NDLI: Effect of Thermal Loading on <formula formulatype=inline><tex Notation=TeX>${rm Nb}_{3}{rm Sn}$</tex></formula> CICC Performance

Content Provider	IEEE Xplore Digital Library
Author	March, S.A. Bruzzone, P. Stepanov, B. Bessette, D. Jewell, M.
Copyright Year	2002
Abstract	The ITER CICC will undergo a number of cool-down and warm-up cycles over the lifetime of the plant. The standard SULTAN based ITER conductor qualification test normally includes one thermal cycle in the test sequence. In many samples a performance degradation was observed following this thermal loading. In order to investigate the effect of multiple thermal cycles on the TF conductor short sample, additional repeated thermal cycles to liquid nitrogen temperature were carried out on the left leg of the CNTF3 sample and the JATF5 sample. Thermal cycles using SULTAN are very time consuming, about four days, with a corresponding cost of around 32 kEuro. Ten thermal cycles will give an estimation of the degradation upon repeated thermal loading, but would require a prohibitive amount of time in SULTAN, and therefore cause a significant delay in the testing of other time critical samples. As a large fraction of the change in thermal contraction occurs between room temperature and liquid nitrogen temperature, a purpose made facility and program was developed. This ad-hoc facility allowed faster, more cost effective thermal cycles that crucially did not interfere with SULTAN's ongoing test program. Cooling and heating was provided by means of forced flow nitrogen. The sample was contained within a vacuum to pre- vent the formation of moisture or ice. During warm-up, a heater distributed around the CNTF3A was also used. These cycles were performed both before and after electromagnetic loading. The results of these tests indicated that thermal loading before the first electromagnetic load cycle did not result in a worsening of the conductor performance. The tests following repeated thermal cycling after electromagnetic loading show a thermal cycle causes a performance degradation but a large number of consecutive thermal cycles do not appear to have a significant effect.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	4803604
Ending Page	4803604
Page Count	1
File Size	916181
File Format	PDF
ISSN	10518223
Volume Number	22
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Thermal loading Conductors Loading Thermal conductivity Nitrogen Thermal degradation Temperature measurement thermal cycling CICC ITER SULTAN TF
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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

Test Result of a Full-Size ${rm Nb}_{3}{rm Sn}$ Conductor Developed for the ITER TF Coils

Development of the ${rm Nb}_{3}{rm Sn}$ Bronze Strand of TF Conductor Sample for Testing in SULTAN Facility

Conductor Performance Qualification of TFKO3 Sample for ITER TF Magnet

Methods, Accuracy and Reliability of ITER Conductor Tests in SULTAN

Neutron Diffraction Measurements of Internal Strain in ${rm Nb}_{3}{rm Sn}$ Cable-In-Conduit Conductors

Performance of Japanese $hbox{Nb}_{3}hbox{Sn}$ Conductors for ITER Toroidal Field Coils

$I_{rm c}$ Measurements on ${rm Nb}_{3}{rm Sn}$ Strands Extracted From ITER CICC Prototypes

The Results of Russian ITER TF Conductor Sample Test in SULTAN

Role of the Cross Section Geometry in Rectangular ${rm Nb}_{3}{rm Sn}$ CICC Performances

Effect of Thermal Loading on ${rm Nb}_{3}{rm Sn}$ CICC Performance

Similar Documents

Test Result of a Full-Size ${rm Nb}_{3}{rm Sn}$ Conductor Developed for the ITER TF Coils

Development of the ${rm Nb}_{3}{rm Sn}$ Bronze Strand of TF Conductor Sample for Testing in SULTAN Facility

Conductor Performance Qualification of TFKO3 Sample for ITER TF Magnet

Methods, Accuracy and Reliability of ITER Conductor Tests in SULTAN

Neutron Diffraction Measurements of Internal Strain in ${rm Nb}_{3}{rm Sn}$ Cable-In-Conduit Conductors

Performance of Japanese $hbox{Nb}_{3}hbox{Sn}$ Conductors for ITER Toroidal Field Coils

$I_{rm c}$ Measurements on ${rm Nb}_{3}{rm Sn}$ Strands Extracted From ITER CICC Prototypes

The Results of Russian ITER TF Conductor Sample Test in SULTAN

Role of the Cross Section Geometry in Rectangular ${rm Nb}_{3}{rm Sn}$ CICC Performances

Effect of Thermal Loading on ${rm Nb}_{3}{rm Sn}$ CICC Performance