[2N01-06] Accelerators, Lasers and Their Application

[2N05] Secondary electrons dynamic simulation to model residual gas bunch length monitor for high intensity hadron beams at the Linear IFMIF Prototype Accelerator

*Andrea De Franco¹, Marco Poggi², Loris Antoniazzi², Keitaro Kondo¹, Saerom Kwon¹, Masayoshi Sugimoto¹ (1. QST, 2. INFN)

Keywords:Beam accelerator, Beam Instrumentation, Simulation, Bunch Length, Deuteron Beam

The Linear IFMIF Prototype Accelerator (LIPAc) is designed to accelerate 125mA deuteron beam to 9MeV in continuous wave. The system is now under commissioning and characterization of the longitudinal space is essential for technology validation. A monitor has been developed to measure the beam bunch length from the arrival time distribution, vs. RF phase, of secondary electrons emitted from ionization of residual gas. The unique beam intensity will generate considerable space charge forces on the electrons, and the expected signal rate should be carefully estimated. This work presents the framework developed to simulate the dynamic of electrons from generation to detection. The code is then used to explore the sensitivity of the monitor performances to various manufacture and tuneable parameters.