| 1. Identity statement | ||||
| Reference Type | Journal Article | |||
| Site | mtc-m21d.sid.inpe.br | |||
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Identifier | 8JMKD3MGP3W34T/47ERMJ5 | |||
| Repository | sid.inpe.br/mtc-m21d/2022/08.16.15.50 | |||
| Last Update | 2022:08.16.15.50.11 (UTC) simone | |||
| Metadata Repository | sid.inpe.br/mtc-m21d/2022/08.16.15.50.11 | |||
| Metadata Last Update | 2023:01.03.16.46.12 (UTC) administrator | |||
| DOI | 10.1051/0004-6361/202141382 | |||
| ISSN | 0004-6361 1432-0746 | |||
| Citation Key | AbdallaMMARWDFLMMOSSVBBBQVWCFLNPSSZ:2022:IIOpDe | |||
| Title | The BINGO Project: III. Optical design and optimization of the focal plane  | |||
| Year | 2022 | |||
| Month | Aug. | |||
| Access Date | 2024, May 14 | |||
| Type of Work | journal article | |||
| Secondary Type | PRE PI | |||
| Number of Files | 1 | |||
| Size | 17561 KiB | |||
| 2. Context | ||||
| Author | 1 Abdalla, Filipe B. 2 Marins, Alessandro 3 Motta, Pablo 4 Abdalla, Elcio 5 Ribeiro, Rafael M. 6 Wuensche, Carlos Alexandre 7 Delabrouille, Jacques 8 Fornazier, Karin S. F. 9 Liccardo, Vincenzo 10 Maffei, Bruno 11 Mericia, Eduardo Jubini de 12 Otobone, Carlos H. N. 13 Santos, Juliana F. R. dos 14 Silva, Gustavo B. 15 Vieira, Jordany 16 Barretos, João A. M. 17 Barosi, Luciano 18 Brito, Francisco A. 19 Queiroz, Amilcar R. 20 Villela Neto, Thyrso 21 Wang, Bin 22 Costa, Andre A. 23 Ferreira, Elisa G. M. 24 Landim, Ricardo G. 25 Novaes, Camila Paiva 26 Peel, Michael W. 27 Santos, Larissa 28 Santos, Marcelo V. dos 29 Zhang, Jiajun | |||
| Resume Identifier | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 8JMKD3MGP5W/3C9JJA6 | |||
| Group | 1 2 3 4 5 6 DIAST-CGCE-INPE-MCTI-GOV-BR 7 8 9 DIAST-CGCE-INPE-MCTI-GOV-BR 10 11 AST-CEA-DIPGR-INPE-MCTI-GOV-BR 12 13 14 15 16 17 18 19 20 DIAST-CGCE-INPE-MCTI-GOV-BR 21 22 23 24 25 DIAST-CGCE-INPE-MCTI-GOV-BR | |||
| Affiliation | 1 University College London 2 Universidade de São Paulo (USP) 3 Universidade de São Paulo (USP) 4 Universidade de São Paulo (USP) 5 Universidade de São Paulo (USP) 6 Instituto Nacional de Pesquisas Espaciais (INPE) 7 Université Paris Diderot 8 Universidade de São Paulo (USP) 9 Instituto Nacional de Pesquisas Espaciais (INPE) 10 Institut d'Astrophysique Spatiale 11 Instituto Nacional de Pesquisas Espaciais (INPE) 12 Universidade de São Paulo (USP) 13 Universidade de São Paulo (USP) 14 Universidade de São Paulo (USP) 15 Universidade de São Paulo (USP) 16 Universidade de São Paulo (USP) 17 Universidade Federal de Campina Grande (UFCG) 18 Universidade Federal de Campina Grande (UFCG) 19 Universidade Federal de Campina Grande (UFCG) 20 Instituto Nacional de Pesquisas Espaciais (INPE) 21 Yangzhou University 22 Yangzhou University 23 Universidade de São Paulo (USP) 24 Technische Universität München 25 Instituto Nacional de Pesquisas Espaciais (INPE) 26 Instituto de Astrofísica de Canarias 27 Yangzhou University 28 Universidade Federal de Campina Grande (UFCG) 29 Institute for Basic Science (IBS) | |||
| Author e-Mail Address | 1 2 3 4 5 6 cawuensche@gmail.com 7 8 9 vic2000@hotmail.it 10 11 ejubini@gmail.com 12 13 14 15 16 17 18 19 20 21 22 23 24 25 camilapnovaes@gmail.com | |||
| Journal | Astronomy and Astrophysics | |||
| Volume | 664 | |||
| Pages | A16 | |||
| Secondary Mark | A1_GEOCIÊNCIAS A1_ENGENHARIAS_III A2_MATEMÁTICA_/_PROBABILIDADE_E_ESTATÍSTICA A2_INTERDISCIPLINAR A2_ENGENHARIAS_IV A2_ASTRONOMIA_/_FÍSICA B2_ENSINO C_ENGENHARIAS_II | |||
| History (UTC) | 2022-08-16 15:50:11 :: simone -> administrator :: 2022-08-16 15:50:11 :: administrator -> simone :: 2022 2022-08-16 15:53:41 :: simone -> administrator :: 2022 2023-01-03 16:46:12 :: administrator -> simone :: 2022 | |||
| 3. Content and structure | ||||
| Is the master or a copy? | is the master | |||
| Content Stage | completed | |||
| Transferable | 1 | |||
| Content Type | External Contribution | |||
| Version Type | publisher | |||
| Keywords | Cosmology: observations Instrumentation: miscellaneous Radio lines: general Telescopes | |||
