title: ÐÐ¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÑÐµÐ¶Ð¸Ð¼Ð° Ñ Ð¸Ð·Ð»ÑÑÐ°ÑÑÐµÐ¹ Ð¥-ÑÐ¾ÑÐºÐ¾Ð¹ Ð² ÑÐ¾ÐºÐ°Ð¼Ð°ÐºÐµ-ÑÐµÐ°ÐºÑÐ¾ÑÐµ CFETR
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Modeling of radiative X-point regime in tokamak-reactor CFETR
Creators: name: Ð¨ÑÑÑÑÑÐ½Ð¾Ð², ÐÐ¸ÐºÐ¸ÑÐ°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2022
Subjects: ÐÐ»Ð°Ð·Ð¼Ð° (ÑÐ¸Ð·.)
ÐÐ¾Ð¼Ð¿ÑÑÑÐµÑÐ½Ð¾Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
ÑÐ¾ÐºÐ°Ð¼Ð°Ðº
ÑÐµÐ¶Ð¸Ð¼ Ñ Ð¸Ð·Ð»ÑÑÐ°ÑÑÐµÐ¹ Ð¥-ÑÐ¾ÑÐºÐ¾Ð¹
tokamak
radiative X-point regime

description: Ð¢ÐµÐ¼Ð° ÑÐ°Ð±Ð¾ÑÑÂ Â«ÐÐ¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÑÐµÐ¶Ð¸Ð¼Ð° Ñ Ð¸Ð·Ð»ÑÑÐ°ÑÑÐµÐ¹ Ð¥-ÑÐ¾ÑÐºÐ¾Ð¹ Ð² ÑÐ¾ÐºÐ°Ð¼Ð°ÐºÐµ-ÑÐµÐ°ÐºÑÐ¾ÑÐµ CFETRÂ». ÐÐ´Ð½Ð¸Ð¼ Ð¸Ð· Ð¾ÑÐ½Ð¾Ð²Ð½ÑÑ Ð²Ð¾Ð¿ÑÐ¾ÑÐ¾Ð² Ð² ÑÐ°Ð±Ð¾ÑÐµ ÑÐ¾ÐºÐ°Ð¼Ð°ÐºÐ° ÑÐ²Ð»ÑÐµÑÑÑ ÑÐ½Ð¸Ð¶ÐµÐ½Ð¸Ðµ ÑÐµÐ¿Ð»Ð¾Ð²ÑÑ Ð½Ð°Ð³ÑÑÐ·Ð¾Ðº Ð½Ð° ÑÑÐµÐ½ÐºÐ¸ ÐºÐ°Ð¼ÐµÑÑ ÑÐ¾ÐºÐ°Ð¼Ð°ÐºÐ°. ÐÐ»Ñ ÑÑÐ¾Ð³Ð¾ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·ÑÐµÑÑÑ Ð´Ð¸Ð²ÐµÑÑÐ¾Ñ, ÐºÑÐ´Ð° Ð¸Ð·-Ð·Ð° Ð¼Ð°Ð³Ð½Ð¸ÑÐ½Ð¾Ð¹ ÐºÐ¾Ð½ÑÐ¸Ð³ÑÑÐ°ÑÐ¸Ð¸ Ð¿ÑÐ¸ÑÐ¾Ð´ÑÑ Ð¿Ð¾ÑÐ¾ÐºÐ¸ ÑÐ½ÐµÑÐ³Ð¸Ð¸ Ð¸Ð· Ð·Ð¾Ð½Ñ ÑÐ´ÐµÑÐ¶Ð°Ð½Ð¸Ñ, Ð¿ÑÐ¾ÑÐµÐ´ÑÐ¸Ðµ ÑÐµÐ¿Ð°ÑÐ°ÑÑÐ¸ÑÑ. ÐÐ´Ð½Ð°ÐºÐ¾, Ð¼Ð°ÐºÑÐ¸Ð¼Ð°Ð»ÑÐ½ÑÐµ Ð½Ð°Ð³ÑÑÐ·ÐºÐ¸ Ð½Ð° Ð´Ð¸Ð²ÐµÑÑÐ¾Ñ ÑÐ¾Ð¶Ðµ Ð¾Ð³ÑÐ°Ð½Ð¸ÑÐµÐ½Ñ. ÐÐ»Ñ ITER qoutmax=10 ÐÐÑ/Ð¼2, Ð° Ð´Ð»Ñ Ð±ÑÐ´ÑÑÐµÐ³Ð¾ Ð¿ÑÐ¾ÑÐ¾ÑÐ¸Ð¿Ð° ÑÐµÑÐ¼Ð¾ÑÐ´ÐµÑÐ½Ð¾Ð³Ð¾ ÑÐµÐ°ÐºÑÐ¾ÑÐ° DEMO qoutmax=5ÐÐÑ/Ð¼2. Ð¡ÐµÐ¹ÑÐ°Ñ Ð´Ð»Ñ Ð·Ð°ÑÐ¸ÑÑ Ð´Ð¸Ð²ÐµÑÑÐ¾ÑÐ° Ð¸ÑÐ¿Ð¾Ð»ÑÐ·ÑÐµÑÑÑ Ð½Ð°Ð¿ÑÑÐº Ð¿ÑÐ¸Ð¼ÐµÑÐ¸ (Ð°Ð·Ð¾Ñ, Ð½ÐµÐ¾Ð½, Ð°ÑÐ³Ð¾Ð½), Ð·Ð° ÑÑÐµÑ ÐºÐ¾ÑÐ¾ÑÑÑ Ð¿ÑÐ¾Ð¸ÑÑÐ¾Ð´Ð¸Ñ Ð¿ÐµÑÐµÐ¸Ð·Ð»ÑÑÐµÐ½Ð¸Ðµ Ð±Ð¾Ð»ÑÑÐµÐ¹ Ð´Ð¾Ð»Ð¸ ÑÐ½ÐµÑÐ³Ð¸Ð¸ Ð² Ð´Ð¸Ð²ÐµÑÑÐ¾ÑÐ½Ð¾Ð¹ Ð¾Ð±Ð»Ð°ÑÑÐ¸. ÐÐ´Ð½Ð°ÐºÐ¾, Ð¿Ð¾ Ð¾ÑÐµÐ½ÐºÐ°Ð¼ Ð´Ð»Ñ DEMO Ð¼Ð°ÐºÑÐ¸Ð¼Ð°Ð»ÑÐ½ÑÐ¹ Ð¿Ð¾ÑÐ¾Ðº, ÐºÐ¾ÑÐ¾ÑÑÐ¹ Ð´Ð¾Ð»Ð¶ÐµÐ½ Ð¿ÑÐ¾ÑÐ¾Ð´Ð¸ÑÑ ÑÐµÑÐµÐ· ÑÐµÐ¿Ð°ÑÐ°ÑÑÐ¸ÑÑ, Ð´Ð»Ñ ÑÐ°Ð±Ð¾ÑÑ ÑÐ¾ÐºÐ°Ð¼Ð°ÐºÐ° ÑÐ°Ð²ÐµÐ½ 160 ÐÐÑ, Ð¿ÑÐ¸ ÑÐ¾Ð¼, ÑÑÐ¾ Ð² ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ ÑÐµÑÐ¼Ð¾ÑÐ´ÐµÑÐ½Ð¾Ð³Ð¾ ÑÐ¸Ð½ÑÐµÐ·Ð° ÑÐ°ÐºÐ¾Ð¹ Ð¿Ð¾ÑÐ¾Ðº Ð±ÑÐ´ÐµÑ Ð´Ð¾ÑÑÐ¸Ð³Ð°ÑÑ 400 ÐÐÑ. ÐÐ´Ð½Ð¸Ð¼ Ð¸Ð· Ð²Ð°ÑÐ¸Ð°Ð½ÑÐ¾Ð² ÑÐµÑÐµÐ½Ð¸Ñ Ð´Ð°Ð½Ð½Ð¾Ð¹ Ð¿ÑÐ¾Ð±Ð»ÐµÐ¼Ñ ÑÐ²Ð»ÑÐµÑÑÑ Ð±Ð¾Ð»ÑÑÐ¾Ð¹ Ð½Ð°Ð¿ÑÑÐº Ð¿ÑÐ¸Ð¼ÐµÑÐ¸, Ð¸Ð·-Ð·Ð° ÑÐµÐ³Ð¾ Ð¾Ð½Ð° Ð±ÑÐ´ÐµÑ Ð¿ÑÐ¾Ð½Ð¸ÐºÐ°ÑÑ ÑÐµÑÐµÐ· ÑÐµÐ¿Ð°ÑÐ°ÑÑÐ¸ÑÑ Ð¸ Ð¸Ð·Ð»ÑÑÐ°ÑÑ Ð²Ð½ÑÑÑÐ¸ Ð½ÐµÐµ. ÐÐ°Ð½Ð½ÑÐ¹ ÑÐµÐ¶Ð¸Ð¼ Ð½Ð°Ð·ÑÐ²Ð°ÐµÑÑÑ ÑÐµÐ¶Ð¸Ð¼Ð¾Ð¼ Ñ Ð¸Ð·Ð»ÑÑÐ°ÑÑÐµÐ¹ Ð¥-ÑÐ¾ÑÐºÐ¾Ð¹. ÐÐ½ Ð½Ð°Ð±Ð»ÑÐ´Ð°ÐµÑÑÑ Ð½Ð° ÑÐ¾Ð²ÑÐµÐ¼ÐµÐ½Ð½ÑÑ ÑÐ¾ÐºÐ°Ð¼Ð°ÐºÐ°Ñ, ÑÐ°ÐºÐ¸Ñ ÐºÐ°Ðº ASDEX Upgrade, JET Ð¸ ÑÐ¿ÐµÑÐ½Ð¾ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÑÐµÑÑÑ ÑÐ¸ÑÐ»ÐµÐ½Ð½ÑÐ¼ ÐºÐ¾Ð´Ð¾Ð¼ SOLPS-ITER Ð´Ð»Ñ ASDEX Upgrade. Ð ÑÐ¾ Ð¶Ðµ Ð²ÑÐµÐ¼Ñ Ð½ÐµÐ¸Ð·Ð²ÐµÑÑÐ½Ð¾ Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ Ð»Ð¸ ÐµÐ³Ð¾ Ð¿Ð¾Ð»ÑÑÐµÐ½Ð¸Ðµ Ð² Ð±ÑÐ´ÑÑÐ¸Ñ ÑÐ¾ÐºÐ°Ð¼Ð°ÐºÐ°Ñ ÑÐµÐ°ÐºÑÐ¾ÑÐ°Ñ, ÑÐ°ÐºÐ¸Ñ ÐºÐ°Ðº CFETR, DEMO.Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð±ÑÐ» Ð¿Ð¾Ð»ÑÑÐµÐ½ Ð² Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ð¸ ÑÐ¸ÑÐ»ÐµÐ½Ð½ÑÐ¼ ÐºÐ¾Ð´Ð¾Ð¼ SOLPS-ITER ÑÐµÐ¶Ð¸Ð¼ Ñ Ð¸Ð·Ð»ÑÑÐ°ÑÑÐµÐ¹ Ð¥-ÑÐ¾ÑÐºÐ¾Ð¹ Ð´Ð»Ñ ÑÐ¾ÐºÐ°Ð¼Ð°ÐºÐ°-ÑÐµÐ°ÐºÑÐ¾ÑÐ° CFETR. Ð Ð´Ð°Ð½Ð½Ð¾Ð¼ ÑÐµÐ¶Ð¸Ð¼Ðµ Ð½Ð°Ð±Ð»ÑÐ´Ð°ÐµÑÑÑ ÑÐ¸Ð»ÑÐ½Ð¾Ðµ Ð¿Ð°Ð´ÐµÐ½Ð¸Ðµ Ð¿Ð¾ÑÐ¾ÐºÐ¾Ð² ÑÐ½ÐµÑÐ³Ð¸Ð¸ Ð²Ð½ÑÑÑÐ¸ ÑÐµÐ¿Ð°ÑÐ°ÑÑÐ¸ÑÑ Ñ 770 ÐÐÑ Ð´Ð¾ 0.1 ÐÐÑ Ð½Ð° Ð¼Ð°ÑÑÑÐ°Ð±Ðµ 4.5 ÑÐ¼. ÐÐ° Ð´Ð¸Ð²ÐµÑÑÐ¾ÑÐµ Ð´Ð¾ÑÑÐ¸Ð³Ð°ÐµÑÑÑ ÑÐµÐ¶Ð¸Ð¼ Ð¾ÑÑÑÐ²Ð° Ñ Â qoutmax=700 KÐÑ/Ð¼2. ÐÐ¸Ðº Ð¸Ð·Ð»ÑÑÐµÐ½Ð¸Ñ ÑÐ¼ÐµÑÐµÐ½ Ð½Ð° Ð²Ð½ÐµÑÐ½Ð¸Ð¹ Ð¾Ð±Ð²Ð¾Ð´, Ð¸Ð·-Ð·Ð° ÑÐ¾Ð³Ð¾, ÑÑÐ¾ Ð² ÑÑÐ¾Ð¹ Ð¾Ð±Ð»Ð°ÑÑÐ¸ Te=11 ÑÐ, ÑÑÐ¾ ÑÐ²Ð»ÑÐµÑÑÑ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÐ¾Ð¹, Ð¿ÑÐ¸ ÐºÐ¾ÑÐ¾ÑÐ¾Ð¹ Ð¸Ð·Ð»ÑÑÐ°ÑÐµÐ»ÑÐ½Ð°Ñ ÑÐ¿Ð¾ÑÐ¾Ð±Ð½Ð¾ÑÑÑ Ð°ÑÐ³Ð¾Ð½Ð° Ð¼Ð°ÐºÑÐ¸Ð¼Ð°Ð»ÑÐ½Ð°. ÐÐ°Ð±Ð»ÑÐ´Ð°ÐµÑÑÑ Ð¾ÑÑÑÑÑÑÐ²Ð¸Ðµ Ð¿ÑÐ¾ÑÐµÐºÐ°Ð½Ð¸Ñ ÑÐ¾ÐºÐ° Ð² ÑÐ¾Ð»Ð¾Ð´Ð½Ð¾Ð¹ Ð¾Ð±Ð»Ð°ÑÑÐ¸, Ð²ÐµÑÑ Ð¾ÑÐ½Ð¾Ð²Ð½Ð¾Ð¹ ÑÐ¾Ðº ÑÐµÑÐµÑ ÑÐ¾Ð»ÑÐºÐ¾ Ð¿Ð¾ Ð³Ð¾ÑÑÑÐµÐ¼ Ð¿Ð¾Ð²ÐµÑÑÐ½Ð¾ÑÑÑÐ¼.Â Ð Ð°Ð´Ð¸Ð°Ð»ÑÐ½Ð¾Ðµ ÑÐ»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¾Ðµ Ð¿Ð¾Ð»Ðµ ÐºÐ°ÑÐµÑÑÐ²ÐµÐ½Ð½Ð¾ Ð²ÑÐ³Ð»ÑÐ´Ð¸Ñ ÐºÐ°Ðº Ð½ÐµÐ¾ÐºÐ»Ð°ÑÑÐ¸ÑÐµÑÐºÐ¾Ðµ Ð±ÐµÐ· ÑÐ²Ð½ÑÑ Ð¸Ð·Ð¼ÐµÐ½ÐµÐ½Ð¸Ð¹.
description: The subject of the graduate qualification work is "Modeling of radiative X-point regime in tokamak-reactor CFETR". Surface protection from heat fluxes is the one of the main issues of tokamak design. Divertor of future thermonuclear reactor DEMO can handle only qoutmax=5 MW/m2. Impurity seeding such as argon, nitrogen, neon, is used to protect divertor. They radiate in divertor area and lead to detachment. However, Demo divertor plates can handle only 160 MW, while heat fluxes can reach 400 MW during fusion. To decrease such fluxes, huge impurity seeding can be used. In this case impurity starts to radiate in the area above X-point. This is called radiative X-point regime. It is observed on tokamaks such as ASDEX Upgrade and JET. This regime can lead to absence of ELM. Also it decreases heat fluxes and doesn't deteriorate time confinement significantly. All of this factors make the regime promising for the future thermonuclear power plants. Although it is unknown, whether it exists on machines such as DEMO, CFETR.The paper presents results of CFETR edge plasma modeling. SOLPS-ITER package was used for this modeling. Radiative X-point regime is achieved in the modeling with high argon density. Radiative spot takes place above the X-point and it is shifted in the low field side area. Radial heat fluxes are decreased from 770 MW at core boundary to 0.1 MW at the separatrix. Electron temperature in the maximum of radiation area is Te=11Â eV. The temperature corresponds to maximum of Lz. There is a detachment on the divertor: qoutmax=700 kW/m2. There is absence of current flow in cold area above X-point. Radial electric field differs from neoclassical radial electric field, but doesn't change its sign as was observed in ASDEX Upgrade modeling.