首页 > 最新文献

Fusion Science and Technology最新文献

英文 中文
Integration of a Micro-Channel Reactor in a CECE Process for H2 Removal from the O2 Stream Produced by the H2 Generator 微通道反应器在CECE工艺中的集成,用于从H2发生器产生的O2流中去除H2
IF 0.9 4区 工程技术 Q3 NUCLEAR SCIENCE & TECHNOLOGY Pub Date : 2023-11-17 DOI: 10.1080/15361055.2023.2273043
Alina Niculescu, Gheorghe Bulubașa, George Ana, Ciprian Bucur, Maria Crăciun, Anisia Bornea
A hydrogen generator is used in the combined electrolysis catalytic exchange process (CECE) for low-level tritiated water detritiation as a source of H2 (Q2) for the liquid-phase catalytic exchange...
氢发生器用于联合电解催化交换工艺(CECE)中,作为液相催化交换H2 (Q2)的来源,用于低氚化水的去除。
{"title":"Integration of a Micro-Channel Reactor in a CECE Process for H2 Removal from the O2 Stream Produced by the H2 Generator","authors":"Alina Niculescu, Gheorghe Bulubașa, George Ana, Ciprian Bucur, Maria Crăciun, Anisia Bornea","doi":"10.1080/15361055.2023.2273043","DOIUrl":"https://doi.org/10.1080/15361055.2023.2273043","url":null,"abstract":"A hydrogen generator is used in the combined electrolysis catalytic exchange process (CECE) for low-level tritiated water detritiation as a source of H2 (Q2) for the liquid-phase catalytic exchange...","PeriodicalId":12626,"journal":{"name":"Fusion Science and Technology","volume":"1528 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138519839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigations on 3He: Hydrogen Isotope Separation Employing Palladium/Silver Membranes 钯/银膜分离3He:氢同位素的研究
IF 0.9 4区 工程技术 Q3 NUCLEAR SCIENCE & TECHNOLOGY Pub Date : 2023-11-17 DOI: 10.1080/15361055.2023.2271242
Gheorghe Bulubasa, Alina Niculescu, George Ana, Ciprian Bucur, Iuliana Ștefan, Maria Crăciun, Anisia Bornea
Tritium resulting from separation processes is being stored in metal hydrides. In time, because of radioactive decay, tritium converts into 3He, which accumulates in the storage vessel. The recover...
分离过程产生的氚被储存在金属氢化物中。随着时间的推移,由于放射性衰变,氚转化为3He,并在储存容器中积累。恢复……
{"title":"Investigations on 3He: Hydrogen Isotope Separation Employing Palladium/Silver Membranes","authors":"Gheorghe Bulubasa, Alina Niculescu, George Ana, Ciprian Bucur, Iuliana Ștefan, Maria Crăciun, Anisia Bornea","doi":"10.1080/15361055.2023.2271242","DOIUrl":"https://doi.org/10.1080/15361055.2023.2271242","url":null,"abstract":"Tritium resulting from separation processes is being stored in metal hydrides. In time, because of radioactive decay, tritium converts into 3He, which accumulates in the storage vessel. The recover...","PeriodicalId":12626,"journal":{"name":"Fusion Science and Technology","volume":"29 2","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138519827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study on Tritium Permeation from the Primary to the Secondary Water Coolant for Fusion Reactors 核聚变反应堆主水冷剂向二次水冷剂氚渗透的研究
4区 工程技术 Q3 NUCLEAR SCIENCE & TECHNOLOGY Pub Date : 2023-11-09 DOI: 10.1080/15361055.2023.2271228
Akito Ipponsugi, Kazunari Katayama, Taku Matsumoto, Shogo Iwata, Makoto Oya, Youji Someya
AbstractSeveral fusion plants plan to utilize two high-temperature and high-pressurized water coolant systems. Because of the high hydrogen-isotope mobility in high-temperature metal, tritium will inevitably transfer from the plasma side to the secondary coolant through the primary coolant. From the viewpoints of fuel control, tritium safety, and social acceptance, it is compulsory to investigate the tritium concentration dependence of permeation phenomena experimentally. Therefore, this study conducted a protium permeation experiment instead of tritium, which mocked the situation where the tritium concentration in the primary loop was extremely high. Considering the results in the previous tritium permeation research by the present authors, the tritium permeation behavior was likely proportional to the first power of the tritium concentration. Then, based on these experiments and references regarding the tritium permeation rate and water detritiation system (WDS) design, tritium concentration was computed in both loops. In this calculation condition, the primary and secondary loops reached about 0.4 TBq/kg and 167 MBq/kg during 3-year operations, respectively. Also, it was found that the required feed rate to keep the tritium concentration at 1 TBq/kg was 46.5 kg/h, which is less than the existing WDS specification.Keywords: Tritium permeationprotium permeationwater to waterInconel 600water detritiation system Disclosure StatementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by QST Research Collaboration for Fusion DEMO, JSPS KAKENHI Grant-in-Aid for Scientific Research (B) [JP22H01207], and JST SPRING, Grant Number [JPMJSP2136].
