Good to be back at @imperialcollegeldn.bsky.social for the FFA'25 workshop

Day 2 at the IOP PAB conference taking place in Oxford today

Xeuying Lu explained how reducing the RF pulse duration, tau, helps get around the breakdown limit - empirically the limit scales with tau to the power of 5

Proton and heavy ion beam power over time presented by Kanemura-san of FRIB #ipac25

SY Lee showed these nice experimental measurement of Lissajous curves #ipac25

For accelerator physicists the black line depicts the microwave instability threshold in the complex normalised impedance plane in the case of a Gaussian momentum distribution. For plasma physicists - this is just another way of looking at the plasma dispersion function!

This is an example of how it occurs in the wild. (p,i,j) are the array indices

This is another I found on my lunchtime walk

Harwell campus festures some eye-catching buildings at various stages of construction. This one looks fairly complete ...

The alternative approach- stack several cycles on the outer radius of a fixed field accelerator. This increases the intensity for low rep rate target

Beams circulating in a ring before extraction to one of target stations (in reality the split happens later along a common extraction line)

Our beam stacking paper earned an Editor Suggestion accolade!

Photo taken on Brighton beach yesterday by @fengho1.bsky.social

For accelerator physics, gotta be SY Lee