TY - JOUR
T1 - Characterization of the SPIDER Cs oven prototype in the CAesium Test Stand for the ITER HNB negative ion sources
AU - Rizzolo, Andrea
AU - Barbisan, Marco
AU - Bizzotto, Luisa
AU - Capobianco, Roberto
AU - De Muri, Michela
AU - Fadone, Michele
AU - Ghiraldelli, Raffaele
AU - Gorno, Sophie
AU - Laterza, Bruno
AU - Marchiori, Giuseppe
AU - Marcuzzi, Diego
AU - Migliorato, Luisa
AU - Molon, Federico
AU - Ravarotto, Diego
AU - Rizzieri, Roberto
AU - Rossetto, Federico
AU - Sartori, Emanuele
AU - Serianni, Gianluigi
AU - Veltri, Pierluigi
N1 - Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2019/9
Y1 - 2019/9
N2 - The ITER Heating Neutral Beam (HNB) injector is required to deliver 16.7 MW of power to the plasma from a neutralized beam of H−/D− negative ions, produced by an RF source and accelerated up to 1 MeV. To enhance the H−/D− production, Cs will be routinely evaporated in the source by means of specific ovens embedded in the source, to reduce its work function. Controlling and monitoring the evaporation rate of Cs inside the source will be fundamental to achieve the desired performance for the ITER HNB. The prototype RF negative ion source SPIDER has been developed and built in the Neutral Beam Test Facility at Consorzio RFX. In SPIDER, liquid Cs based ovens will be used to inject Cs vapors inside the source. The CAesium Test Stand (CATS) has been specifically designed and set up for testing, commissioning, and characterizing Cs ovens in vacuum, but also to study the Cs evaporation and deposition onto surfaces. A SPIDER Cs oven prototype has been manufactured and tested in CATS in order to characterize its thermal behavior, by means of thermocouples and thermal camera, and its Cs flux, by means of Surface Ionization Detectors and Laser Absorption Spectroscopy.
AB - The ITER Heating Neutral Beam (HNB) injector is required to deliver 16.7 MW of power to the plasma from a neutralized beam of H−/D− negative ions, produced by an RF source and accelerated up to 1 MeV. To enhance the H−/D− production, Cs will be routinely evaporated in the source by means of specific ovens embedded in the source, to reduce its work function. Controlling and monitoring the evaporation rate of Cs inside the source will be fundamental to achieve the desired performance for the ITER HNB. The prototype RF negative ion source SPIDER has been developed and built in the Neutral Beam Test Facility at Consorzio RFX. In SPIDER, liquid Cs based ovens will be used to inject Cs vapors inside the source. The CAesium Test Stand (CATS) has been specifically designed and set up for testing, commissioning, and characterizing Cs ovens in vacuum, but also to study the Cs evaporation and deposition onto surfaces. A SPIDER Cs oven prototype has been manufactured and tested in CATS in order to characterize its thermal behavior, by means of thermocouples and thermal camera, and its Cs flux, by means of Surface Ionization Detectors and Laser Absorption Spectroscopy.
KW - Caesium
KW - LAS
KW - NBI
KW - SID
KW - Test bed
UR - http://www.scopus.com/inward/record.url?scp=85059952242&partnerID=8YFLogxK
U2 - 10.1016/j.fusengdes.2019.01.053
DO - 10.1016/j.fusengdes.2019.01.053
M3 - Article
AN - SCOPUS:85059952242
SN - 0920-3796
VL - 146
SP - 676
EP - 679
JO - Fusion Engineering and Design
JF - Fusion Engineering and Design
ER -