一些核聚变厂计划采用两种高温高压水冷却剂系统。由于高温金属中氢同位素的高迁移率,氚将不可避免地从等离子体侧通过一次冷却剂转移到二次冷却剂。从燃料控制、氚安全性和社会接受的角度出发,对氚浓度对渗透现象的依赖性进行实验研究是必要的。因此,本研究采用protium渗透实验代替tritium,模拟了初级回路中氚浓度极高的情况。考虑到本作者之前的氚渗透研究结果,氚的渗透行为可能与氚浓度的一次方成正比。然后,根据这些实验和参考文献,对氚的渗透速率和水降解系统(WDS)设计进行了计算,计算了两个回路的氚浓度。在此计算条件下,3年运行期间,主回路和次回路分别达到约0.4 TBq/kg和167 MBq/kg。同时,将氚浓度保持在1 TBq/kg所需的进料速率为46.5 kg/h,低于现有的WDS规格。关键词:氚渗透;protium渗透;水对水;本工作由QST聚变演示研究合作、JSPS KAKENHI科学研究资助(B) [JP22H01207]和JST SPRING资助号[JPMJSP2136]支持。
{"title":"Study on Tritium Permeation from the Primary to the Secondary Water Coolant for Fusion Reactors","authors":"Akito Ipponsugi, Kazunari Katayama, Taku Matsumoto, Shogo Iwata, Makoto Oya, Youji Someya","doi":"10.1080/15361055.2023.2271228","DOIUrl":"https://doi.org/10.1080/15361055.2023.2271228","url":null,"abstract":"AbstractSeveral fusion plants plan to utilize two high-temperature and high-pressurized water coolant systems. Because of the high hydrogen-isotope mobility in high-temperature metal, tritium will inevitably transfer from the plasma side to the secondary coolant through the primary coolant. From the viewpoints of fuel control, tritium safety, and social acceptance, it is compulsory to investigate the tritium concentration dependence of permeation phenomena experimentally. Therefore, this study conducted a protium permeation experiment instead of tritium, which mocked the situation where the tritium concentration in the primary loop was extremely high. Considering the results in the previous tritium permeation research by the present authors, the tritium permeation behavior was likely proportional to the first power of the tritium concentration. Then, based on these experiments and references regarding the tritium permeation rate and water detritiation system (WDS) design, tritium concentration was computed in both loops. In this calculation condition, the primary and secondary loops reached about 0.4 TBq/kg and 167 MBq/kg during 3-year operations, respectively. Also, it was found that the required feed rate to keep the tritium concentration at 1 TBq/kg was 46.5 kg/h, which is less than the existing WDS specification.Keywords: Tritium permeationprotium permeationwater to waterInconel 600water detritiation system Disclosure StatementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by QST Research Collaboration for Fusion DEMO, JSPS KAKENHI Grant-in-Aid for Scientific Research (B) [JP22H01207], and JST SPRING, Grant Number [JPMJSP2136].","PeriodicalId":12626,"journal":{"name":"Fusion Science and Technology","volume":" 85","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135241728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hard X-ray Measurement with LaBr 3 Detector for the Study of Runaway Electrons on the HL-2M Tokamak HL-2M托卡马克上失控电子的LaBr 3探测器硬x射线测量研究
4区 工程技术 Q3 NUCLEAR SCIENCE & TECHNOLOGY Pub Date : 2023-11-09 DOI: 10.1080/15361055.2023.2272538
Jinwen Zhang, Wei Zhao, Zuowei Wen, Lei Feng, Li Zhao, Lingfeng Wei, Xiang Chen, Guoliang Yuan
AbstractRunaway electrons (REs) generated during disruptions pose a significant safety threat to tokamaks, as they can melt and damage the plasma-facing components (PFCs). Therefore, studying RE behavior is crucial for fusion devices. The interaction between REs and the first wall/PFCs results in the emission of high-energy X-rays, known as bremsstrahlung. To investigate RE behavior, it is necessary to quantitatively evaluate the emission of hard X-rays. A real-time hard X-ray spectrometer, utilizing a LaBr3 detector, has been successfully developed for studying REs on the HL-2M tokamak. This spectrometer has a counting rate capability reaching 3 MHz, with an energy resolution of 3.3% at 662 keV (137Cs). The time resolution for energy spectrums is as short as 1 ms. During the HL-2M discharge, observations were made on the hard X-ray energy spectrum, and by analyzing the spectrum within the energy range of 250 keV to 750 keV, the temperature of the corresponding REs was deduced.Keywords: HL-2M tokamakhard X-ray spectrometerLaBr3 detector AcknowledgmentsIt is a pleasure to acknowledge the assistance from the Neutron Flux Monitor team of the Southwestern Institute of Physics.Disclosure StatementNo potential conflict of interest was reported by the authors.Additional informationFundingThis work is supported by the National MCF Energy Research and Development Program of the Ministry of Science and Technology of China [grant no. 2022YFE03080003].
