FACET-II Science Workshop 2017

Name:

FACET-II Science Workshop 2017

Date:

October 17-20, 2017

Location:

SLAC National Accelerator Laboratory, Kavli Auditorium

Overview:

FACET-II is a new user facility that will provide unique capabilities to develop advanced acceleration and coherent radiation techniques with high-energy electron and positron beams. FACET-II provides a major upgrade over current FACET capabilities and the breadth of the potential research program will make it truly unique.

A baseline design for FACET-II has been established that progressively increases capabilities in three distinct stages and is captured in the FACET-II CDR and TDR​. Stage one completes a new photoinjector at Sector 10 and re-establishes operations with high-energy high-brightness electron beams. Stage two will add a new positron damping ring system and allow user runs with high-current positron beams. Stage three will upgrade the chicane in sector 20 for simultaneous delivery of positrons and electrons to the experimental area.

By offering bunch charge ranging from pC to nC, emittance from nm to microns, electrons and positrons, single and double bunches, tailored current profiles of up to nearly 100kA and energy up to 10GeV FACET-II provides experimental capabilities unparalleled anywhere in the world. By leveraging the additional infrastructure afforded by SLAC’s laser group, the FACET laser systems provide multi-terawatt peak powers with state of the art synchronization approaching 10fs.

The FACET-II team is organizing the third of a series of workshops to discuss the scientific opportunities of this new facility, and refine the technical requirements to ensure maximum impact during early operations and into the future. The focus of the current workshop is to asses and chart the development of key technologies needed to to execute the envisioned FACET-II science program.

 

Agenda:

