Text this: Coherent transition radiation from short electron bunches

  _  _      ___     _    _     _____    _    _   
 | \| ||   / _ \\  | || | ||  |  ___|| | || | || 
 |  ' ||  / //\ \\ | || | ||  | ||__   | || | || 
 | .  || |  ___  ||| \\_/ ||  | ||__   | \\_/ || 
 |_|\_|| |_||  |_|| \____//   |_____||  \____//  
 `-` -`  `-`   `-`   `---`    `-----`    `---`