干扰过程中产生的偏离电子对托卡马克的安全构成了重大威胁,因为它们会熔化和损坏面向等离子体的组件(pfc)。因此,研究RE行为对核聚变装置至关重要。REs与第一壁/PFCs之间的相互作用导致高能x射线的发射,称为轫致辐射。为了研究稀土的行为,有必要对硬x射线的发射进行定量评价。利用LaBr3探测器研制了一种实时硬x射线光谱仪,成功地用于HL-2M托卡马克上REs的研究。该光谱仪具有达到3 MHz的计数率能力,在662 keV (137Cs)下具有3.3%的能量分辨率。能谱的时间分辨率短至1ms。在HL-2M放电过程中,对硬x射线能谱进行了观测,通过分析250 ~ 750 keV能量范围内的能谱,推导出相应REs的温度。关键词:HL-2M托卡马哈德x射线光谱仪labr3探测器感谢西南物理研究所中子通量监测小组的帮助。披露声明作者未报告潜在利益冲突。本工作受科技部国家MCF能源研究与发展计划资助[批准号:no. 81111@166.com]。2022 yfe03080003]。
{"title":"Hard X-ray Measurement with LaBr <sub>3</sub> Detector for the Study of Runaway Electrons on the HL-2M Tokamak","authors":"Jinwen Zhang, Wei Zhao, Zuowei Wen, Lei Feng, Li Zhao, Lingfeng Wei, Xiang Chen, Guoliang Yuan","doi":"10.1080/15361055.2023.2272538","DOIUrl":"https://doi.org/10.1080/15361055.2023.2272538","url":null,"abstract":"AbstractRunaway electrons (REs) generated during disruptions pose a significant safety threat to tokamaks, as they can melt and damage the plasma-facing components (PFCs). Therefore, studying RE behavior is crucial for fusion devices. The interaction between REs and the first wall/PFCs results in the emission of high-energy X-rays, known as bremsstrahlung. To investigate RE behavior, it is necessary to quantitatively evaluate the emission of hard X-rays. A real-time hard X-ray spectrometer, utilizing a LaBr3 detector, has been successfully developed for studying REs on the HL-2M tokamak. This spectrometer has a counting rate capability reaching 3 MHz, with an energy resolution of 3.3% at 662 keV (137Cs). The time resolution for energy spectrums is as short as 1 ms. During the HL-2M discharge, observations were made on the hard X-ray energy spectrum, and by analyzing the spectrum within the energy range of 250 keV to 750 keV, the temperature of the corresponding REs was deduced.Keywords: HL-2M tokamakhard X-ray spectrometerLaBr3 detector AcknowledgmentsIt is a pleasure to acknowledge the assistance from the Neutron Flux Monitor team of the Southwestern Institute of Physics.Disclosure StatementNo potential conflict of interest was reported by the authors.Additional informationFundingThis work is supported by the National MCF Energy Research and Development Program of the Ministry of Science and Technology of China [grant no. 2022YFE03080003].","PeriodicalId":12626,"journal":{"name":"Fusion Science and Technology","volume":" 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135192187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Current Tracking and Circulating Current Suppression Super-Twisting Sliding Mode Control for Parallel Operation of EAST Fast Control Power Supply EAST快控电源并联运行的电流跟踪与循环抑制超扭滑模控制
4区 工程技术 Q3 NUCLEAR SCIENCE & TECHNOLOGY Pub Date : 2023-11-06 DOI: 10.1080/15361055.2023.2271226
Haihong Huang, Zhao Chen, Haixin Wang
AbstractTo quickly output sufficient current for plasma excitation control, parallel operation of a structure of multiple branches is adopted in the Experimental Advanced Superconducting Tokamak (EAST) fast control power supply. During the process of parallel operation of multiple branches in engineering, a larger inductance current sharing reactor is used to suppress the circulating current for the branches, which reduces the dynamic response speed of the output current and increases economic costs. In order to achieve cost savings and improve the dynamic response speed of the output current, the parallel branch current model of the EAST fast control power supply is analyzed, and the current of each branch is reconstructed