Beam loss handling at Tevatron: simulations and implementations

Summary of studies is presented towards minimization of beam loss in the critical locations at the Fermilab Tevatron to reduce background rates in the collider detectors and to protect machine components. Based on detailed Monte-Carlo simulations, measures have been proposed and incorporated in the machine to reduce accelerator-related instantaneous and residual background levels in the D𝒪 and CDF detectors. Recent measurements are in good agreement with the predictions. A re-alignment of the electrostatic deflector and the Lambertson magnet and the addition of shielding in the A𝒪 straight section has resulted in reduction of beam induced energy deposition in the superconducting magnets, which allowed an increase in the extracted beam intensity. Using the same simulation technique, it has been calculated that the total beam of 10¹³ protons can be removed from the Tevatron at the end of the store, leaving the antiproton beam in the machine for recycling. Using the E𝒪 collimator with attached scattering targets, this process will require about 100 seconds to keep the power deposition in the superconducting magnets below the quench level