Fleck, T.

Paper	Title	Page
WEP002	Overview of the Communication Structure of the HIT Accelerator Control System	168
	J. M. Mosthaf, S. Hanke, A. Peters, S. Scheloske, S. Vollmer HIT, Heidelberg T. Fleck GSI, Darmstadt
	The HIT ACS is a modular, PC and front-end controller (with FPGAs) based accelerator control system developed by the company Eckelmann AG, Wiesbaden, Germany in cooperation with GSI and HIT. It consists of a database and several central applications running on Windows 2k3 server machines as well as a dozen control room client PCs for the GUIs, and a few hundred front-end device controlling units (DCUs). Due to strict timing requirements in the ms and partly μs range, communications during an acceleration cycle are done in real-time via RTB (Real Time Bus) and real-time shared memory components on the main control server. We show the overall structure of the ACS network and outline the relation of the component devices and the Ethernet and RTB communications between them.
WEP005	Monolithic DAQ System for Beam Diagnostics at the HIT Medical Accelerator Facility	177
	M. Schwickert, T. Fleck, A. Reiter GSI, Darmstadt
	The Heidelberg Ion Therapy Center HIT is presently in the final phase of commissioning. HIT consists of a two-stage linac followed by a compact heavy-ion synchrotron. The ion beam can be delivered to two horizontal treatment places and a gantry structure for 360° patient treatment. In this contribution we report on the basic concepts for the integration of the beam diagnostic data acquisition into the overall accelerator control system and the distributed timing devices. The equipment-side abstraction layer of facility-wide device classes and its seamless integration besides device control units, e.g. for power supplies, is presented and first operational experiences of the machine commissioning are discussed. As examples for the data acquisition of the high-energy beam transport section the detection of beam profiles using MWPCs and Scintillation Screens is presented, as well as measurements of beam intensity using ionization chambers.
	Poster
WEP021	Status of the Control System for the Therapy Facility HIT	215
	T. Fleck, R. Bär GSI, Darmstadt J. M. Mosthaf HIT, Heidelberg
	Shortly before first tumour patients will be treated with high-energy ions at the facility in Heidelberg we give an overview of the control systems special characteristics, current status and remaining functionality to completion. The control system was designed by GSI but has been developed by an all-industrial partner. At each of the three therapy rooms more than 20000 combinations of beam energy, intensity and focus can be requested by the therapy control system. The commissioning for carbon and proton ion beams has already been conducted by GSI. We show how different operating conditions are implemented to ensure at the same time the possibility for experimental research while beam properties already verified within medical test procedures must not be altered without following predefined workflows. Therefore all system and device parameters as well as all set values that possibly change beam properties for patient treatment have to be securely locked or e.g. integrated into checksums. We will also focus on several minor and a few major changes in functionality that had to be implemented to conform to the requirements that originated by the risk assessment of the control system.
	Poster