Second Topical Workshop on Instabilities, Impedance and Collective Effects (TWIICE 2)

8 Feb 2016, 08:15 → 10 Feb 2016, 17:35 Europe/London

The Garden Room (The Cosener's House)

We are pleased to announce that a second Topical Workshop on Instabilities, Impedance and Collective Effects will be organized by John Adams Institute and Diamond Light Source on the 8th, 9th and 10th February 2016 as a sub-series of Low Emittance Rings (LOWεRING) workshops.

The aim of the workshop is to bring together experts from the scientific community working on collective beam instabilities and related subjects for low emittance machines. This community includes light source storage rings, damping rings, test facilities for linear colliders, B‐factories and future e+/e- circular colliders.

The theme will be collective effects and their potential limitations/remedies on the performance of running and future low emittance lepton rings.

Participants will benefit from the experience of colleagues who have studied such effects theoretically and experimentally, and have developed and operated countermeasures.

For more information please visit:
http://www.diamond.ac.uk/Home/Events/2016/TWIICE-2.html

Monday, 8 February

08:15 → 08:45 Registration

08:45 → 09:00 Intro

08:50 Welcome

Speaker: Prof. Richard Walker (Diamond Light Source)

1TWIICE WelcomeRichard.pdf

1TWIICE WelcomeRichard.pptx

08:55 Charge

Speaker: riccardo bartolini (Diamond Light Source and John Adams Institute)

RB_intro.pdf

RB_intro.ppt

09:00 → 13:05 Theory

09:00 Shortly it will be fifty, but it doesn't look like it

Speaker: Vittorio Vaccaro (Universita e INFN, Napoli (IT))

Vaccaro_Oxford12.pdf

Vaccaro_Oxford12.pptx

09:45 Efficiency of feedbacks and Landau damping for low-emittance bunches

Speaker: Alexey Burov (Fermi National Accelerator Lab. (US))

Oxford_LowEmittanceTalk.pdf

10:20 New results in theory of CSR wakefields

Speaker: Gennady Stupakov (S)

TWICEII_new_resulst_CSR_wake.pdf

10:55 Coffee break

11:25 Theoretical results for the CSR-driven instability with negative momentum compaction factor

Speaker: Dr Peter Kuske (Bessy II)

TWIICE_II_Peter_Kuske_talk.pdf

TWIICE_II_Peter_Kuske_talk.ppt

11:50 Two particle model for studying the effects of space-charge force on strong head-tail instabilities

Speaker: Yong Ho Chin (KEK)

2pm.pdf

12:15 Comparison of “quasi instantaneous” measurements of bursting thresholds with bunched beam theory

Speaker: Ms Miriam Brosi (KIT)

2016-02_TWIICE_mbrosi.pdf

12:40 Operating synchrotron light sources with a high gain free electron laser

Speaker: Simone Di Mitri (Elettra Sincrotrone Trieste)

TWIICE2-DiMitri.pdf

TWIICE2-DiMitri.pptx

13:05 → 14:30 Lunch break

14:30 → 18:05 Simulation

14:30 Review on collective effects

Speaker: Dr Karl Bane (SLAC)

Bane_collective_ler.pdf

15:05 Overview of collective effects for the ESRF upgrade

Speaker: Simon White (ESRF)

SWHITE_TWIICE_2016.pdf

SWHITE_TWIICE_2016.pptx

15:30 Impedance and single-bunch instabilities for the APS upgrade

Speaker: Mr Ryan Lindberg (APS)

TWIICE2_Lindberg2-2016.pdf

15:55 Analysis of single- and multi-bunch collective effects in NSLS-II

Speaker: Gabriele Bassi (Brookhaven National Laboratory)

BASSI_TWIICE.pdf

16:20 Coffee break

16:50 Progress on macro-particle simulations of fast beam ion instabilities in the framework of the PyHEADTAIL code

Speaker: Lotta Mether (CERN)

twiice_20160208_fastion.pdf

twiice_20160208_fastion.pptx

17:15 Wakefield Code ECHO: Algorithms and Applications

Speaker: Dr Igor Zagorodnov (DESY)

