Investigation of the IHEP proton synchrotron beam debunching during interaction with a thin internal target

The results of the computer simulations of the accelerating beam interaction with a thin internal carbon target at a partially filled orbit on the magnetic field flat top are presented. The mechanisms of the beam debunching in the dependence on the negative or positive coordinates of the target from the central orbit were considered. The results of calculating the influence of the bunch form on the time and depth of beam debunching after fast extraction (FE) as well as the presence of 200 HF kHz structure connected with it are presented. The experimental data on the thin target positive influence on the beam debunching process after FE and diminiting of the 200 kHz structure in extracted beams are given. 8 refs.; 4 figs