Title :
The status of HERA (storage ring)
Author_Institution :
Inst. fuer Experimentalphys., Hamburg Univ., Germany
Abstract :
The preaccelerator chains are operational, delivering 13-GeV electron (positron) and 40-GeV proton beams to the HERA (Hadron Electron Ring Accelerator) rings. The electron ring has achieved 27.5 GeV at 5% of the design intensity and with a beam lifetime of several hours. The first octant of the proton ring was cooled down, the quench protection was successfully tested, and the optics was checked using a 7-GeV positron beam. The HERA proton ring was completed in early November 1990, and it has been at cryogenic temperatures since mid December. The steady-state condition at 4.4 K could easily be established, and the measured cryogenic heat load of the ring is below the predicted value.<>
Keywords :
electron accelerators; proton accelerators; storage rings; HERA; Hadron Electron Ring Accelerator; beam lifetime; cryogenic heat load; positron beam; preaccelerator chains; proton ring; quench protection; storage ring; Cryogenics; Electron accelerators; Electron beams; Electron optics; Particle beams; Positrons; Protection; Proton accelerators; Storage rings; Testing;
Conference_Titel :
Particle Accelerator Conference, 1991. Accelerator Science and Technology., Conference Record of the 1991 IEEE
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-0135-8
DOI :
10.1109/PAC.1991.165141
