Today’s plan
- This lecture is a wrap-up, not a new theory block.
- We walk the red thread of the course, discuss example exam-style questions in class, and answer remaining questions.
- Use the notes and exercise sheets as the checklist of what you are expected to handle.
1. The arc in one page
- L1–L3: Why fields accelerate; why a free EM wave does not; converters and light sails; CPA → peak intensity.
- L4–L7: Ionization → free electrons; ponderomotive force; plasma refractive index; collisionless absorption at overdense surfaces.
- L8–L9: TNSA (rear sheath) vs. front-side hole boring / radiation-pressure (light sail) regimes.
- L10–L11: Measure spectra (magnet, Thomson); stopping / Bragg; SOBP from polyenergetic beams; solvated electrons.
- L12: Probe optically — chirped-pulse probing, then phase (shadow / Schlieren / interferometry).
- L13–L14: Transport + energy selection (quadrupole doublet) → monoenergetic Bragg peak → I-BEAT (and I-BEAT 3D).
2. In class
Example questions (brought by the lecturer / drawn from exercises) will be discussed live. Expect mix of order-of-magnitude estimates, short derivations, and “explain the figure / demo” items. Bring your open questions — this session is for closing gaps before the exam.
There is no new exercise sheet for Week 15. Revisiting Exercises 8–14 (and the early CPA / ionization sheets) is the most efficient preparation.
3. Open questions (research, not exam checklist)
Efficiency, repetition rate, spectral control, and application-ready beam quality remain active topics. The course stops where the lab story is complete enough to read the current literature — not where the field ends.