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1. Identificação
Tipo de ReferênciaArtigo em Evento (Conference Proceedings)
Sitemtc-m21c.sid.inpe.br
Código do Detentorisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identificador8JMKD3MGP3W34R/43L8URS
Repositóriosid.inpe.br/mtc-m21c/2020/11.23.10.52
Repositório de Metadadossid.inpe.br/mtc-m21c/2020/11.23.10.52.57
Última Atualização dos Metadados2022:01.04.01.35.38 (UTC) administrator
Chave SecundáriaINPE--PRE/
Chave de CitaçãoOliveiraAgSoMeBaMi:2020:EvQfNi
TítuloEvaluation of the Q-factor of niobium superconducting reentrant cavities treated by nitrogen plasma based ion implantation
Ano2020
Data de Acesso21 maio 2024
Tipo SecundárioPRE CN
2. Contextualização
Autor1 Oliveira, Rogério de Moraes
2 Aguiar, Odylio Denys de
3 Souza, Renata Lopes Gonçalves de
4 Mello, Carina Barros
5 Baldan, Maurício Ribeiro
6 Miranda, Edson Luiz de
Identificador de Curriculo1 8JMKD3MGP5W/3C9JJ6L
2 8JMKD3MGP5W/3C9JJ2A
3
4
5 8JMKD3MGP5W/3C9JHTA
Grupo1 LABAP-COCTE-INPE-MCTIC-GOV-BR
2 DIDAS-CGCEA-INPE-MCTIC-GOV-BR
3
4 LABAP-COCTE-INPE-MCTIC-GOV-BR
5 LABAS-COCTE-INPE-MCTIC-GOV-BR
Afiliação1 Instituto Nacional de Pesquisas Espaciais (INPE)
2 Instituto Nacional de Pesquisas Espaciais (INPE)
3
4 Instituto Nacional de Pesquisas Espaciais (INPE)
5 Instituto Nacional de Pesquisas Espaciais (INPE)
Endereço de e-Mail do Autor1 rogerio.oliveira@inpe.br
2 odylio.aguiar@inpe.br
3
4 carina.mello@inpe.br
5 mauricio.baldan@inpe.br
Nome do EventoEncontro de Outono Sociedade Brasileira de Física
Localização do EventoOnline
Data23 a 26 nov.
Histórico (UTC)2020-11-23 10:52:57 :: simone -> administrator ::
2020-11-24 20:31:56 :: administrator -> simone :: 2020
2020-12-14 11:50:36 :: simone -> administrator :: 2020
2022-01-04 01:35:38 :: administrator -> simone :: 2020
3. Conteúdo e estrutura
É a matriz ou uma cópia?é a matriz
Estágio do Conteúdoconcluido
Transferível1
Tipo do ConteúdoExternal Contribution
ResumoSurface treatment is a mandatory stage to enhnace the performance (Q-factor) of the niobium superconducting cavities, which play the role of parametric transducers at the Mario Schenberg gravitational wave detector, located in the astrophsical department at INPE. In this work the respective cavities were treated by electropolishing (EP) and Plasma Based Ion Implantation (PBII), leading to an increase of the Q-factors by up two orders of magnitude. While EP is responsible for chemically removing the outer layer of the machined cavities, N-PBII is employed to implant nitrogen ions into Nb. In addition, Ar-PBII performed afterwards at high temperature (substrate heated) is a fundamental step used to remove contaminants (C and O) from the surface of Nb. A systematic investigation has been performed by strictly adjusting the parameters of the processes in order to reduce at maximum the amount of contaminants on the surfaces and to control the nitrogendoping, an important impurity to avoiod the formation of niobium hydrides, compounds with very low critical temperatures, as previously reported by experiments performed in Fermilab with Nb superconducting cavities1 . A set of characterization methods involving MEV/EDS, XRD and XPS were used to monitoring the morphology/elemental analysis, phase phormation and the chemical state of the elements, respectively. A correlation of the Q-factors (measured at 4k) with the chemical composition of the elements present on the surface of Nb is demonstrated, indicating a clear path to attain high performance of the cavities, helping with the enhancement of the sensitivity of the Mario Schenber detector.
ÁreaFISPLASMA
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5. Fontes relacionadas
Unidades Imediatamente Superiores8JMKD3MGPCW/3ESR3H2
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8JMKD3MGPCW/3ETR8EH
Acervo Hospedeirourlib.net/www/2017/11.22.19.04
6. Notas
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