The HERA-project

This paper reports on the HERA project. The present schedule calls for a completion of the project and the start-up of the physics program by mid-1990. The electron ring of HERA is close to completion and first storage trials are to start within a few months. Existing rf-hardware should make storage of 26 GeV electrons (positrons) possible. The ultimate energy of 30 GeV or higher will be reached with superconduct- rf-cavities. The development of superconducting magnets for the proton ring has been concluded successfully and industrial production has started. Test of pre-series magnets indicate that HERA magnets will operate with a comfortable safety margin even at 1 TeV. The low injection energy of 40 GeV into HERA will make a programmed compensation and correction of magnetic multipole-fields necessary. The 20 KW He-refrigerator for HERA is operational, the He-distribution system is being installed. The new 50 MeV H-injection linac is close to completion, the new 7 GeV proton accelerator DESY III is ready. The modified former e+-e- storage ring PETRA should begin proton acceleration up to 40 GeV emdash the injection energy into HERA emdash within the coming year