http://www.cnr.it/ontology/cnr/individuo/prodotto/ID276679
Electrostatic Sensors for SPIDER Experiment: Design, Manufacture of Prototypes and First Tests (Abstract/Poster in atti di convegno)
- Type
- Label
- Electrostatic Sensors for SPIDER Experiment: Design, Manufacture of Prototypes and First Tests (Abstract/Poster in atti di convegno) (literal)
- Anno
- 2013-01-01T00:00:00+01:00 (literal)
- Alternative label
M. Brombin; M. Spolaore; G. Serianni; A. Barzon; L. Franchin; R. Pasqualotto; N. Pomaro; L. Schiesko; C. Taliercio; L. Trevisan (2013)
Electrostatic Sensors for SPIDER Experiment: Design, Manufacture of Prototypes and First Tests
in The 15th International Conference on Ion Sources (ICIS '13), Chiba, Japan, September 9-13, 2013
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- M. Brombin; M. Spolaore; G. Serianni; A. Barzon; L. Franchin; R. Pasqualotto; N. Pomaro; L. Schiesko; C. Taliercio; L. Trevisan (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
- ThuP41; Conference site: http://www.nirs.go.jp/conf/icis13/ (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
- http://www.nirs.go.jp/conf/icis13/abstracts.shtml (literal)
- Note
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- 1-7, 9-10 : Consorzio RFX - Associazione Euratom-Enea sulla Fusione, corso Stati Uniti 4, I-35127 Padova, Italy /
8 : Max-Planck-Institut fürPlasmaphysik, EURATOM Association, 1533, D-85740 Garching, Germany. (literal)
- Titolo
- Electrostatic Sensors for SPIDER Experiment: Design, Manufacture of Prototypes and First Tests (literal)
- Abstract
- A system of electrostatic sensors capable of operating in RF negative ion H
?
/D
?
source has been designed for
the SPIDER experiment [1], prototype source (100 keV, 50 A) of the ITER neutral beam injector [2]. This
system allows the investigation of the homogeneity of plasma parameters, such as plasma density, electron
temperature, plasma potential, in the extraction region of the ion source, where mostof the extracted negative
ions are produced. In order to experimentally test the system a prototype was manufactured and tested in the
BATMAN [3] experiment, where a plasma environment most similar to that of SPIDER is available. In plasmas
generated by radio frequency discharge, RF fluctuations of plasma potential lead to distortion of I-V
characteristic curve obtained from the probe and hence to incorrect values of the plasma density and temperature.
Special attention was devoted to this aspect and a RF passive compensation circuit has been used to effectively
reduce the RF effects, by means of a floating electrode exposed to the plasma coupled to a Langmuir probe
through a shunting capacitor.The circuit has been designed according to the results obtained with software
simulations in which the effects of real components impedance and their different configurations were
reproduced. According to the particular constraints for the installation on BATMAN, a special holder has been
designed and manufactured to house two prototypes Langmuir probes with the respective reference electrode and
two thermocouples to measure the temperature of the probe support. The entire electrostatic probe system,
from probes through RF compensation circuit to acquisition and signal conditioning device, has been tested.
Different plasma conditions expected in the BATMAN experiment were explored in order to check the reliability
of the sensor to provide different ion density at the probe location. Ion saturation current values obtained during
these tests are in the range assumed for the design, so the plasma density estimate deduced from the collected
data is consistent with the expected values.
[1] P. Sonato et al., Fusion Eng. Des. 84, 269 (2009). [2] M. Spolaore, G. Serianni et al. J. Phys. D: Appl. Phys.
43 (2010) 124018. [3] U. Fantz et al., Plasma Phys. Control. Fusion 49 (2007) B563-B580. (literal)
- Prodotto di
- Autore CNR
Incoming links:
- Autore CNR di
- Prodotto