Advanced Bent Crystal Collimation Studies at the Tevatron (T-980)

TL;DR

The T-980 experiment at the Tevatron has integrated new bent crystals and a high-resolution pixel detector system to improve beam collimation, with detailed analysis and simulation comparisons demonstrating enhanced understanding of crystal channeling effects.

Contribution

Introduction of new crystal types and a pixel telescope system for advanced beam profile measurements in collimation studies.

Findings

Successful implementation of new crystals and detector system.

Enhanced measurement of beam profiles and channeling effects.

Comparison of experimental results with detailed simulations.

Abstract

The T-980 bent crystal collimation experiment at the Tevatron has recently acquired substantial enhancements. First, two new crystals - a 16-strip one manufactured and characterized by the INFN Ferrara group and a quasi-mosaic crystal manufactured and characterized by the PNPI group. Second, a two plane telescope with 3 high-resolution pixel detectors per plane along with corresponding mechanics, electronics, control and software has been manufactured, tested and installed in the E0 crystal region. The purpose of the pixel telescope is to measure and image channeled (CH), volume-reflected (VR) and multiple volume-reflected (MVR) beam profiles produced by bent crystals. Third, an ORIGIN-based system has been developed for thorough analysis of experimental and simulation data. Results of analysis are presented for different types of crystals used from 2005 to present for channeling and volume reflection including pioneering tests of two-plane crystal collimation at the collider, all in comparison with detailed simulations.