Differences between revisions 106 and 148 (spanning 42 versions)
⇤ ← Revision 106 as of 2016-08-01 14:43:11 →
Size: 10607
Editor: CarstenKramer
Comment:
← Revision 148 as of 2017-02-03 10:37:57 → ⇥
Size: 18763
Editor: ritaccoa
Comment:
Deletions are marked like this. Additions are marked like this.
Line 4: Line 4:
Successful installation took place in early October 2015. NIKA2's field of view has a 6.5arcmin diameter, with angular resolutions of 12 and 18 arcsec at 1 and 2 mm wavelengths respectively. NIKA2 is designed as a facility instrument which will remain at its present position for at least a decade. The instrument will allow to measure linear polarizations at 1.15 mm.

For September 2016, some important changes to the hardware are currently being prepared: the 150 GHz array, the dichroic frequency
splitter, the lenses, and the cryostat window will be replaced and upgraded. In addition, several of the 20 readout electronics boards
will be replaced with the last version. Commissioning will then continue well into the winter semester and NIKA2 shall be opened to the community in 2017. 		Successful installation took place in early October 2015. NIKA2 is designed as a facility instrument which will remain at its present position for at least a decade. The instrument will allow to also measure linear polarizations at 1.15 mm.
Line 25: Line 22:
|| NIKA2 2 mm/150 GHz || 1020 || 2.00 mm || 125-170 GHz || 20 mJy*s^1/2^ || 12" || 6.5' ||
|| NIKA2 1 mm/260 GHz || 2x1140 || 1.15 mm || 240-280 GHz || 30 mJy*s^1/2^ || 18" || 6.5' ||
 || NIKA2 2 mm/150 GHz || 616 || 2.00 mm || 125-170 GHz || 15 mJy*s^1/2^ || 18" || 6.5' ||
|| NIKA2 1 mm/260 GHz || 2x1140 || 1.15 mm || 240-280 GHz || 30 mJy*s^1/2^ || 12" || 6.5' ||

Comments: A new 2mm array with 616 pixels was installed mid September 2016. The previously installed array had 1020 pixels. Further changes in September 2016 are a new dichroic frequency splitter, new lenses and a new cryostat window. In addition, several of the 20 readout electronics boards have been replaced with the last version. NIKA2 now has a homogeneous set of boards, plus several spare boards. Commissioning will start on October, 4th and will continue into the winter semester, when NIKA2 shall be opened to the community.
Line 32: Line 30:
A limited amount of time will be available in the upcoming winter semester 2016/17. See the call for proposals [[http://www.iram-institute.org/EN/content-page-169-7-57-169-0-0.html | here ]]. The above sensitivities shall be used, together with a conservative factor for overheads (slewing, pointing, focus, skydips, beam measurements, photometry) of 2.0. The sensitivity at 1mm is obtained after combining the measurements of the two 1mm arrays. No polarization measurement is provided for the time being.

 * [[http://www.iram.es/IRAMES/mainWiki/Continuum/TimeEstimatorScript | Guidelines to estimate observing times]].

----		 In the upcoming summer semester running from 1 June to 30 November 2017, a limited amount of time will be available for NIKA2 science projects. See the [[http://www.iram-institute.org/EN/content-page-169-7-57-169-0-0.html | call for proposals ]]. On the following page, we give information on how to estimate total observing times:

 * [[http://www.iram.es/IRAMES/mainWiki/Continuum/TimeEstimatorScript | Guidelines to estimate observing times for summer semester 2017]].

----

== Guaranteed Time Programs: Abstracts and source lists ==

Four Large Programs for NIKA2 in guaranteed time were submitted to the Program Committee for the deadline in September 2016. All four have been rated high by the PC and will be observed. Here, we provide the proposal abstracts together with the list of sources and map sizes. These shall be "fenced" against new continuum 2mm/1mm mapping projects at the 30m or NOEMA. <18-January 2017>

=== Abstracts ===

==== Galactic Star Formation with NIKA2 - GASTON (122-16) ====

Abstract: The IMF is a fundamental global output of the star formation process, and the question of its origin and universality has been a long-standing open issue. While the base of the IMF (0.1 to 1 Msun) may result from Jeans-like fragmentation of interstellar filaments, the problem of how the most extreme stellar objects (brown dwarfs, intermediate- and high-mass stars) build up their masses remains unsettled. The high-sensitivity and fast mapping capability of the NIKA2 camera offer the unique opportunity to detect large populations of low-brightness sources, and probe star-forming regions as never before. We propose to use this new instrument to: i. perform a complete survey of pre-brown-dwarf cores in two nearby star-forming regions, ii. map the intertwined populations of interstellar filaments and intermediate to high-mass cores within rich galactic plane star-forming regions; iii. use the dual band capability of NIKA2 at 1.2mm and 2mm to constrain the dust properties in a broad range of environments and reduce mass uncertainties by a factor of 3. Altogether, these observations will provide new insight on the earliest stages of star formation across both ends of the stellar IMF.