OverviewWorkshop IntroductionMark HoganSLAC
OverviewFACET-II Project UpdateVitaly YakimenkoSLAC
OverviewFACET-II Capabilities: e-, e+, two-bunches, sailboat: 
extreme peak current, non-neutral fireballs etc
Glen WhiteSLAC
OverviewHigh Level Summary of Anticipated Experimental Program @ FACET-IIMark HoganSLAC
Emittance preservation & 
pump depletion
Energy doubling with emittance preservation and pump depletionChan JoshiUCLA
Emittance preservation & 
pump depletion
Plasma sources with density ramps 
(Li oven + apertured controlled gas pressure)
Ken MarshUCLA
Emittance preservation & 
pump depletion
Differential pumping: IP integration & performanceChristine ClarkeSLAC
Emittance preservation & 
pump depletion
Plasma source with optically generated density rampsMike LitosUC Boulder
Emittance preservation & 
pump depletion
Emittance measurements: Butterfly technique and 
implications for spectrometer
Brendan O'SheaSLAC
Emittance preservation & 
pump depletion
FACET-II diagnostics overviewNate LipkovitzSLAC
Emittance preservation & 
pump depletion
Novel diagnostics and beam phase space recoveryClaudio EmmaSLAC
Emittance preservation & 
pump depletion
Expected beam performance with stability analysisGlen WhiteSLAC
Emittance preservation & 
pump depletion
Benefits of a zig-zag compression design for FACET-IIYichao JingBNL
Transverse Wakefields with 
strong beam loading
Emittance vs Loading (introduction, theory with high level simulation results)Sergei NageitsevFNAL
Transverse Wakefields with 
strong beam loading
Theoretical progress (multi-modal analysis)Xinlu XuUCLA/SLAC
Transverse Wakefields with 
strong beam loading
Detailed computational discussion and next steps in understanding emittance vs. loading in PWFAWeiming AnUCLA
Transverse Wakefields with 
strong beam loading
Lessons learned from FACET and path forward for FACET-II experiment
(offset knobs & what we will see on spectrometer)
Erik AdliU. Oslo
Transverse Wakefields with 
strong beam loading
Diagnostic requirements for witness bunch offsets (r,z)Mike LitosUC Boulder
Transverse Wakefields with 
strong beam loading
Calculation of wakefields for plasma-wakefield acceleratorsGennady StupakovSLAC
Positrons, hollow channels 
and dielectrics
Hollow channel longitudinal & transverse wakesCarl Andreas LindstromUniversity of Oslo
Positrons, hollow channels 
and dielectrics
Dielectric Wakefield Accelerators: status & what’s nextGerard AndonianUCLA
Positrons, hollow channels 
and dielectrics
Analysis of BBU in compact structure-based wakefield accelerators and a suppression methodStanislav BaturinUniversity of Chicago
Positrons, hollow channels 
and dielectrics
Saturation of the beam-hosing instability in quasi-linear plasma-wakefield acceleratorsRemi LeheLBNL
Positrons, hollow channels 
and dielectrics
Positron PWFA - what we’ve learned and what’s nextSebastien CordeEcole Polytechnique
Positrons, hollow channels 
and dielectrics
Electron Driven Positron Acceleration with the Sailboat ChicaneWeiming AnUCLA
Positrons, hollow channels 
and dielectrics
Non-neutral fireball and possibilities for accelerating positrons with plasmaJorge VieraIST
Injection experimentsIonization injection - what we’ve learned and next stepsNavid VafaeiStonybrook University
Injection experimentsDensity Downramp Injection - Prospects for Ultra-high Brightness BeamsXinlu XuUCLA/SLAC
Injection experimentsTrojan Horse and Plasma Torch Injection - lessons learned and next stepsBernhard HiddingUniversity of Strathclyde
Injection experimentsPlans @ DESYJens OsterhoffDESY
Injection experimentsLow emittance measurements:100nm from betatron spectrumNathan MajernikUCLA
Plasma Accelerator 
based FELs
Status of task force effortsMark HoganSLAC
Plasma Accelerator 
based FELs
Realizing an FEL from a Plasma Accelerator - Progress and Plans at LBNLJeroen VanTillborgLBNL
Ion MotionIon motion effects on emittanceWeiming AnUCLA
Ion MotionIon motion effects on energy spreadXinlu XuUCLA/SLAC
Ion MotionEmittance preservation in plasma-based accelerators with ion motionCarlo BenedettiLBNL
Ion MotionLong term wake evolution: heating & ion wakesJorge VieraIST
Ion MotionImaging of beam-induced plasma structures: FACET and FACET-IIMike DownerUT Austin
Ion MotionTeV/m in PlasmasJames RosenzweigUCLA
Simulation CodesQuickPICWeiming AnUCLA
Simulation CodesOSIRISWarren MoriUCLA
Simulation CodesWarpX & ExascaleJean LucVayLBNL
Simulation CodesVSIMJohn CaryUC Boulder & TechX
Simulation Codes8 Years of Beam-Driven Wakefield Simulation
-- ​​​​​lessons learned, reduced models, and future plans
David BruhwilerRadiasoft
New Directions 
@ FACET-II
Active plasma lenses – limitations on beam energy/density and aberrationsJan-Hendrik RöckemanDESY
New Directions 
@ FACET-II
High Field QED enabled by 100TW + 15GeVDavid ReisSLAC
New Directions 
@ FACET-II
High Fields: compressed 10GeV+300MeV—> 100GeV/100GeVSebastian MeurenPrinceton University
New Directions 
@ FACET-II
High Fields: computational challengesThomas GrismayerIST
New Directions 
@ FACET-II
Laser upgrade options: >100TW, transport and quality improvementAlan FrySLAC
New Directions 
@ FACET-II
Laboratory Astrophysics studies with electron-positron beams at FACET-IIFrederico FiuzaSLAC
New Directions 
@ FACET-II
Material studies with compressed electron & positron beams at FACET-IIIoan TudosaUniversity of Pennsylvania
cartoon of students in classroom "Mr Hogan, may i be excused? My brain is full."
aerial photo of the linear accelerator
Participants
Last NameFirst NameInstitution
AdliErikUniversity of Oslo
AllenJamesStanford University/SLAC
AnWeimingUCLA
AndonianGerardUCLA
BaturinStanislavThe University of Chicago
BaxevanisPanagiotis 
BenedettiCarloLawrence Berkeley National Laboratory
BlaclardGuillaumeLawrence Berkeley National Laboratory
BruhwilerDavidRadiaSoft LLC
CaryJohnUniversity of Colorado and Tech-X Corporation
ClarkeChristineSLAC
ClaytonChrisUCLA
CordeSebastienEcole Polytechnique
CowanBenjaminTech-X Corporation
D'ArcyRichardDESY
EmmaClaudioSLAC National Accelerator Laboratory
EnglandJoelSLAC
EsareyEricLBNL
FrischJosefSLAC
GreenSelinaSLAC
GrismayerThomasGoLP/Instituto de Plasmas e Fusao Nuclear, Universidade de Lisboa
HemsingErikSLAC
HigueraAdamUniversity of Colorado at Boulder
HoganMarkSLAC
HuangZhirongSLAC
JingYichaoBNL
JoshiChandrashekharUCLA
LeheRemiLBNL
LenLKDOE
LipkowitzNateSLAC
LitosMichaelUniversity of Colorado Boulder
LuWeiTsinghua University
MajernikNathanUCLA
MarshKennethUCLA EE Dept
MermingaLiaSLAC
MeurenSebastianDepartment of Astrophysical Sciences, Princeton University
MurokhAlexRadiaBeam Technologies, LLC.
NagaitsevSergeiFermilab/UChicago
NgCho-KuenSLAC National Accelerator Laboratory
O'SheaBrendanSLAC
OsterhoffJensDESY
PellegriniClaudioSLAC
PeskinMichaelSLAC
RaubenheimerTorSLAC
ReisDavidStanford PULSE Institue
RoeckemannJan-HendrikDESY
RosenzweigJamesUCLA
RyneRobertLBNL
SchroederCarlLBNL
SeemanJohnSLAC
SeryiAndreiJohn Adams Institute
SiciakAntoninEcole Polytechnique
StoreyDougUniversity of Victoria
StupakovGennadySLAC
SutherlandAndrewSLAC / University of Strathclyde
ThévenetMaxenceLawrence Berkeley National Laboratory
TudosaIoanUPenn
Vafaei-NajafabadiNavidStony Brook University
van TilborgJeroenLBNL
VayJean-LucLBNL
VieiraJorgeInstituto Superior Técnico
WalzDieterSLAC
XuXinluUCLA/SLAC
YakimenkoVitalySLAC
YockyJerrySLAC FACET-II
YuSiyiEcole Polytechnique
ZholentsAlexanderArgonne National Laboratory