Encontrados 5 documentos, a visualizar página 1 de 1
Comparison of inverse planning systems based on biological or physical factors:...
Coelho, Carina Marques; Faustino, V.; Heliodoro, H.; Monsanto, Fátima; Sá, Ana Cravo; Varandas, C.Radiotherapy (RT) is one of the most important approaches in the treatment of cancer and its performance can be improved in three different ways: through the optimization of the dose distribution, by the use of different irradiation techniques or through the study of radiobiological initiatives. The first is purely physical because is related to the physical dose distributiuon. The others are purely radiobiolog...
Enhanced neutron diagnostics data acquisition system based on a time digitizer ...
Pereira, R. C.; Combo, A.; Cruz, N.; Sousa, Jorge; Correia, C.; Varandas, C.; Conroy, S.; Källne, J.This paper proposes a new transient recorder (TR)-time digitizer (TD) hybrid system to be used to pull out higher performance of presently used techniques for measuring the collimated flux and the spectrum of the neutron emission from fusion plasmas of either deuterium or deuterium-tritium, as well as to apply to new neutron measuring techniques, with demanding specific requirements in plasma physics. This syst...
Role of the tokamak ISTTOK on the EURATOM Fusion Programme
Fernandes,H.; Varandas,C.A.F.; Cabral,J.A.C.This paper describes the role of the tokamak ISTTOK on the development of the portuguese fusion research team, in the frame of the EURATOM Fusion Programme. Main tasks on education and training, control and data acquisition, diagnostics and tokamak physics are summarized. Work carried out on ISTTOK in collaboration with foreign teams is also reported.
A large memory, high transfer rate VME data acquisition system for the JET corr...
Cruz, Nuno; Pereira, Rita; Correia, Miguel; Cupido, Luis; Correia, Carlos; Varandas, C. A. F.The current paper presents a large memory giving special emphasis to the architecture and suitability of the Linux OS for this type of applications. The system will be used on the joint european torus new correlation reflectometers composed by four microwave channels with four analogue signals each. All sixteen signals will be acquired by 12-bit VME fast acquisition channels at 2 Msamples/s achieving a total da...
A 1 GSPS VME data acquisition module
Loureiro, C. F. M.; Combo, A. M. C. F.; Correia, C. M. B. A.; Varela, P.; Manso, M. E.; Varandas, C.; Serra, F.In the following a new data acquisition architecture is proposed allowing high sampling rates along with a large memory data buffer. The modular design allows up to four 250 MHz, 8-bit acquisition channels to operate in an interleaved way, achieving 1 GSPS. Each channel can acquire continuously up to 3 MBytes of data (or 12 MBytes when interleaved). Since several modules can coexist in an acquisition system, pr...
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