PI is Nicolas Peretto.

'''[[ http://www.iram.es/IRAMES/mainWiki/Continuum/NIKA2/Main | Go to the top ]]'''

==== Interpreting the Millimetre Emission of Galaxies with IRAM and NIKA (IMEGIN) (160-16) ====

Abstract: The mm part of the spectrum is one of the least explored parts of a galaxy’s spectral energy distribution (SED), yet it contains emission from three fundamentally important physical processes. These processes are thermal emission from dust, free-free emission from ionized gas and synchrotron emission from charged particles moving in the galactic magnetic field. We are proposing to use the NIKA2 camera to observe a sample of 22 nearby galaxies that also have considerable ancillary data across the SED from the radio to the ultra-violet. We will investigate the dust emissivity, the relationship between the three physical processes and their relation to star formation and the gas-to-dust ratio. As the sample galaxies are of large angular size we will be able to carry out this project in a spatially resolved way and hence investigate the different environments found within galaxies.

PI is Jonathan Davies

'''[[ http://www.iram.es/IRAMES/mainWiki/Continuum/NIKA2/Main | Go to the top ]]'''

==== The NIKA2 Cosmological Legacy Survey (N2CLS) (192-16) ====

Abstract: Using 300h of the NIKA2 Guaranteed Time, we will map the star formation at high redshift in two of the most popular fields. N2CLS will reach for the first time the confusion noise at the 30m, in 160 square arcminutes in GOODS-N. In COSMOS, N2CLS sensitivity will at least match or outperform the sensitivity of the S2CLS survey at 850 microns on 0.5 square degree. N2CLS will detect hundreds of dust-obscured optically-faint galaxies during their major episodes of formation in the early universe. It will fully open a new window on the faint and high-redshift dusty Universe and answer the outstanding issue of whether dusty star-formation contributes to early galaxy evolution. It will uniquely probe the transition at z~3-4 of the cosmic star-formation history between the predominantly unobscured growth in the early Universe and the obscured star formation, driven by the build-up of the most massive galaxies during the peak of cosmic assembly. The availability of this uniquely large sample of mm-selected galaxies with superb supporting multi-wavelength data will provide the opportunity to address the history of star formation, dust production and the growth of large-scale structures.

PIs: Guilaine Lagache, Alexandre Beelen, Nicolas Ponthieu

'''[[ http://www.iram.es/IRAMES/mainWiki/Continuum/NIKA2/Main | Go to the top ]]'''

==== High-resolution tSZ observations of a large sample of clusters of galaxies (NIKA2SZ) (199-16) ====

Abstract: The development of precision cosmology with clusters of galaxies requires high angular resolution observations to extend the understanding of galaxy clusters towards high redshift. The NIKA2 camera at the IRAM 30 m telescope is the only instrument currently in operation that is suited for this kind of observations, given its resolution, sensitivity and dual-band observation capability. We intend to observe a large sample of clusters of galaxies at high redshift (0.5 < z < 0.9), selected from the Planck and ACT catalogs. We have formed a representative cluster sample for redshift evolution and cosmological studies, with a homogeneous coverage in cluster mass as reconstructed from the integrated Compton parameter. We will use the SZ-dedicated pipeline that we have developed for the SZ observation with the NIKA camera. Our primary objective is to produce unprecedented high-quality deliverables (tSZ maps and pressure profiles) for all clusters of the sample. NIKA2 data will be complemented with ancillary data including X-ray, optical and radio observations. The full dataset will lead to significant improvements on the use of clusters of galaxies to draw cosmological constraints.

