# Exploration of a High Luminosity 100 TeV Proton Antiproton Collider

## TL;DR

This paper explores the design and advantages of a 100 TeV proton-antiproton collider with high luminosity, focusing on its potential to surpass current collider capabilities for discovering new physics.

## Contribution

It proposes a novel collider design utilizing 4.5 T dipoles and a multi-channel antiproton source to achieve higher cross sections and more efficient particle production compared to proton-proton colliders.

## Key findings

- Higher cross sections for high mass states in p-antiproton collisions.
- Reduced synchrotron radiation and event pile-up due to lower beam currents.
- More compact detector design enabled by central event production.

## Abstract

New physics is being explored with the Large Hadron Collider at CERN and with Intensity Frontier programs at Fermilab and KEK. The energy scale for new physics is known to be in the multi-TeV range, signaling the need for a future collider which well surpasses this energy scale. We explore a 10$^{\,34}$ cm$^{-2}$ s$^{-1}$ luminosity, 100 TeV $p\bar{p}$ collider with 7$\times$ the energy of the LHC but only 2$\times$ as much NbTi superconductor, motivating the choice of 4.5 T single bore dipoles. The cross section for many high mass states is 10 times higher in $p\bar{p}$ than $pp$ collisions. Antiquarks for production can come directly from an antiproton rather than indirectly from gluon splitting. The higher cross sections reduce the synchrotron radiation in superconducting magnets and the number of events per beam crossing, because lower beam currents can produce the same rare event rates. Events are more centrally produced, allowing a more compact detector with less space between quadrupole triplets and a smaller $\beta^{*}$ for higher luminosity. A Fermilab-like $\bar p$ source would disperse the beam into 12 momentum channels to capture more antiprotons. Because stochastic cooling time scales as the number of particles, 12 cooling ring sets would be used. Each set would include phase rotation to lower momentum spreads, equalize all momentum channels, and stochastically cool. One electron cooling ring would follow the stochastic cooling rings. Finally antiprotons would be recycled during runs without leaving the collider ring by joining them to new bunches with synchrotron damping.