HERA Overview
HERA Schematic
- The world’s only electron-proton collider
- Collides 27.5GeV electrons with 820GeV protons
HERA Performance
- Constant increase in performance year by year
- 1997 doubled delivered luminosity
- Successful change to shutdown scheduling
HERA Currents and Luminosity
- Steady increase in Ip through 1997
- Peak luminosity 1.4x1031cm-2s-1
HERA Specific Luminosity
- Higher than design values
- 1997 change to ? functions successful
Polarisation
- Consistently able to achieve high degree of polarisation
The Next Years
- New vacuum pumps for electron ring installed this shutdown
- Running with e- in 1998 and 1999
- Comparable delivered luminosity to e+p over two years
- Test with proton energy increased to 920GeV
Into the next Millennium
- HERA will run until 2005
- Upgrade to deliver 1fb-1 by 2005 will be carried out during 1999/2000 long shutdown
- Explore High-Q2 and electroweak physics
- Requires major modifications to experimental interaction regions
- Spin Rotators installed for Zeus and H1 experiments in 1999/2000 (Hermes already operational)
- Begin program of polarised measurements
To Conclude
- HERA has performed well over the last two years
- We look forward to high luminosity running until 2005
- Still a wealth of physics to investigate