into two parts: the current flowing to the load end and the circulating current flowing to other branches. Without changing the circuit structure and increasing the additional complex communication system for each branch, observation of the current flowing to the load end from each branch is achieved. Based on the observed current, a super-twisting sliding mode controller (STSMC) is designed to suppress the circulating current flowing through branches. To realize fast output of the branch current and circulating current suppression for the branches, a new STSMC with a linear term and parameter adaptive structure is designed, speeding up the convergence rate of the whole control system. The linear term and designed parameter adaptive structure based on the sliding mode system status ensure fast convergence speed and excellent control performance of the system. Simulation and experiments show that the designed control method can achieve fast output current control for each branch and that the tracking performance of the total output current is good. While reducing the inductance of the current sharing reactor, the circulating current for the branches is effectively suppressed compared with traditional control methods. The proposed method has great significance in cost savings and performance improvement in engineering practice applications.Keywords: EAST fast control power supplyparallel operationnew super-twisting sliding mode controlcirculating current suppression Disclosure StatementNo potential conflict of interest was reported by the author(s).Authors’ ContributionsChen and Huang wrote the main manuscript text, and Wang prepared other material. All authors reviewed the manuscript.Data Availability StatementThe data that support the findings of this study are available from the corresponding author upon reasonable request.Additional informationFundingThis work was supported by Regional Innovation and Development Joint Fund of National Natural Science Foundation of China [number U22A20225].
摘要为了快速输出足够的等离子体励磁控制电流,实验先进超导托卡马克(EAST)快速控制电源采用多支路并联结构。工程中在多支路并联运行过程中,采用较大电感共流电抗器抑制支路的循环电流,降低了输出电流的动态响应速度,增加了经济成本。为了达到节约成本和提高输出电流动态响应速度的目的,对EAST快控电源并联支路电流模型进行了分析,将各支路电流重构为流向负载端的电流和流向其他支路的循环电流两部分。在不改变电路结构和增加每个支路额外的复杂通信系统的情况下,可以实现对从每个支路流向负载端的电流的观察。基于观察到的电流,设计了超扭转滑模控制器(STSMC)来抑制通过支路的循环电流。为了实现支路电流的快速输出和支路的循环电流抑制,设计了一种具有线性项和参数自适应结构的新型STSMC,加快了整个控制系统的收敛速度。基于滑模系统状态的线性项和设计的参数自适应结构保证了系统的快速收敛速度和优良的控制性能。仿真和实验表明,所设计的控制方法能够实现对各支路输出电流的快速控制,并且对总输出电流具有良好的跟踪性能。与传统控制方法相比,在减小共流电抗器电感的同时,有效地抑制了支路的循环电流。该方法在工程实际应用中对节约成本和提高性能具有重要意义。关键词:EAST快速控制电源并联运行新型超扭滑模控制循环电流抑制披露声明作者未报道潜在利益冲突。作者的贡献:沈和黄撰写了主要的手稿文本,王准备了其他材料。所有作者都审阅了手稿。数据可用性声明支持本研究结果的数据可根据通讯作者的合理要求提供。本研究得到国家自然科学基金区域创新与发展联合基金资助[no . U22A20225]。
{"title":"Current Tracking and Circulating Current Suppression Super-Twisting Sliding Mode Control for Parallel Operation of EAST Fast Control Power Supply","authors":"Haihong Huang, Zhao Chen, Haixin Wang","doi":"10.1080/15361055.2023.2271226","DOIUrl":"https://doi.org/10.1080/15361055.2023.2271226","url":null,"abstract":"AbstractTo quickly output sufficient current for plasma excitation control, parallel operation of a structure of multiple branches is adopted in the Experimental Advanced Superconducting Tokamak (EAST) fast control power supply. During the process of parallel operation of multiple branches in engineering, a larger inductance current sharing reactor is used to suppress the circulating current for the branches, which reduces the dynamic response speed of