Microbunched electron cooling for high-energy hadron beams

Area of Science:

• Particle Physics
• Accelerator Physics
• Beam Cooling Technologies

Background:

• Established methods like electron and stochastic cooling are ineffective for TeV-scale hadron beams.
• Previous theoretical work by Derbenev proposed using electron instabilities for hadron beam cooling.
• Existing cooling techniques face limitations at extremely high particle energies.

Purpose of the Study:

• To present a new electron cooling scheme for high-energy hadron beams.
• To adapt Derbenev's electron cooling concept using the microbunching instability.
• To explore faster cooling methods for high-density particle beams.

Main Methods:

• Utilizing the microbunching instability as an amplifier for electron cooling.
• Developing a simple analytical model to explain the cooling mechanism.
• Performing simulations with realistic parameters for the Large Hadron Collider (LHC).

Main Results:

• The proposed method shows potential for cooling hadrons near the TeV scale.
• The microbunching instability's large bandwidth enables rapid cooling of dense beams.
• Simulations indicate feasible cooling rates for LHC conditions.

Conclusions:

• The microbunching-instability-based electron cooling offers a promising solution for high-energy hadron beams.
• This technique could overcome current limitations in particle accelerator cooling.
• The findings have direct implications for future collider designs and operations.