1. Closeout of VHEE17 Workshop
Roger M. Jones Cockcroft Institute and The University of Manchester
Very High Energy Electron Radiotherapy: Medical & Accelerator Physics Aspects Towards Machine Realisation (24th - 26th July 2017) The Cockcroft Institute, Daresbury
Agenda:

2. Overview Background to VHEE: Genesis of idea (C. DesRosiers)
Experiments at SLAC/Stanford with HG linacs + Strathclyde (laser Plasma)
Manchester dose delivery GEANT4/TOPAS simulations + exps at CERN’s CALIFES/CLEAR facility
Medical e-linac status
Current linacs
Cutting edge HG (High Gradient) designs –Tsinghua, Lancs/CI
Areas to focus on in the workshop
Design of a Cu machine with an aggressive path to completion –timeline to 250 MeV.
International lab facilities available for dose studies and for HG linac studies?

3. General Themes of VHEE17 Workshop
Design of high gradient machine (~100 MeV/m) based on wealth of robust experience gained in linear colliders (CLIC etc).
Very high gradient (laser plasma, dielectric wakefield) –prospects for future?
Multi-linac system: phase switched to linacs azimuthally surrounding patient –scan each beam (minimise mechanical moving parts)
Comparison of dose conformity (VHEE vs photon and proton) –is entrance dose improved?
Focussed vs unfocussed beams + multiple pencil beams
Rapid in-situ imaging
RBE of VHEE
Ultra-high rapid dose delivery: FLASH radiotherapy (biological results)

4. General Goals Review state of art in VHEE Dose Delivery:
E-beam steering & e-beam focussing
Conformal delivery
Sensitivity to inhomogeneities vs proton & photon radiotherapy
Review the treatment planning current data and the way forward
The path to designing a VHEE Machine to reliable deliver high dose rates rapidly:
Capitalise on 3 or more decades of experience in HG LC research (~100 MeV/m)
Novel HG acceleration schemes Cu schemes
Examine the imaging and signature challenges
Laser Plasma, Dielectric Accel.
Examine availability of National Lab Resources
Facilities available to test ~200 MeV dose deposition

5. Overall Goals The path to machine design
What can we capitalise on to achieve a 250 MeV radiotherapy machine?
What are the obstacles, and what are means to overcome these potential pitfalls?
How can we integrate imaging within such a machine?
How many linacs are needed and what power/source is required?
Potential advantages & limitations of VHEE
Conformal dose deposition
Ease of beam steering
Ultra high dose FLASH radiotherapy (recent results & future work
Future collaborations …

7. Looking forward to seeing you at VHEE19….
Thanks to all attendees, talks and discussions….