the output current and increases economic costs. In order to achieve cost savings and improve the dynamic response speed of the output current, the parallel branch current model of the EAST fast control power supply is analyzed, and the current of each branch is reconstructed into two parts: the current flowing to the load end and the circulating current flowing to other branches. Without changing the circuit structure and increasing the additional complex communication system for each branch, observation of the current flowing to the load end from each branch is achieved. Based on the observed current, a super-twisting sliding mode controller (STSMC) is designed to suppress the circulating current flowing through branches. To realize fast output of the branch current and circulating current suppression for the branches, a new STSMC with a linear term and parameter adaptive structure is designed, speeding up the convergence rate of the whole control system. The linear term and designed parameter adaptive structure based on the sliding mode system status ensure fast convergence speed and excellent control performance of the system. Simulation and experiments show that the designed control method can achieve fast output current control for each branch and that the tracking performance of the total output current is good. While reducing the inductance of the current sharing reactor, the circulating current for the branches is effectively suppressed compared with traditional control methods. The proposed method has great significance in cost savings and performance improvement in engineering practice applications.Keywords: EAST fast control power supplyparallel operationnew super-twisting sliding mode controlcirculating current suppression Disclosure StatementNo potential conflict of interest was reported by the author(s).Authors’ ContributionsChen and Huang wrote the main manuscript text, and Wang prepared other material. All authors reviewed the manuscript.Data Availability StatementThe data that support the findings of this study are available from the corresponding author upon reasonable request.Additional informationFundingThis work was supported by Regional Innovation and Development Joint Fund of National Natural Science Foundation of China [number U22A20225].","PeriodicalId":12626,"journal":{"name":"Fusion Science and Technology","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135589398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thoughts on the H-Bomb Decision, Oppenheimer’s Loyalty/Security Hearing, and Vacating of the AEC Decision 对氢弹判决、奥本海默忠诚/安全听证会以及AEC判决的撤销的思考
4区 工程技术 Q3 NUCLEAR SCIENCE & TECHNOLOGY Pub Date : 2023-11-06 DOI: 10.1080/15361055.2023.2268405
T. E. Mason
This summer’s release of Oppenheimer, the major Hollywood movie by Christopher Nolan, has brought renewed attention to J. Robert Oppenheimer’s thoughts, concerns, and intentions regarding the U.S. pursuit of thermonuclear weapons. This paper provides context surrounding the 1949 recommendation of the Atomic Energy Commission’s General Advisory Committee, chaired by Oppenheimer, against a crash program for hydrogen bombs, a recommendation that would be used against him in the 1954 decision to revoke his security clearance. An appendix reproduces the April 5, 2022, letter from Los Alamos National Laboratory directors to the secretary of energy. In December 2022, Secretary of Energy Granholm vacated the original security review board decision.