Zagorodnov_ECHO_APPs.pdf

Zagorodnov_ECHO_APPs.pptx

17:40 A Parallelized Vlasov-Fokker-Planck Solver for Desktop PCs

Speaker: Mr Patrik Schoenfeldt (KIT)

2016-02-09_TWIICE_pschoenfeldt.pdf

18:05 → 18:30 Discussion

18:30 → 20:00 Welcome drinks and buffet

Tuesday, 9 February

09:00 → 12:50 Simulation

09:00 The impedance of NEG coating and effects of its thickness

Speaker: Yong Ho Chin (KEK)

NEG2.pdf

09:25 NEG properties characterization at ultra-high frequencies

Speaker: Eirini Koukovini Platia (Diamond)

Koukovini_TWIICE2_NEG.pdf

09:50 Instability studies in the CLIC damping rings including radiation damping

Speaker: Andrea Passarelli (Technische Universitaet Darmstadt (DE))

Andrea Passarelli - TWIICE 2 workshop V4.pptx

10:15 Instabilities studies at MAXIV

Speaker: Dr Francis Cullinan (SOLEIL)

TWIICE2_skripka.pdf

10:40 Coffee break

11:10 Calculation of Coupled Bunch Effects for BESSY VSR

Speaker: Martin Ruprecht (Helmholtz-Zentrum Berlin (HZB))

Martin_Ruprecht_TWIICE2.pdf

11:35 Simultaneous simulation of single- and multi-bunch collective effects for the APS upgrade

Speaker: Dr Michael Borland (Argonne National Laboratory)

Borland-TWIICE-2016.pdf

12:00 Study of resistive wall induced microwave instability for SLS-2

Speaker: Haisheng Xu (PSI)

TWIICE2_2016_HaishengXu.pdf

12:25 Latest studies on the stabilization mechanisms of beam coherent motions induced by harmonic cavities

Speaker: Dr Francis Cullinan (SOLEIL)

Cullinan_TWIICEII.pdf

Cullinan_TWIICEII.pptx

12:50 → 14:15 Lunch break

14:15 → 18:05 Diagnostics and instrumentation

14:15 Beam dynamics meets diagnostics

Speaker: Giuliano Franchetti

Twiice2_G.Franchetti.pdf

Twiice2_G.Franchetti.pptx

14:40 Longitudinal bunch-by-bunch feedback at DLS

Speaker: Guenther Rehm (Diamond Light Source)

TWIICE2_Longitudinal_BBFB_at DLS.pdf

TWIICE2_Longitudinal_BBFB_at DLS.pptx

15:05 Triangle and concave pentagon electrodes for an improved broadband frequency response of stripline beam position monitors

Speaker: Yong Ho Chin (KEK)

Electrode.pdf

15:30 Bunch-by-bunch feedback: advanced control and diagnostic techniques

Speaker: Dmitry Teytelman (SLAC)

dt_twiice_2016.pdf

15:55 Coffee Break

16:25 Progress on intra-bunch feedback for the SPS - beam measurements and dynamics with feedback

Speaker: John Fox

Progress on intra bunch feedback

16:50 Experimental investigations of CSR instabilities at SOLEIL: recent results using high-repetition rate electro-optical sampling

Speaker: Dr Serge Bielawski (LILLE)

Bielawski_talk.pdf

17:15 Diagnostics for collective effect studies at ESRF

Speaker: Eric PLOUVIEZ (ESRF)

TWIICE2EricPlouviez.pdf

17:40 Investigation of turn-by-turn micro-bunch instabilities using an ultra-fast Schottky barrier diode detector array

Speaker: Aiveen Finn (Royal Holloway, University of London)

AiveenFinn_9Feb2016_TWIICE.pdf

18:30 → 22:30 Workshop dinner

19:00 Departure for Trinity College

19:30 Reception drinks

20:00 Dinner at Trinity College

Wednesday, 10 February

09:00 → 10:45 Facility reports

09:00 Impedances and collective effects at Elettra

Speaker: Emanuel Karantzoulis (Elettra - Sincrotrone Trieste)

