Pellet fueling technology development leading to efficient fueling of ITER burning plasmas
Pellet fueling technology development leading to efficient fueling of ITER burning plasmas
复制标题
颗粒燃料技术的开发可实现 ITER 燃烧等离子体的高效燃料供给
DOI：
10.1063/1.1865052
复制
发表时间：
2004
影响因子：
2.2
通讯作者：
P. Parks
中科院分区：
文献类型：
--
作者：
L. Baylor;S. Combs;T. Jernigan;W. Houlberg;L. Owen;D. Rasmussen;S. Maruyama;P. Parks
颗粒注入是ITER [ITER技术基础2002 ITER EDA文件系列（维也纳：IAEA）]燃烧等离子体的堆芯燃料的主要燃料技术。用氘和氚D-T进行高效的核心等离子体燃料是实现高聚变增益的必要条件，而用气体燃料是无法实现的。在今天的托卡马克上，从内壁注入颗粒已经被证明可以提供有效的燃料，并计划在ITER上使用。利用Parks E×B漂移模型对颗粒内壁喷射的燃料沉积进行建模，结果表明颗粒具有在分离矩阵内良好燃烧的能力。气体加注计算表明，由于密度大、刮脱层宽，中性穿透能力很差。同位素混合D-T球团可以提供有效的氚燃料，与气体膨化相比，可以最大限度地减少氚壁负荷。目前，ITER内壁导管设计的性能正在测试中，初步结果表明，微球…
Pellet injection is the primary fueling technique planned for core fueling of ITER [ITER Technical Basis 2002 ITER EDA Documentation Series (Vienna: IAEA)] burning plasmas. Efficient core plasma fueling with deuterium and tritium D–T is a requirement for achieving high fusion gain and it cannot be achieved with gas fueling. Injection of pellets from the inner wall has been shown on present day tokamarks to provide efficient fueling and is planned for use on ITER. Modeling of the fueling deposition from inner wall pellet injection using the Parks E×B drift model indicates that pellets have the capability to fuel well inside the separatrix. Gas fueling calculations show very poor neutral penetration due to the high density and wide scrape off layer. Isotopically mixed D–T pellets can provide efficient tritium fueling that will minimize tritium wall loading when compared to gas puffing. Currently the performance of the ITER inner wall guide tube design is under test with initial results indicating that pelle...