2020 Physics/Theoretical Colloquium- VIRTUAL
 
Thursday, September 3rd , 2020
3:45 – 4:45 p.m.
WEBEX
 
Speaker: Thomas Roser 
 
            Deputy Associate Laboratory Director for Accelerators
Collider-Accelerator Department Chair
Brookhaven National Laboratory
 
“High performance accelerators with reduced energy consumption”
 
 
 
Abstract: 
 
As the performance of accelerators for fundamental research has steadily increased the electric power consumption has also increased significantly. To reach ever higher performance and beam energy it will be necessary to develop and use more energy efficient technologies and concepts. This emphasis on energy efficiency will also become more urgent as limiting the level of global warming requires drastic reductions in energy consumption by everybody, including by scientists using their facilities. 
 
I will  briefly present the 20-year operation of RHIC, the first hadron accelerator and collider consisting of two independent superconducting rings. With the use of advanced beam cooling techniques record luminosities for heavy ion collisions were achieved. The use of superconducting magnets and beam cooling enhanced luminosities make RHIC an example of how to reach high performance and scientific output in a energy efficient way.
 
I will also discuss how Energy Recovery Linac (ERL) technology together with very bright beams can dramatically reduce electric power consumption and still achieve high performance for a high energy electron-positron collider. I will also present recent results from the test ERL CBETA. CBETA was built specifically to demonstrate energy efficient technologies.