IONIZATION PROFILE MONITORS - IPM @ GSI *

The Ionization Profile Monitor (IPM) in the SIS18 is frequently used for machine development. The permanent availability and the elaborated software user interface make it easy and comfortable to use. Additional to the beam profile data the device records the data of synchrotron dc current, dipole ramp and accelerating rf properties. The trend curves of these data are shown correlated to the beam profile evolution for an entire synchrotron cycle from injection to extraction with 100 profiles/s. The reliable function is based on the optimized in-vacuum hardware design, and the UV-light based calibration system. The permanent availability is based on the convenient software interface using the Qt library. A new IPM generation was recently commissioned in the experimental storage ring (ESR) at GSI and another at COSY at FZ-Julich. These monitors are enhancements of the heavy ion synchrotron (SIS18) multiwire IPM but equipped with an especially developed large area 44x94 mm 2 optical particle detector of rectangular shape that is readout by a digital camera through a viewport.