今年夏天克里斯托弗·诺兰(Christopher Nolan)执导的好莱坞大片《奥本海默》(Oppenheimer)的上映,重新引起了人们对j·罗伯特·奥本海默(J. Robert Oppenheimer)对美国追求热核武器的想法、担忧和意图的关注。本文提供了1949年由奥本海默担任主席的原子能委员会总咨询委员会反对氢弹应急计划的建议的背景,该建议在1954年撤销他的安全许可的决定中被用来反对他。该报告的附录是洛斯阿拉莫斯国家实验室主任于2022年4月5日写给能源部长的信。2022年12月,能源部长格兰霍姆撤销了安全审查委员会最初的决定。
{"title":"Thoughts on the H-Bomb Decision, Oppenheimer’s Loyalty/Security Hearing, and Vacating of the AEC Decision","authors":"T. E. Mason","doi":"10.1080/15361055.2023.2268405","DOIUrl":"https://doi.org/10.1080/15361055.2023.2268405","url":null,"abstract":"This summer’s release of Oppenheimer, the major Hollywood movie by Christopher Nolan, has brought renewed attention to J. Robert Oppenheimer’s thoughts, concerns, and intentions regarding the U.S. pursuit of thermonuclear weapons. This paper provides context surrounding the 1949 recommendation of the Atomic Energy Commission’s General Advisory Committee, chaired by Oppenheimer, against a crash program for hydrogen bombs, a recommendation that would be used against him in the 1954 decision to revoke his security clearance. An appendix reproduces the April 5, 2022, letter from Los Alamos National Laboratory directors to the secretary of energy. In December 2022, Secretary of Energy Granholm vacated the original security review board decision.","PeriodicalId":12626,"journal":{"name":"Fusion Science and Technology","volume":"18 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135589404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The First Calculation of Comptonization 复合体的第一次计算
4区 工程技术 Q3 NUCLEAR SCIENCE & TECHNOLOGY Pub Date : 2023-10-30 DOI: 10.1080/15361055.2023.2260017
Jonathan I. Katz
{"title":"The First Calculation of Comptonization","authors":"Jonathan I. Katz","doi":"10.1080/15361055.2023.2260017","DOIUrl":"https://doi.org/10.1080/15361055.2023.2260017","url":null,"abstract":"","PeriodicalId":12626,"journal":{"name":"Fusion Science and Technology","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136103012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
High Heat Flux Testing of Brazed W/CuCrZr Monoblock in High Heat Flux Test Facility 高热流密度试验装置中钎焊W/CuCrZr块的高热流密度试验
4区 工程技术 Q3 NUCLEAR SCIENCE & TECHNOLOGY Pub Date : 2023-10-30 DOI: 10.1080/15361055.2023.2260536
Kedar Bhope, Vinay Menon, Sunil Belsare, Samir Khirwadkar, Rajamannar Swamy, Mayur Mehta, Premjit Singh Kongkham, Tushar Patel, Nikunj Patel, Prakash Mokariya
{"title":"High Heat Flux Testing of Brazed W/CuCrZr Monoblock in High Heat Flux Test Facility","authors":"Kedar Bhope, Vinay Menon, Sunil Belsare, Samir Khirwadkar, Rajamannar Swamy, Mayur Mehta, Premjit Singh Kongkham, Tushar Patel, Nikunj Patel, Prakash Mokariya","doi":"10.1080/15361055.2023.2260536","DOIUrl":"https://doi.org/10.1080/15361055.2023.2260536","url":null,"abstract":"","PeriodicalId":12626,"journal":{"name":"Fusion Science and Technology","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136102891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis of Erbium Deuterides via Deuterium Ion Implantation into Erbium Thin Films 铒薄膜注入氘离子合成氘化铒
4区 工程技术 Q3 NUCLEAR SCIENCE & TECHNOLOGY Pub Date : 2023-10-26 DOI: 10.1080/15361055.2023.2258002
J. Northall, M. S. B. Darby, A. Cooper, A. Hollingsworth, Y. Zayachuk, A. Wohlers, A. Simons, H. Smith
AbstractAn experimental study of a synthesis technique in which deuterium ions are implanted into thin films of erbium to form erbium deuterides is presented. Results from thermal desorption spectroscopy indicate the synthesis of multiple hydride phases has occurred, including ErD3 and ErD2. The findings also indicate that, for erbium deuteride synthesis via ion beam bombardment, elevated substrate temperatures are not required to promote deuterium uptake in the film. Stoichiometries of up to ErD0.21 were achieved for a 400-nm film exposed to a 1000-eV ion beam for 5 h at a deuterium ion fluence of 3.6 × 1022 m−2. Over the tested experimental conditions, deuterium uptake was found to scale proportionally with deuterium ion fluence and ion energy. The presence of deuterium in the film was confirmed by secondary ion mass spectrometry.Keywords: Deuteriumerbiumion implantationmaterials science Disclosure StatementNo potential conflict of interest was reported by the authors.Data Availability StatementThe data sets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.Additional informationFundingThe authors did not receive support from any other organization for the submitted work.
