Continuously Tunable 250 GHz Gyrotron with a Double Disk Window for DNP-NMR Spectroscopy
In this paper, we describe the design and experimental results from the rebuild of a 250 GHz gyrotron used for Dynamic Nuclear Polarization enhanced Nuclear Magnetic Resonance spectroscopy on a 380 MHz spectrometer. Tuning bandwidth of approximately 2 GHz is easily achieved at a fixed magnetic field...
| Main Authors: | , , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
Springer-Verlag
2015
|
| Online Access: | http://hdl.handle.net/1721.1/94600 https://orcid.org/0000-0003-1589-832X https://orcid.org/0000-0001-9813-0177 |
| _version_ | 1826214338359197696 |
|---|---|
| author | Ni, Qing Zhe Barnes, Alexander Daviso, Eugenio Herzfeld, Judith Griffin, Robert Guy Guss, William C Jawla, Sudheer K. Temkin, Richard J |
| author2 | Massachusetts Institute of Technology. Department of Chemistry |
| author_facet | Massachusetts Institute of Technology. Department of Chemistry Ni, Qing Zhe Barnes, Alexander Daviso, Eugenio Herzfeld, Judith Griffin, Robert Guy Guss, William C Jawla, Sudheer K. Temkin, Richard J |
| author_sort | Ni, Qing Zhe |
| collection | MIT |
| description | In this paper, we describe the design and experimental results from the rebuild of a 250 GHz gyrotron used for Dynamic Nuclear Polarization enhanced Nuclear Magnetic Resonance spectroscopy on a 380 MHz spectrometer. Tuning bandwidth of approximately 2 GHz is easily achieved at a fixed magnetic field of 9.24 T and a beam current of 95 mA producing an average output power of >10 W over the entire tuning band. This tube incorporates a double disk output sapphire window in order to maximize the transmission at 250.58 GHz. DNP Signal enhancement of >125 is achieved on a [superscript 13]C-Urea sample using this gyrotron. |
| first_indexed | 2024-09-23T16:03:48Z |
| format | Article |
| id | mit-1721.1/94600 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T16:03:48Z |
| publishDate | 2015 |
| publisher | Springer-Verlag |
| record_format | dspace |
| spelling | mit-1721.1/946002022-10-02T06:02:56Z Continuously Tunable 250 GHz Gyrotron with a Double Disk Window for DNP-NMR Spectroscopy Ni, Qing Zhe Barnes, Alexander Daviso, Eugenio Herzfeld, Judith Griffin, Robert Guy Guss, William C Jawla, Sudheer K. Temkin, Richard J Massachusetts Institute of Technology. Department of Chemistry Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Plasma Science and Fusion Center Francis Bitter Magnet Laboratory (Massachusetts Institute of Technology) Jawla, Sudheer Kumar Ni, Qing Zhe Barnes, Alexander Guss, William Daviso, Eugenio Griffin, Robert Guy Temkin, Richard J. In this paper, we describe the design and experimental results from the rebuild of a 250 GHz gyrotron used for Dynamic Nuclear Polarization enhanced Nuclear Magnetic Resonance spectroscopy on a 380 MHz spectrometer. Tuning bandwidth of approximately 2 GHz is easily achieved at a fixed magnetic field of 9.24 T and a beam current of 95 mA producing an average output power of >10 W over the entire tuning band. This tube incorporates a double disk output sapphire window in order to maximize the transmission at 250.58 GHz. DNP Signal enhancement of >125 is achieved on a [superscript 13]C-Urea sample using this gyrotron. National Institutes of Health (U.S.) (Grant EB002804) National Institutes of Health (U.S.) (Grant EB003151) National Institutes of Health (U.S.) (Grant EB002026) National Institutes of Health (U.S.) (Grant EB001960) National Institutes of Health (U.S.) (Grant EB001035) National Institutes of Health (U.S.) (Grant EB001965) National Institutes of Health (U.S.) (Grant EB004866) 2015-02-18T18:09:30Z 2015-02-18T18:09:30Z 2012-11 2012-06 Article http://purl.org/eprint/type/JournalArticle 1866-6892 1866-6906 http://hdl.handle.net/1721.1/94600 Jawla, Sudheer, Qing Zhe Ni, Alexander Barnes, William Guss, Eugenio Daviso, Judith Herzfeld, Robert Griffin, and Richard Temkin. “Continuously Tunable 250 GHz Gyrotron with a Double Disk Window for DNP-NMR Spectroscopy.” J Infrared Milli Terahz Waves 34, no. 1 (November 15, 2012): 42–52. https://orcid.org/0000-0003-1589-832X https://orcid.org/0000-0001-9813-0177 en_US http://dx.doi.org/10.1007/s10762-012-9947-1 Journal of Infrared, Millimeter and Terahertz Waves Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Springer-Verlag PMC |
| spellingShingle | Ni, Qing Zhe Barnes, Alexander Daviso, Eugenio Herzfeld, Judith Griffin, Robert Guy Guss, William C Jawla, Sudheer K. Temkin, Richard J Continuously Tunable 250 GHz Gyrotron with a Double Disk Window for DNP-NMR Spectroscopy |
| title | Continuously Tunable 250 GHz Gyrotron with a Double Disk Window for DNP-NMR Spectroscopy |
| title_full | Continuously Tunable 250 GHz Gyrotron with a Double Disk Window for DNP-NMR Spectroscopy |
| title_fullStr | Continuously Tunable 250 GHz Gyrotron with a Double Disk Window for DNP-NMR Spectroscopy |
| title_full_unstemmed | Continuously Tunable 250 GHz Gyrotron with a Double Disk Window for DNP-NMR Spectroscopy |
| title_short | Continuously Tunable 250 GHz Gyrotron with a Double Disk Window for DNP-NMR Spectroscopy |
| title_sort | continuously tunable 250 ghz gyrotron with a double disk window for dnp nmr spectroscopy |
| url | http://hdl.handle.net/1721.1/94600 https://orcid.org/0000-0003-1589-832X https://orcid.org/0000-0001-9813-0177 |
| work_keys_str_mv | AT niqingzhe continuouslytunable250ghzgyrotronwithadoublediskwindowfordnpnmrspectroscopy AT barnesalexander continuouslytunable250ghzgyrotronwithadoublediskwindowfordnpnmrspectroscopy AT davisoeugenio continuouslytunable250ghzgyrotronwithadoublediskwindowfordnpnmrspectroscopy AT herzfeldjudith continuouslytunable250ghzgyrotronwithadoublediskwindowfordnpnmrspectroscopy AT griffinrobertguy continuouslytunable250ghzgyrotronwithadoublediskwindowfordnpnmrspectroscopy AT gusswilliamc continuouslytunable250ghzgyrotronwithadoublediskwindowfordnpnmrspectroscopy AT jawlasudheerk continuouslytunable250ghzgyrotronwithadoublediskwindowfordnpnmrspectroscopy AT temkinrichardj continuouslytunable250ghzgyrotronwithadoublediskwindowfordnpnmrspectroscopy |