PIs: Frédéric Mayet, Barbara Comis

'''[[ http://www.iram.es/IRAMES/mainWiki/Continuum/NIKA2/Main | Go to the top ]]'''

=== Source list ===

 * [[attachment:NIKA2-GT-LPs-18jan2017.pdf|NIKA2-GT-LPs-18jan2017.pdf]]
 * [[attachment:NIKA2-GT-LPs-18jan2017.xls|NIKA2-GT-LPs-18jan2017.xls]]
Line 42: Line 84:
   * Bourrion et al. 2016, '''NIKEL_AMC: Readout electronics for the NIKA2 experiment''', [[https://arxiv.org/abs/1602.01288|arxiv]]
Line 53: Line 96:
   * Ritacco, A., Ponthieu, N, Catalano, A., et al, 2016, '''Polarimetry at millimeter wavelengths with the NIKA camera: calibration and performance''', A&A, [[https://arxiv.org/abs/1609.02042|astro-ph]]
   * Ruppin, F., Adam, R., Comis, B., et al. 2016, '''Non parametric deprojection of NIKA SZ observations: pressure distribution in the Planck-discovered cluster PSZ1 G045.85+57.71''', A&A, in press [[http://adsabs.harvard.edu/cgi-bin/bib_query?arXiv:1607.07679|ADS]]
   * Adam, R., Bartalucci, I., Pratt, G. W., et al. 2016, '''Mapping the kinetic Sunyaev-Zel'dovich effect toward MACS J0717.5+3745 with NIKA''', A&A, in press [[http://esoads.eso.org/abs/2016arXiv160607721A|ADS]]
Line 61: Line 106:
   * ''Alessia Ritacco (2013-2016) - Advisors: J.F. Macías-Pérez, Alessandro Monfardini, Andrea Catalano, Nicolas Ponthieu'' ([[attachment:PhD_thesis_Ritacco.pdf|Polarimetry at millimeter wavelengths with the instruments NIKA and NIKA2]])
 * Talks:
   * Alessia Ritacco, November 2016, '''Polarimetry at Millimeter wavelengths with NIKA and NIKA2''' [[attachment:ritacco-seminar-nika2-nov2016.pdf]]
Line 63: Line 112:
'''[[ http://www.iram.es/IRAMES/mainWiki/Continuum/NIKA2/Main | Go to the top ]]'''
Line 71: Line 122:
 * [[http://www.iram.es/IRAMES/mainWiki/Continuum/NIKA2/InstrumentalDoc | Instrument-related documentation page ]]
Line 131: Line 183:
 * '''6^th^ test run of NIKA2''': 25-October-2016 till 1-November-2016. Continue NIKA2 commissioning. [= Run 19 of a NIKA instrument]
  * [[Nika2Run6|Go to the 6th run Wiki page]]

 * '''7^th^ test run of NIKA2''': 6-December-2016 till 13-December-2016. Test DRO based external calibrator, continue NIKA2 commissioning. [= Run 20 of a NIKA instrument]
  * [[Nika2Run7|Go to the 7th run Wiki page]]

 * '''8^th^ test run of NIKA2''': 9-January-2017 to 13-January-2017, then 23-January to 27-January. Reverse array 1 lens to smooth version, short test on sky to see effect of the intervention. [= Run 21 of a NIKA instrument]
  * [[Nika2Run8|Go to the 8th run Wiki page]]

 * '''9^th^ test run of NIKA2''': 21-February-2017 to 28-February-2017. Resume NIKA2 commissioning after run 8 intervention. [= Run 22 of a NIKA instrument]
  * [[Nika2Run9|Go to the 9th run Wiki page]]
Line 138: Line 202:
  * '''Alain Benoit''' <alain.benoit@grenoble.cnrs.fr> (PI, IN)
 * '''Alessandro Monfardini''' <monfardini@neel.cnrs.fr> (co-PI, IN)		   * '''Alessandro Monfardini''' <monfardini@neel.cnrs.fr> (PI, IN)
  * Alain Benoit <alain.benoit@grenoble.cnrs.fr>
Line 161: Line 225:
Last update: 29-Jul-2016 Last update: 1-Oct-2016

NIKA2 Homepage

NIKA2, the second generation New-IRAM-KID-Array, is a dual band camera operating simultaneously at 150 and 260 GHz. The instrument is based on large arrays of superconducting Kinetic Inductance Detectors (KID) operated at temperatures of 100mK. NIKA2 is built by an international consortium, led by the Institute Neel (Grenoble France). Successful installation took place in early October 2015. NIKA2 is designed as a facility instrument which will remain at its present position for at least a decade. The instrument will allow to also measure linear polarizations at 1.15 mm.

