| Records |
| Author |
Chen, P. S. |
| Title |
Infrared properties of barium stars |
Type |
Journal Article |
Year  |
2001 |
Publication |
Astron. Astrophys. |
Abbreviated Journal |
A&A |
| Volume |
372 |
Issue |
1 |
Pages |
245-248 |
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| ISSN |
0004-6361 |
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no |
| Call Number |
RPLAB @ s @ |
Serial |
415 |
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| Author |
Hsiao, F.Z.; Lin, M.C.; Wang, C.; Lee, D.S.; Chen, J.R.; Hilbert, B.; Praud, A. |
| Title |
The liquid helium cryogenic system for the superconducting cavity in SRRC |
Type |
Conference Article |
| Year |
2001 |
Publication |
Proc. Particle Accelerator Conference |
Abbreviated Journal |
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| Volume |
2 |
Issue |
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Pages |
1604-1606 |
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| Abstract |
A 500 MHz superconducting cavity will replace the current copper cavity and begin to operate in the beginning of the year 2003. A liquid helium cryogenic system provides the cavity at 4.5 K a cooling capacity of 255 W without LN2 pre-cooling and a liquefaction rate of 110 liter/hour with LN2 pre-cooling. A safety factor of 1.5 is used to estimate the heat load from the superconducting cavity and the heat loss from the transfer lines. With the LN2 pre-cooling, this cooling system provides a cooling capacity of up to 450 W to cool down the additional superconducting Landau cavity. The capacity of the system can be tuned using a frequency driver installed at the compressor station. The pressure fluctuations of the dewar and of the suction line are kept to the same stability requirement that of the cavity cryostat to minimize the influence in cavity operation. A shutdown period for maintenance of more than 8000 hours for the cryogenic system is expected without interfering with the continuous operation of the superconducting cavity. |
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RPLAB @ s @ |
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426 |
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| Author |
Ganzevles, W. F. M.; Gao, J. R.; de Korte, P. A. J.; Klapwijk, T. M. |
| Title |
Direct response of microstrip line coupled Nb THz hot-electron bolometer mixers |
Type |
Journal Article |
| Year |
2001 |
Publication |
Applied Physics Letters |
Abbreviated Journal |
Appl. Phys. Lett. |
| Volume |
79 |
Issue |
15 |
Pages |
2483-2485 |
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0003-6951 |
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no |
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Serial |
311 |
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| Author |
Kroug, M. |
| Title |
Hot electron bolometric mixers for a quasi-optical terahertz receiver |
Type |
Book Whole |
| Year |
2001 |
Publication |
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Issue |
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Ph.D. thesis |
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Chalmers University of Technology, Gothenburg, Sweden |
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310 |
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| Author |
Van Rudd, J.; Johnson, Jon L.; Mittleman, Daniel M. |
| Title |
Cross-polarized angular emission patterns from lens-coupled terahertz antennas |
Type |
Journal Article |
| Year |
2001 |
Publication |
J. Opt. Soc. Am. B |
Abbreviated Journal |
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| Volume |
18 |
Issue |
10 |
Pages |
1524 |
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| ISSN |
0740-3224 |
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no |
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Serial |
475 |
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