Please wait, while we are loading the content...
| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Konishi, K. Ikeda, Y. Seki, M. Imai, T. Honda, M. Yokokura, K. Sawahata, M. Sato, M. Suganuma, K. Ushigusa, K. Uehara, K. |
| Copyright Year | 1989 |
| Description | Author affiliation: JAERI, Ibaraki, Japan (Konishi, K.; Ikeda, Y.; Seki, M.; Imai, T.; Honda, M.; Yokokura, K.; Sawahata, M.; Sato, M.; Suganuma, K.; Ushigusa, K.; Uehara, K.) |
| Abstract | A multijunction-type launcher was installed on the JAERI (Japan Atomic Energy Research Institute) Tokamak-60 (JT-60). It is composed of 32 modules consisting of 96 secondary waveguides, in which E-plane junctions are used to divide each main waveguide into three secondary waveguides at its grill mouth. The waveguides are equipped with geometrical phase shifters yielding 70 degrees of phase shift in order to launch a peak parallel refractive index (N/sub /// peak) of 1-2.5 at 2 GHz. In the course of fabricating the multijunction launcher, the main technological problem was to fabricate multijunction modules with good RF properties (phase angle, power dividing ratio, etc.). A TIG (tungsten inert gas) welding method was adopted after a study of applicable fabrication methods. The phase shift and the power dividing ratio were verified to be 70 degrees +or-10 degrees and 1/3+or-1/15, respectively. The N/sub /// spectrum of the multijunction launcher calculated from measured values of phase shift was not so different from the design value. Using a test module, the authors also performed a high-power transmission test up to a power level of approximately 700 kW without breakdown. After installation of the multijunction launcher in the JT-60 tokamak, it was quickly conditioned up to a power level of 2.75 MW and maximum current drive efficiency eta /sub CD/ of 3.4*10/sup 19/ M/sup -2/A/W. Experimental results verify the adequacy of the launcher's method of fabrication and its satisfaction of requirements.< |
| Starting Page | 207 |
| Ending Page | 210 |
| File Size | 352957 |
| Page Count | 4 |
| File Format | |
| DOI | 10.1109/FUSION.1989.102209 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1989-10-02 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Fabrication Waveguide junctions Testing Mouth Phase shifters Refractive index Radio frequency Tungsten Welding Phase measurement |
| Content Type | Text |
| Resource Type | Article |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
| Sl. | Authority | Responsibilities | Communication Details |
|---|---|---|---|
| 1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
| 2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
| 3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
| 4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
| 5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
| 6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
| 7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
| 8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
| 9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
|
Loading...
|