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Publications (30)
For the control of experimental sequences composed of triggers, gates and delays a Pulse-Pattern Generator (PPG) has been developed based on a Field Programmable Gate Array (FPGA) addressed in a LabVIEW environment. It allows a highly reproducible timing of measurement procedures by up to 64 individual channels with pulse and delay periods from the...
At GSI Darmstadt the linear decelerator HITRAP is currently under commissioning. The aim is to decelerate heavy, highly charged ions up to U92+-, which come fromthe experimental storage ring (ESR) at an energy of 4 MeV/u, in several distinct steps down to less than one meV. In the end, bunches of up to 105 ions are captured and stored in a Penning...
The WITCH experiment is a medium-scale experimental set-up located at ISOLDE/CERN. It combines a double Penning trap system with a retardation spectrometer for energy measurements of recoil ions from β decay. For a correct operation of such a set-up a whole range of different devices is required. Along with the installation and optimization of the...
The Petawatt High Energy Laser for Ion eXperiments (1,2), will offer the unique combination of a high current, high energy (GeV/u) heavy-ion beam with a powerful laser beam thus providing the opportunity to investigate a variety of fundamental science issues in the field of atomic physics, nuclear physics, and plasma physics. The PHELIX Control Sys...
For the first time, an object oriented approach is used together with LabVIEW RT. This real-time variant of the well known graphical programming language is based on the PharLap OS. This allows for two different scenarios. First, existing object oriented LabVIEW code developed for MS Windows and Linux platforms can be reused on a real-time platform...
The high-energy high-power laser system PHELIX (Petawatt High Energy Laser for heavy Ion eXperiments) [1] is currently under construction at the Gesellschaft fuer Schwerionenforschung mbH (GSI) Darmstadt. With PHELIX GSI will offer the unique combination of a high-current, high-energy (GeV/u) heavy-ion beam with an intense laser beam. This will ope...
This paper reports on the status of the PHELIX petawatt laser which is
built at the Gesellschaft fuer Schwerionenforschung (GSI) in close
collaboration with the Lawrence Livermore National Laboratory (LLNL), and
the Commissariat à l'Energie Atomique (CEA) in France. First
experiments carried out with the chirped pulse amplification (CPA)
front...
A new versatile LabVIEW® based control system has been developed and implemented at the ISOLTRAP experiment. This enhances
the ease of use as well as the flexibility and reliability for ISOLTRAP and is flexible enough to be used for other trap experiments
as well.
An object oriented approach has been developed using Lab VIEW RT. This real-time variant of the well known graphical programming language is based on the PharLap OS. This approach allows for two different scenarios. First, existing object oriented code developed for MS-Windows and Linux platforms can be reused on a real-time platform, next to a tim...
The high-energy high-power laser system PHELIX (Petawatt High Energy Laser for heavy ton eXperiments) [1] is currently under construction at the Gesellschaft fuer Schwerionenforschung mbH (GSI) Darmstadt. With PHELIX GSI will offer the unique combination of a high-current, high-energy (GeV/u) heavy-ion beam with an intense laser beam. This will ope...
The CS framework is used in production runs at various experiments. Results that were obtained using CS as control and data acquisition systems have been published. In general, the experimentalists are satisfied with the CS framework. CS is also envisaged as a candidate for control systems at FLAIR and HITRAP. Technically, CS has concentrated on th...
A new LabVIEW-based control system for the ISOLTRAP facility at ISOLDE/CERN has been implemented by using the Control System (CS) framework which has been developed by DVEE/GSI during the last two years. CS is an object-oriented, multi-threaded, event-driven framework with Supervisory Control and Data Acquisition (SCADA) functionality. It allows on...
The high power laser PHELIX is currently installed at the heavy ion accelerator facility GSI-Darmstadt. It will deliver several kJ in pulses of 1 to 10 ns length with variable pulse shaping, and up to one petawatt power in 500 fs pulses using chirped pulse amplification. The pulsed power system setup for the glass amplifiers and Faraday rotators is...
A system of three dimensional raster scanning of carbon beam used
for cancer therapy has been designed and built at GSI and is in
operation since December, 1997. The following components are presented:
1. The front-end real-time system. It is based on VME boards with DSPs
designed and built at GSI. In treatment mode, the beam is steered and
control...
Summary form only received as follows: A system of three dimensional raster scanning carbon beams used for cancer therapy has been designed and built at GSI and has been in operation since the end of 1998. The front-end real-time system is based on VME boards with DSPs designed and built at GSI. The system is operated in two modes: first, the treat...
A system of three dimensional raster scanning of carbon beam used for cancer therapy has been designed and built at GSI and is in operation since December, 1997. The following components are presented: 1. The front-end real-time system. It is based on VME boards with DSPs designed and built at GSI. In treatment mode, the beam is steered and control...
The software control system for the therapy treatment consists of three parts. The operator interface based on FactoryLink ECS 1 used as colourgraphic system, the Frontend-Daemon (1) controlling the hardware and the Therapy Online Monitor TOM. The treatment facility is designed to be operated by a medical assistant. FactoryLink ECS is used to provi...
GSI performs basic and applied research in physics and related natural science disciplines using a heavy ion accelerator facility. The control system group of the department for Computing and Experiment Electronics (DVEE) helps the experiments in developing and implementing experiment control systems. In many cases, control systems for small experi...
Since a few years, the CS (Control System) framework is in use at a couple of experiments at various laboratories. The main idea behind CS is to provide a common basis which can be used to develop dedicated control systems by adding experiment specific add-ons. The key features of CS are an object oriented approach, event driven communication, the...
1 Gesellschaft für Schwerionenforschung mbH; 2 TU Darmstadt; 3 Lawrence Livermore National Laboratory, USA; 4 Fachhochschule Münster; 5 Julius-Maximilians Universität Würzburg; 6 Max-Born-Institut Berlin We report the major achievements of the phys-ics/engineering design effort and the construction of the PHELIX laser, which will be capable of prod...
In 2006, LabVIEW Object Oriented Programming (LVOOP) became available as a new feature with LabVIEW version 8.20. This work accomplishes a design study in order to investigate the use of LVOOP to control system development. With LVOOP, the way of object-oriented programming must be reconsidered, since this approach reveals quite a few differences c...
Beams of heavy-charged particles of high energy like carbon ions are superior to any other type of radiation conventionally used in external radiotherapy. In contrast to photons and neutrons, the dose for the ions increases with penetration depth and culminates in a sharp maximum at the end of range. Due to the microscopic track structure this regi...