This animation shows the emergence of microbunches in an electron bunch due to SASE. The code written for this is NOT based on real SASE phenomena, but simply a mathematical trick to induce a similar visual effect. As such, this is really just a cartoon, and should not be considered accurate. For a start, the number of bunches is far too small; moreover, the consistency of microbunches across the entire length of the original bunch is unrealistic.