S. Riemann, K. Sanosyan
Radiation levels and activation at the ILC positron source
European Particle Accelerator Conference (EPAC'06), Edinburgh, UK, 26‑30 June 2006, 2478,

K. Laihem, A. Schälicke, S. Riemann, A. Ushakov, R. Dollan, T. Lohse
Study on low-energy positron polarimetry
European Particle Accelerator Conference (EPAC'06), Edinburgh, UK, 26‑30 June 2006, 2475

A. Jakob, H. Klein, U. Ratzinger, A. Ushakov, K. Volk
First optical beam profile measurements on an H⁻-source in Frankfurt
Nuclear Instruments and Methods in Physics Research Section A 536 (2005) 1

A. Ushakov, M. Droba, N. Joshi, U. Ratzinger
High current beams up to 150 keV at Frankfurt
GSI Scientific Report 2004 320

A. Ushakov, K. Volk, H. Klein, U. Ratzinger
Design studies for a H⁻ ion extraction system
Review of Scientific Instruments 75 (2004) 1783

R. A. Carrigan, J. Freudenberger, S. Fritzler, H. Genz, A. Richter, A. Ushakov, A. Zilges, J. P. F. Sellschop
Electron channeling radiation experiments at very high electron bunch charges
Physical Review A 68 (2003) 062901

D. Pugachov, J. They, G. Buschhorn, R. Kotthaus, V. L. Morokhovskii, H. Genz, A. Richter, A. Ushakov
Polarimetry of coherent polarization radiation
Nuclear Instruments and Methods in Physics Research Section B 201 (2003) 55

O. Meusel, A. Jakob, J. Pozimski, U. Ratzinger, A. Ushakov
Low energy beam transport development at IAP
GSI Scientific Report 2003 261

O. Meusel, J. Pozimski, U. Ratzinger, A. Ushakov
Low energy beam transport using Gabor lenses
GSI Scientific Report 2002 197 http://repository.gsi.de/record/53529/files/GSI-Report-2003-1.pdf

D. Pugachov, G. Buschhorn, R. Kotthaus, V. L. Morokhovskii, J. They, H. Genz, A. Richter, A. Ushakov
Polarization properties of coherent polarization radiation of relativistic electrons in a crystal
Physics Letters A 286 (2001) 70

Richard A. Carrigan, J. Freudenberger, S. Fritzler, H. Genz, A. Richter, A. Ushakov, A. Zilges, J. P. F. Sellschop
Probing toward the solid state plasma accelerator frontier using channeling radiation measurements at the Fermilab A0 photoinjector
18^th Advanced ICFA Beam Dynamics Workshop on Quantum Aspects of Beam Physics, Capri, Italy, 15–20 October 2000, ed. Pisin Chen, World Scientific, May 2002, pp. 424-432. FERMILAB-Conf-01/029-E March 2001

S. V. Dudin, A. V. Zykov, A. V. Ushakov, V. I. Farenik
Equilibrium states of an ion-beam plasma with magnetized electrons at low pressures
Technical Physics Letters 24 (1998) 180

S. V. Dudin, A. V. Ushakov, V. I. Farenik
Features of application of electric probes in crossed non-uniform E and H fields
Proceedings of the IEEE International Conference on Plasma Science (ICOPS'96), Boston, Massachusetts, USA (1996) 117

S. V. Dudin, A. V. Zykov, A. V. Ushakov, V. I. Farenik
Electron distribution function of an ion-beam plasma in nonuniform EH fields
Technical Physics Letters 22 (1996) 969

A. V. Ushakov, V. I. Farenik
Probe measurements of the parameters of the electron component in the accelerators with closed drift of electrons
Proceedings of the IEEE International Conference on Plasma Science (ICOPS'95), Madison, Wisconsin, USA (1995) 225

S. V. Dudin, A. V. Zykov, A. V. Ushakov, V. I. Farenik
About the two regimes of the discharge in crossed EH fields at low pressure
Proceedings of the IEEE International Conference on Plasma Science (ICOPS'95), Madison, Wisconsin, USA (1995) 147

S. V. Dudin, A. V. Zykov, A. V. Ushakov
Electron dynamics in an axially nonuniform EH anode sheath of a low-pressure discharge
Technical Physics Letters 21 (1995) 54

S. V. Dudin, A. V. Zykov, A. V. Ushakov
Dynamics of electrons in anode layer of Hall-type ion source
Proceedings of the IEEE International Conference on Plasma Science (ICOPS'94), Santa Fe, USA (1994) 175