Diagnostic instrumentation for the SSRL 3 GeV injector

The Stanford Synchrotron Radiation Laboratory (SSRL) has built a 3-GeV injector to fill the Stanford Positron Electron Accelerator Ring (SPEAR). The diagnostics and associated instrumentation are discussed. The authors describe the function of the various devices in three different situations: the initial commissioning of the machine when systems were being checked out with very low current; machine physics on and characterization of the injector itself; and the normal operation of the machine as a dedicated injector for SPEAR. The devices considered are the Faraday cup, the current toroids, the insertable screens, the beam position monitors, the Q meter, and the stripline.<
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