Photocathode Physics for Photoinjectors 2018

15 Oct 2018, 08:00 → 17 Oct 2018, 19:20 US/Mountain

Pueblo Ballroom (Hilton-Buffalo Thunder)

Nathan Moody (Los Alamos National Laboratory)

Monday, 15 October

08:00 Registration and Coffee

Welcome and Overview

1 Welcome

Speaker: Dr Nathan Moody (LANL)

2 Overview of Photocathode Physics

Ivan Bazarov

Speaker: Dr Ivan Bazarov (Cornell University)

3 Overview of Photocathode Applications

Speaker: Dr John Lewellen (LANL)

10:00 Break

Session 2: Application Oriented Research: Low Average Current: Session 3: Application Oriented Research: FEL

4 Review of requirements and challenges for UED/UEM

Speaker: Dr Renkai Li (SLAC)

5 Spatio-temporal quantum limits forUED/UEM from MTE

Speaker: Dr Jared Maxon (Cornell University)

6 <10 meV MTE from Cu

Speaker: Dr Siddharth Karkare (Arizona State University)

7 Laser-triggered, high-coherence electron emitters for femtosecond pulses generation in high-field environments

8 Nanocrystalline diamond cathodes

9 Workshop Discussion

12:15 Working lunch: discussion session (lunch provided)

Session 3: Application Oriented Research: FEL

10 Review of requirements and challenges for FEL

Speaker: Dr Bruce Dunham (SLAC National Accelerator Laboratory)

11 Cathodes for Swiss FEL

Speaker: Dr Romain Ganter (Paul Scherrer Institut)

12 GaN, n-type and 2-photon pump probe studies

Speaker: Dr Christoper Pierce (Cornell University)

13 Measurements of physical and chemical roughness of alkali-antimonides

Speaker: Dr William DeBenedetti (Cornell University)

14 Increase of intrinsic emittance by multiphoton photoemission

Speaker: Dr Rui Zhu (Peking University)

15 Workshop Discussion

16:15 Break

Session 4: Application Oriented Research: Spin Polarized Sources

16 Source requirements and polarization measurements at different energies

17 Absorption enhanced nanostructured GaAs

Speaker: Dr Shukui Zhang (Jefferson Lab)

18 High average current at CEBAF

Speaker: Dr Riad Suleiman (Jefferson Laboratory)

19 BNL activiites on spin polarized sources

Speaker: Dr Wei Liu (Brookhaven National Laboratory)

20 KEK activities on spin polarized sources

21 Improving lifetime of GaAs phtocathode using CsTe on GaAs

Speaker: Dr Luca Cultrera (Cornell University)

22 Spin polarized microscopy

Speaker: Dr Makoto Kuwahara (Nagoya University)

23 SPLEEM

24 Spin filters based photocathode

25 Workshop Discussion

19:21 Poster Session and Networking Reception, Vista A and B Rooms

Tuesday, 16 October

08:00 Coffee

08:25 Welcome and Announcements

Session 5: Application Oriented Research: High Average Current

26 Review of requirements and challenges

27 Cs2Te growth physics

Speaker: Dr Mengjia Gaowei (Brookhaven National Laboratory)

28 Cathode thermal decomposition

Speaker: Dr John Smedley (Brookhaven National Laboratory)

29 Capsule Cathodes

Speakers: Dr Jeffrey DeFazio (PHOTONIS), Dr Luca Cultrera (Cornell University)

30 Workshop Discussion

10:15 Break

Session 6: Application Oriented Research: Cathode Design

31 Review of requirements and challenges for holistic cathode design

Speaker: Dr Dave Dowell (Self)

32 Blade cathodes

33 Ultra-thin cathodes

Speaker: Dr Linda Spentzouris (Illinois Institute of Technology (IIT))

34 Etalon Photocathodes

Speaker: Dr Anna Alexander (University of California-San Diego)

35 2D photocathode coatings

Speaker: Dr Enrique Batista (Los Alamos National Laboratory)

