Startup of the URAL-15 linear proton accelerator with quadrupole rf focusing

The URAL-15 accelerator is the first stage of a 30 MeV linear accelerator (the URAL-30), intended for use as an injector into the booster of the proton synchrotron of the Institute of High-Energy Physics. The basic parameters of the accelerator and the results of the first startup and adjustment experiments are reported. Accelerated protons with an energy of 15.9 MeV have been obtained. The maximum accelerated current is greater than 50 mA. The spectral width of the pulses is 1.2%. The normalized emittance is less than 0.3 mradxcm.