摘要本文介绍了将氘离子注入铒薄膜合成氘化铒的实验研究。热解吸光谱结果表明,合成了多种氢化物相,包括ErD3和ErD2。研究结果还表明,通过离子束轰击合成氘化铒时,不需要提高衬底温度来促进膜中氘的吸收。在氘离子浓度为3.6 × 1022 m−2的条件下,400 nm薄膜在1000 ev离子束下暴露5 h,其化学计量学达到了ErD0.21。在测试的实验条件下,发现氘吸收量与氘离子影响和离子能量成比例。二次离子质谱法证实了膜中氘的存在。关键词:氘植入材料科学披露声明作者未报告潜在利益冲突。数据可用性声明当前研究期间生成和/或分析的数据集可根据通讯作者的合理要求提供。其他信息资金:作者未获得任何其他组织对所提交工作的支持。
{"title":"Synthesis of Erbium Deuterides via Deuterium Ion Implantation into Erbium Thin Films","authors":"J. Northall, M. S. B. Darby, A. Cooper, A. Hollingsworth, Y. Zayachuk, A. Wohlers, A. Simons, H. Smith","doi":"10.1080/15361055.2023.2258002","DOIUrl":"https://doi.org/10.1080/15361055.2023.2258002","url":null,"abstract":"AbstractAn experimental study of a synthesis technique in which deuterium ions are implanted into thin films of erbium to form erbium deuterides is presented. Results from thermal desorption spectroscopy indicate the synthesis of multiple hydride phases has occurred, including ErD3 and ErD2. The findings also indicate that, for erbium deuteride synthesis via ion beam bombardment, elevated substrate temperatures are not required to promote deuterium uptake in the film. Stoichiometries of up to ErD0.21 were achieved for a 400-nm film exposed to a 1000-eV ion beam for 5 h at a deuterium ion fluence of 3.6 × 1022 m−2. Over the tested experimental conditions, deuterium uptake was found to scale proportionally with deuterium ion fluence and ion energy. The presence of deuterium in the film was confirmed by secondary ion mass spectrometry.Keywords: Deuteriumerbiumion implantationmaterials science Disclosure StatementNo potential conflict of interest was reported by the authors.Data Availability StatementThe data sets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.Additional informationFundingThe authors did not receive support from any other organization for the submitted work.","PeriodicalId":12626,"journal":{"name":"Fusion Science and Technology","volume":"70 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136377319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Design, Fabrication, and Test of a Prototype of Matrix Heat Exchanger for Cryogenic Distillation of Hydrogen Isotopes 氢同位素低温蒸馏基质热交换器原型的设计、制造和测试
4区 工程技术 Q3 NUCLEAR SCIENCE & TECHNOLOGY Pub Date : 2023-10-24 DOI: 10.1080/15361055.2023.2259238
Claudia Bogdan, Sebastian Brad, Horia Necula, Oleksandr Sirosh, Catalin Brill, Mihai Vijulie, Alin Lazar, Aleksandr Grafov
AbstractThe following properties are needed to increase the efficiency of refrigeration, liquefaction, and cryogenic separation cycles: Heat exchangers must have high effectiveness doubled by high compactness; small temperature differences between incoming and outgoing flows must be ensured to increase efficiency; there must be a large heat transfer surface, relative to the volume of the heat exchanger, to minimize heat loss; there must be a high heat transfer rate to reduce the transfer area; there must be a small pressure drop to reduce compression costs; and there must be high reliability with minimal maintenance. All these properties are entirely fulfilled by the designed matrix heat exchangers (MHEs). This paper presents the results of the research program developed by the team of the Cryogenic Laboratory from INC-DTCI ICSI Ramnicu Valcea, which included procedural stages of the realization and preliminary results of the characterization of the MHE-type heat exchanger in a narrow range of values to achieve a proper solution for a heat exchanger to be used for cryogenic purposes, such as cooling the gas mixture at the entrance of a distillation column of hydrogen isotopes and running at low pressure (typically regimes of 0.5 to 2.0 bars) and flows. Within several experimental campaigns, different assembly and testing techniques of the matrix heat exchanger (MHE) prototype were performed to achieve numerical data for the temperature and pressure drops along the heat exchanger and to verify ANSYS Fluent numerical simulation results. The results showed that for the designed and tested MHE prototype, a temperature drop of up to almost 230 K can be obtained at the established parameters correlated with pressure losses within a few millibars (the maximum recorded pressure drop is 80 mbars), small dimensions (64 mm high), and accessible weight (up to 2000 g).Keywords: Cryogenic distillationhydrogen isotopesheat transfermatrix heat exchangers Disclosure StatementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was carried out through the “Nucleu” Program [contract number 9N/2019], developed with the support of the Ministry of Research, Innovation and Digitalization [project number PN 19 11 01 04]—“Innovative CECE Process Solution for Promoting a New Decontamination Technology of Liquid Waste Poorly Concentrated in Tritium and for Recovery of Deuterium.”