Contents

  1. NIKA2 Homepage
    1. Overview
    2. Call for proposals and time estimator
    3. Guaranteed Time Programs: Abstracts and source lists
      1. Abstracts
      2. Source list
    4. Publications
    5. Technical Documentation
    6. Technical runs to commission NIKA2
    7. Support teams

NIKA2 in the web:

Overview

Some prelimiary characteristics of NIKA-2:

Band

Number of KIDs

Wavelength

Bandwidth

NEFD

HPBW

FoV

NIKA2 2 mm/150 GHz

616

2.00 mm

125-170 GHz

15 mJy*s1/2

18"

6.5'

NIKA2 1 mm/260 GHz

2x1140

1.15 mm

240-280 GHz

30 mJy*s1/2

12"

6.5'

Comments: A new 2mm array with 616 pixels was installed mid September 2016. The previously installed array had 1020 pixels. Further changes in September 2016 are a new dichroic frequency splitter, new lenses and a new cryostat window. In addition, several of the 20 readout electronics boards have been replaced with the last version. NIKA2 now has a homogeneous set of boards, plus several spare boards. Commissioning will start on October, 4th and will continue into the winter semester, when NIKA2 shall be opened to the community.

Call for proposals and time estimator

In the upcoming summer semester running from 1 June to 30 November 2017, a limited amount of time will be available for NIKA2 science projects. See the call for proposals. On the following page, we give information on how to estimate total observing times:

Guaranteed Time Programs: Abstracts and source lists

Four Large Programs for NIKA2 in guaranteed time were submitted to the Program Committee for the deadline in September 2016. All four have been rated high by the PC and will be observed. Here, we provide the proposal abstracts together with the list of sources and map sizes. These shall be "fenced" against new continuum 2mm/1mm mapping projects at the 30m or NOEMA. <18-January 2017>

Abstracts

Galactic Star Formation with NIKA2 - GASTON (122-16)

Abstract: The IMF is a fundamental global output of the star formation process, and the question of its origin and universality has been a long-standing open issue. While the base of the IMF (0.1 to 1 Msun) may result from Jeans-like fragmentation of interstellar filaments, the problem of how the most extreme stellar objects (brown dwarfs, intermediate- and high-mass stars) build up their masses remains unsettled. The high-sensitivity and fast mapping capability of the NIKA2 camera offer the unique opportunity to detect large populations of low-brightness sources, and probe star-forming regions as never before. We propose to use this new instrument to: i. perform a complete survey of pre-brown-dwarf cores in two nearby star-forming regions, ii. map the intertwined populations of interstellar filaments and intermediate to high-mass cores within rich galactic plane star-forming regions; iii. use the dual band capability of NIKA2 at 1.2mm and 2mm to constrain the dust properties in a broad range of environments and reduce mass uncertainties by a factor of 3. Altogether, these observations will provide new insight on the earliest stages of star formation across both ends of the stellar IMF.

PI is Nicolas Peretto.

Go to the top

Interpreting the Millimetre Emission of Galaxies with IRAM and NIKA (IMEGIN) (160-16)

Abstract: The mm part of the spectrum is one of the least explored parts of a galaxy’s spectral energy distribution (SED), yet it contains emission from three fundamentally important physical processes. These processes are thermal emission from dust, free-free emission from ionized gas and synchrotron emission from charged particles moving in the galactic magnetic field. We are proposing to use the NIKA2 camera to observe a sample of 22 nearby galaxies that also have considerable ancillary data across the SED from the radio to the ultra-violet. We will investigate the dust emissivity, the relationship between the three physical processes and their relation to star formation and the gas-to-dust ratio. As the sample galaxies are of large angular size we will be able to carry out this project in a spatially resolved way and hence investigate the different environments found within galaxies.

