SPIDER Cs Ovens functional tests
نویسندگان
چکیده
The SPIDER experiment is operating at the ITER Neutral Beam Test Facility PRIMA since June 2018 to study operation of a full ITER-size negative ion source. In order increase extracted current and reduce co-extracted electron current, caesium evaporated inside fact, adsorption Cs onto plasma grid, i.e. first grid extraction system, lowers surface work function, enhancing probability conversion impinging hydrogen particles into ions. At test facility, will be by heating liquid reservoir in three ovens located back-plate must assure controllable reproducible evaporation. A oven prototype was procured tested CAesium Stand (CATS) site validate design. Following experimental tests, few improvements were introduced final design for Then, 2019 commissioned before their installation 2020. This paper reports functional tests embedded diagnostics. These carried out CATS, with aim characterizing ovens, them use campaign evaporation planned end successfully characterized terms rate different temperatures. Moreover, show good reproducibility reliability.
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ژورنال
عنوان ژورنال: Fusion Engineering and Design
سال: 2021
ISSN: ['1873-7196', '0920-3796']
DOI: https://doi.org/10.1016/j.fusengdes.2021.112331