BNL, Upton, Long Island, New York, USA
EPICS is widely used software infrastructure to control Particle Accelerators, its Channel Access (CA) network protocol for communication with Input/Output Controllers (IOCs) is easy to implement in hardware. Many vendors provide CA support for their devices. The RHIC Control System provides control of more than 400, 000 parameters through Accelerator Data Objects (ADO) software abstraction layer. In this paper we present software bridge, which allows to cross-communicate between ADO and EPICS devices. It consists of two separate programs: an ADO manager, which hosts the ADO parameters and executes caput() request to modify EPICS PV when parameter is changed; and an epics2ado program which monitors the EPICS PVs and notifies the ADO manager. This approach have been implemented in integration of the NSLSII PSC hardware interface into RHIC Controls System.
BNL, Upton, Long Island, New York, USA
Schottky monitors are used to determine important beam parameters in a non-destructive way. In this paper we present improved processing of the transverse and longitudinal Schottky signals from a hi-Q resonant 2.07 GHz cavity and transverse signals from a low-Q 245 MHz cavity with the main focus on providing the real-time measurement of beam tune, chromaticity and emittance during injection and ramp when the beam condition is changing rapidly. The analysis and control is done in python using recently developed interfaces to Accelerator Device Objects.
