Interpretation of temperature distribution observed on W-ITER-like PFUs in WEST monitored with a very-high-resolution IR system
نویسندگان
چکیده
During the 2019 experimental campaign, WEST tokamak was partially equipped with ITER-like plasma facing units (PFUs) made of discrete monoblocks (MBs) in one twelve lower divertor sectors. The magnetic field lines can enter gaps between two MBs and strike their leading edges (LEs) near normal incidence, to high localized heat flux, temperature thermomechanical stress during both stead-state operation transients. Exposed are a particular matter concern because potential crack formation, recrystallization or even melting tungsten. campaign WEST, five them were misaligned (vertical misalignment h = 0.30 ± 0.1 mm) poloidal exposed flux. A medium wavelength IR filter (MWIR: 3.9 ?m) installed very resolution infrared system, featuring submillimeter spatial (?0.1 mm/pixel). This system has detection threshold Tthreshold, BB ? 250 °C. In this paper, thermal analysis will be presented specific focus on overheating toroidal using post-mortem measured emissivity maps. study reveals an unexpected hot spot top LE corner PFUs at outer point (OSP). Photonic calculations performed different lateral surfaces, order consider complex reflectance characteristics gaps. experiment, Larmor radius (0.35 is comparable gap size. Thus, helical trajectory particles may significantly affect load distribution vicinity. Heat simulations ion orbit modeling that radius, its impact MB. photonic showed it possible observe false corner, optical approximation (OA) (IO) modeling, due reflections values.
منابع مشابه
focus on communication in iranian high school language classes: a study of the role of teaching materials in changing the focus onto communication in language classes
چکیده ارتباط در کلاس به عوامل زیادی از جمله معلمان، دانش آموزان، برنامه های درسی و از همه مهم تر، مواد آموزشی وابسته است. در تدریس ارتباطی زبان که تاکید زیادی بر توانش ارتباطی دارد، کتاب درسی به عنوان عامل موثر بر پویایی کلاس محسوب میگردد که درس ها را از طریق فراهم آوردن متن ارتباط کلاسی و هم چنین نوع تمرین زبانی که دانش آموزان در طول فعالیت های کلاسی به آن مشغول اند، کنترل می کند. این حقیقت ک...
15 صفحه اولa study on construction of iranian life tables: the case study of modified brass logit system
چکیده ندارد.
15 صفحه اولAnalysis of temperature factor distribution in high-resolution protein structures.
The temperature factors obtained from X-ray refinement of proteins at high resolution show large variations from one structure to another. However, the B-values expressed in units of standard deviation about their mean value (B'-factor) at the C alpha atoms show remarkably characteristic frequency distribution. In all of the 110 proteins examined in this study, the frequency distribution exhibi...
متن کاملHigh Accuracy Heat Capacity Measurements through the Lambda Transition of Helium with Very High Temperature Resolution
متن کامل
the impact of musical texts on the text recall of young learners of english in isfahan junior high schools
abstract although music possesses some kind of power and using it has been welcome by many students in language classrooms, it seems that they take a non-serious image of the lesson while listening to songs and they may think that it is a matter of fun. the main objective of the present study was to investigate whether learning a foreign language through musical texts (songs) can have an impac...
15 صفحه اولذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Fusion Engineering and Design
سال: 2021
ISSN: ['1873-7196', '0920-3796']
DOI: https://doi.org/10.1016/j.fusengdes.2021.112387