摘要要提高制冷、液化和低温分离循环的效率,需要具备以下性能:热交换器必须具有高紧凑性的高效率;必须保证进出气流温差小,以提高效率;必须有一个大的传热面,相对于换热器的体积,以尽量减少热损失;必须有较高的传热速率,以减小传热面积;必须有较小的压降,以降低压缩成本;而且必须以最少的维护实现高可靠性。所设计的矩阵式换热器完全满足上述性能要求。本文介绍了incc - dtci ICSI Ramnicu Valcea低温实验室团队开发的研究项目的结果,其中包括实现的程序阶段和在窄范围内表征mhe型热交换器的初步结果,以获得用于低温目的的热交换器的适当解决方案。例如,在氢同位素精馏塔入口处冷却气体混合物,并在低压(通常为0.5至2.0巴)和流动下运行。在几个实验活动中,采用不同的装配和测试技术对矩阵换热器(MHE)原型进行了测试,以获得换热器沿线温度和压降的数值数据,并验证ANSYS Fluent数值模拟结果。结果表明,对于设计和测试的MHE原型,在确定的参数下,压力损失在几毫巴内(最大记录压降为80毫巴),尺寸小(高64毫米),可达重量(可达2000克),可以获得高达近230 K的温度下降。关键词:低温蒸馏氢同位素热传递矩阵热交换器披露声明作者没有报告潜在的利益冲突。这项工作是通过“核”计划(合同编号9N/2019)进行的,该计划是在研究、创新和数字化部(项目编号PN 19 11 01 04)的支持下制定的——“创新的CECE工艺解决方案,用于促进低浓度氚液体废物的新型去污技术和氘的回收。”
{"title":"Design, Fabrication, and Test of a Prototype of Matrix Heat Exchanger for Cryogenic Distillation of Hydrogen Isotopes","authors":"Claudia Bogdan, Sebastian Brad, Horia Necula, Oleksandr Sirosh, Catalin Brill, Mihai Vijulie, Alin Lazar, Aleksandr Grafov","doi":"10.1080/15361055.2023.2259238","DOIUrl":"https://doi.org/10.1080/15361055.2023.2259238","url":null,"abstract":"AbstractThe following properties are needed to increase the efficiency of refrigeration, liquefaction, and cryogenic separation cycles: Heat exchangers must have high effectiveness doubled by high compactness; small temperature differences between incoming and outgoing flows must be ensured to increase efficiency; there must be a large heat transfer surface, relative to the volume of the heat exchanger, to minimize heat loss; there must be a high heat transfer rate to reduce the transfer area; there must be a small pressure drop to reduce compression costs; and there must be high reliability with minimal maintenance. All these properties are entirely fulfilled by the designed matrix heat exchangers (MHEs). This paper presents the results of the research program developed by the team of the Cryogenic Laboratory from INC-DTCI ICSI Ramnicu Valcea, which included procedural stages of the realization and preliminary results of the characterization of the MHE-type heat exchanger in a narrow range of values to achieve a proper solution for a heat exchanger to be used for cryogenic purposes, such as cooling the gas mixture at the entrance of a distillation column of hydrogen isotopes and running at low pressure (typically regimes of 0.5 to 2.0 bars) and flows. Within several experimental campaigns, different assembly and testing techniques of the matrix heat exchanger (MHE) prototype were performed to achieve numerical data for the temperature and pressure drops along the heat exchanger and to verify ANSYS Fluent numerical simulation results. The results showed that for the designed and tested MHE prototype, a temperature drop of up to almost 230 K can be obtained at the established parameters correlated with pressure losses within a few millibars (the maximum recorded pressure drop is 80 mbars), small dimensions (64 mm high), and accessible weight (up to 2000 g).Keywords: Cryogenic distillationhydrogen isotopesheat transfermatrix heat exchangers Disclosure StatementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was carried out through the “Nucleu” Program [contract number 9N/2019], developed with the support of the Ministry of Research, Innovation and Digitalization [project number PN 19 11 01 04]—“Innovative CECE Process Solution for Promoting a New Decontamination Technology of Liquid Waste Poorly Concentrated in Tritium and for Recovery of Deuterium.”","PeriodicalId":12626,"journal":{"name":"Fusion Science and Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135315627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
Fusion Science and Technology
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1