Elettra_impedances_instabilities.pdf

Elettra_impedances_instabilities.pptx

09:25 Collective effects in SOLEIL

Speaker: Ryutaro Nagaoka (Synchrotron SOLEIL)

Nagaoka_FacilityTalk_SOLEIL.pdf

Nagaoka_FacilityTalk_SOLEIL.pptx

09:50 Impedance issues in KEKB and SuperKEKB

Speaker: Dr Demin Zhou (KEK)

Impedance_issues_dmzhou_20160208.pdf

10:15 Coffee break

10:45 → 16:00 Measurements and simulations

10:45 Modeling of the single bunch detuning at ALBA

Speaker: Thomas Guenzel (CELLS/ALBA)

Gunzel_TWIICE_Oxford3.pdf

Gunzel_TWIICE_Oxford3.ppt

11:10 Simultaneous detection of longitudinal and transverse signatures of CSR instabilities at ANKA

Speaker: Benjamin Kehrer (Karlsruhe Institute of Technology)

2016_02_10_Benjamin_Kehrer.pdf

11:35 Multibunch instabilities at DLS

Speaker: riccardo bartolini (Diamond Light Source and John Adams Institute)

RB_Abingdon_2016_02_09.pdf

RB_Abingdon_2016_02_09.pptx

12:00 Experimental and numerical studies at SOLEIL on incoherent tune shifts

Speaker: Ryutaro Nagaoka (Synchrotron SOLEIL)

BRUNELLE_PASCALE_TWIICE_2_February_2016.pdf

BRUNELLE_PASCALE_TWIICE_2_February_2016.pptx

12:25 Lunch

13:50 Single bunch instabilities at DLS: experimental and simulation studies

Speaker: Eirini Koukovini Platia (Diamond)

Koukovini_SingleBunch_TWIICE2.pdf

Koukovini_SingleBunch_TWIICE2.ppt

14:15 First time observed radiation effects for protons in LHC

Speaker: Giovanni Iadarola (CERN)

006_twiice2_GI.pdf

006_twiice2_GI.pptx

14:40 Pushing the space charge limit in the CERN LHC injectors

Speaker: Hannes Bartosik (CERN)

2016.02.09_LHCinjectors_space_charge_TWIICE.pdf

2016.02.09_LHCinjectors_space_charge_TWIICE.pptx

15:05 Ion effects in the APS injector and storage ring

Speaker: Dr Joseph Calvey (APS)

Calvey_TWIICE2.pdf

Calvey_TWIICE2.ppt

15:30 Coffee break

16:00 → 17:15 Discussions and summaries

16:00 Summary on Theory session

Speaker: Dr Karl Bane (SLAC)

Summary_Theory_Session_Bane.docx

Summary_Theory_Session_Bane.pdf

16:15 Summary on Simulation I session

Speaker: Ryutaro Nagaoka (Synchrotron SOLEIL)

Summary_SimulationI_Nagaoka.pdf

Summary_SimulationI_Nagaoka.pptx

16:30 Summary on Simulation II session

Speaker: Giovanni Rumolo (CERN)

Summary_SimulationII_Rumolo.pdf

Summary_SimulationII_Rumolo.pptx

16:45 Summary on Diagnostics and Instrumentation

Speaker: Peter Kuske (HZB, Humboldt-innovation GmbH)

Summary_Diagnostics_and_Instrumentation_PKuske.pdf

Summary_Diagnostics_and_Instrumentation_PKuske.ppt

17:00 Summary on Facility reports and first part of Measurements and Simulations sessions

Speaker: Benoit Salvant (CERN)

Summary_Facilities_Meas&Sim_BSalvant.pdf

Summary_Facilities_Meas&Sim_BSalvant.pptx

17:15 → 17:25 TWIICE 2 photos

Convener: Eirini Koukovini Platia (Diamond)

17:15 Cosener's TWIICE 2 photos

TWIICE2-photo.jpg

17:20 Trinity College Dinner

TWIICE2_TrinityCollege_dinner.jpg