36 Cathode surface layers for emittance improvement

37 Workshop Discussion

12:30 Lunch (on own)

Session 7: Operations and Demonstrations - Normal conducting

38 Space charge dominated photoemission from Cs2Te photocathodes in an L-band NC RF gun at PITZ

Speaker: Dr Ye Chen (DESY)

39 Photocathode preparation, characterization, and fundamental study using L-band NCRF guns at the AWA facility

Speaker: Dr Jiahang Shao (Argonne National Laboratory)

40 APEX

41 PEGASUS

42 IHEP

43 Shanghai

44 Tsinghua

45 Workshop Discussion

15:50 Break

Session 8: Operations and Demonstrations - Superconducting & DC

46 Cathode performance for electron cooling

Speaker: Dr Mengjia Gaowei (Brookhaven National Laboratory)

47 Cornell DC cryogun

Speaker: Dr William Li (Cornell University)

48 BerlinPro

Speaker: Dr Julius Kuehn (Helmholtz-Zentrum Berlin)

49 Jlab magnetized gun

Speaker: Dr Md Abdullah Mamun (Jefferson Lab)

50 PKU

Speaker: Dr Huamu Xie (PKU)

51 Workshop Discussion

17:50 Break

18:05 Catered Dinner and Evening Presentation, Vista A and B Rooms

Wednesday, 17 October

08:00 Coffee

08:25 Welcome and Announcements

Session 9: Theory and Computation

52 Review of requirements and challenges

53 High intensity laser & photoemission / Laser heating limits

Speaker: Dr Jai Kwan Bae (Cornell University)

54 Tunneling time

Speaker: Dr Luca Castiglioni (University of Zurich, Switzerland)

55 Density Functional Theory and Surfaces

Speaker: Dr Dan Finkenstadt (U.S. Naval Academy)

56 Density Functional Theory and Surfaces

Speaker: Dr Andreas Schroeder (University of Illinois at Chicago)

57 Quantum Dots and QE

58 (approved by PC) Many-body processes in Photoemission (DFT)

Speaker: Dr J. Kevin Nangoi (Cornell University)

59 (suggested by PC) Computational Screening for New Photocathode Materials

60 Workshop Discussion - combine with Session 10 WD

10:35 Break

Session 10: Theory and Computation - continued

61 Surface Acoustic Waves and enhanced PE

62 Space charge and laser intensity

Speaker: Dr Peng Zhang (Michigan State University)

63 Modeling quantum yield, emittance, and surface roughness effects

Speaker: Dr Dimitre Dimitrov (Tech-X Corp.)

64 (Suggested by Pietro and Sid) Chemical and surface roughness

Speaker: Dr Gevork Gevorkyan (CBB - Arizona State University)

65 Trajectories, beam codes, and delayed emission modeling

66 A predictive QE simulation using DFT input for beam codes

Speaker: Dr Kevin Jensen (Naval Research Laboratory)

67 Workshop Discussion

12:55 Working lunch: discussion session (lunch provided)

Session 11: Novel Research and Applications

68 The accelerator on a chip with a special focus on source requirements

Speaker: Dr Alexander Tafel (University Erlangen-Nuremberg (FAU))

69 Generation of attosecond electron pulses by inelastic ponderomotive scattering at an optical traveling wave

Speaker: Dr Martin Kozak (Charles University)

70 Quantum well and dot cathodes and their characterization

71 Workshop Discussion

15:45 Break

Session 12: Novel Research and Applications (and concluding discussion)

72 Towards adaptive, automated growth of photocathodes

Speaker: Dr Vitaly Pavlenko (Los Alamos National Laboratory)

73 Fabrication and photoemission results of diamond field arrays

Speaker: Dr Evgenya Simakov (Los Alamos National Laboratory)

74 Cryogenic TEmeter and sample exchange with STM and ARPES system

Speaker: Dr Alice Galdi (Cornell University)

75 Workshop Discussion

17:30 Closeout Discussion: General view of workshop, Next P3, comments and future plans

17:45 Adjourn 2018 P3 Workshop