| Abstract | Context. The Baryon Acoustic Oscillations from Integrated Neutral Gas Observations (BINGO) telescope was designed to measure the fluctuations of the 21 cm radiation arising from the hyperfine transition of neutral hydrogen. It is also aimed at measuring the baryon acoustic oscillations (BAO) from such fluctuations, thereby serving as a pathfinder to future, deeper intensity mapping surveys. The requirements for the Phase 1 of the projects consider a large reflector system (two 40 m-class dishes in a crossed-Dragone configuration) illuminating a focal plane with 28 horns to measure the sky, with two circular polarizations in a drift scan mode to produce measurements of the radiation in intensity (I) as well as the circular (V) polarization. Aims. In this paper, we present the optical design for the instrument. We describe the optical arrangement of the horns in the focal plane to produce a homogeneous and well-sampled map after the end of Phase 1, as well as the intensity and polarization properties of the beams. Our analysis provides an optimal model for the location of the horns in the focal plane, producing a homogeneous and Nyquist-sampled map after the nominal survey time. Methods. We used the GRASP package to model the focal plane arrangement and performed several optimization tasks to arrive at the current configuration, including an estimation of the sidelobes corresponding to the diffraction patterns of the two mirrors. The final model for the focal plane was defined through a combination of neural network and other direct optimization methods. Results. We arrived at an optimal configuration for the optical system that includes the focal plane positioning and the beam behavior of the instrument. We present an estimate of the expected sidelobes both for intensity and polarization, as well as the effect of band averaging on the final sidelobes, as well as an estimation of the cross-polarization leakage for the final configuration. Conclusions. We conclude that the chosen optical design meets the requirements for the project in terms of polarization purity and area coverage as well as a homogeneity of coverage so that BINGO can perform a successful BAO experiment. We further conclude that the requirements on the placement and rms error on the mirrors are also achievable so that a successful experiment can be conducted. | |||
| Area | CEA | |||
| Arrangement 1 | urlib.net > BDMCI > Fonds > Produção pgr ATUAIS > AST > The BINGO Project:... | |||
| Arrangement 2 | urlib.net > BDMCI > Fonds > Produção a partir de 2021 > CGCE > The BINGO Project:... | |||
| doc Directory Content | access | |||
| source Directory Content | there are no files | |||
| agreement Directory Content |
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| 4. Conditions of access and use | ||||
| data URL | http://mtc-m21d.sid.inpe.br/ibi/8JMKD3MGP3W34T/47ERMJ5 | |||
| zipped data URL | http://mtc-m21d.sid.inpe.br/zip/8JMKD3MGP3W34T/47ERMJ5 | |||
| Language | en | |||
| Target File | aa41382-21.pdf | |||
| User Group | simone | |||
| Reader Group | administrator simone | |||
| Visibility | shown | |||
| Archiving Policy | allowpublisher allowfinaldraft | |||
| Update Permission | not transferred | |||
| 5. Allied materials | ||||
| Next Higher Units | 8JMKD3MGPCW/3F2NE4L 8JMKD3MGPCW/46KTFK8 | |||
| Citing Item List | sid.inpe.br/mtc-m21/2012/07.13.15.00.58 1 sid.inpe.br/bibdigital/2013/10.12.16.06 1 | |||
| Dissemination | WEBSCI; PORTALCAPES; COMPENDEX; SCOPUS. | |||
| Host Collection | urlib.net/www/2021/06.04.03.40 | |||
| 6. Notes | ||||
| Empty Fields | alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn label lineage mark mirrorrepository nextedition notes number orcid parameterlist parentrepositories previousedition previouslowerunit progress project readpermission rightsholder schedulinginformation secondarydate secondarykey session shorttitle sponsor subject tertiarymark tertiarytype url | |||
| 7. Description control | ||||
| e-Mail (login) | simone | |||
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