PI is Jonathan Davies

Go to the top

The NIKA2 Cosmological Legacy Survey (N2CLS) (192-16)

Abstract: Using 300h of the NIKA2 Guaranteed Time, we will map the star formation at high redshift in two of the most popular fields. N2CLS will reach for the first time the confusion noise at the 30m, in 160 square arcminutes in GOODS-N. In COSMOS, N2CLS sensitivity will at least match or outperform the sensitivity of the S2CLS survey at 850 microns on 0.5 square degree. N2CLS will detect hundreds of dust-obscured optically-faint galaxies during their major episodes of formation in the early universe. It will fully open a new window on the faint and high-redshift dusty Universe and answer the outstanding issue of whether dusty star-formation contributes to early galaxy evolution. It will uniquely probe the transition at z~3-4 of the cosmic star-formation history between the predominantly unobscured growth in the early Universe and the obscured star formation, driven by the build-up of the most massive galaxies during the peak of cosmic assembly. The availability of this uniquely large sample of mm-selected galaxies with superb supporting multi-wavelength data will provide the opportunity to address the history of star formation, dust production and the growth of large-scale structures.

PIs: Guilaine Lagache, Alexandre Beelen, Nicolas Ponthieu

Go to the top

High-resolution tSZ observations of a large sample of clusters of galaxies (NIKA2SZ) (199-16)

Abstract: The development of precision cosmology with clusters of galaxies requires high angular resolution observations to extend the understanding of galaxy clusters towards high redshift. The NIKA2 camera at the IRAM 30 m telescope is the only instrument currently in operation that is suited for this kind of observations, given its resolution, sensitivity and dual-band observation capability. We intend to observe a large sample of clusters of galaxies at high redshift (0.5 < z < 0.9), selected from the Planck and ACT catalogs. We have formed a representative cluster sample for redshift evolution and cosmological studies, with a homogeneous coverage in cluster mass as reconstructed from the integrated Compton parameter. We will use the SZ-dedicated pipeline that we have developed for the SZ observation with the NIKA camera. Our primary objective is to produce unprecedented high-quality deliverables (tSZ maps and pressure profiles) for all clusters of the sample. NIKA2 data will be complemented with ancillary data including X-ray, optical and radio observations. The full dataset will lead to significant improvements on the use of clusters of galaxies to draw cosmological constraints.

PIs: Frédéric Mayet, Barbara Comis

Go to the top

Source list

Publications

  • Instrument/detectors papers:

    • Bourrion et al. 2016, NIKEL_AMC: Readout electronics for the NIKA2 experiment, arxiv

    • Catalano et al. 2016, The NIKA2 commissioning campaign: performance and first results, arxiv

    • Calvo et al. 2016, The NIKA2 instrument, a dual-band kilopixel KID array for millimetric astronomy, arxiv

    • Goupy et al. 2016, Microfabrication technology for large LEKID arrays : from NIKA2 to future applications, arxiv

    • Monfardini et al. 2014, Latest NIKA Results and the NIKA-2 Project, JLTP 176, 787, arxiv

    • Catalano et al. 2014, Performance and calibration of the NIKA camera at the IRAM 30 m telescope, A&A 569, A9, arxiv

    • Calvo et al. 2013, Improved mm-wave photometry for kinetic inductance detectors, A&A, 551, L12 ADS

    • Bourrion et al. 2012, NIKEL: Electronics and data acquisition for kilopixels kinetic inductance camera, Journal of Instrumentation, 7, 07, pp. 7014. arXiv

    • Monfardini et al. 2011, A Dual-band Millimeter-wave Kinetic Inductance Camera for the IRAM 30 m Telescope, ApJS, 194, 2, article id. 24. arXiv

    • Internal list of technical papers

  • Astronomical papers:

    • Ritacco, A., Ponthieu, N, Catalano, A., et al, 2016, Polarimetry at millimeter wavelengths with the NIKA camera: calibration and performance, A&A, astro-ph

    • Ruppin, F., Adam, R., Comis, B., et al. 2016, Non parametric deprojection of NIKA SZ observations: pressure distribution in the Planck-discovered cluster PSZ1 G045.85+57.71, A&A, in press ADS

    • Adam, R., Bartalucci, I., Pratt, G. W., et al. 2016, Mapping the kinetic Sunyaev-Zel'dovich effect toward MACS J0717.5+3745 with NIKA, A&A, in press ADS

    • Adam, R., Comis, B., Bartalucci, I., et al. 2016, High angular resolution Sunyaev-Zel'dovich observations of MACS J1423.8+2404 with NIKA: Multiwavelength analysis, A&A, 586, 122 ADS

    • Adam, R., Comis, B., Macias-Perez, J.-F., et al, 2015, Pressure distribution of the high-redshift cluster of galaxies CL J1226.9+3332 with NIKA, A&A, 576, A12 ADS

    • Adam, R., Comis, B., Macias-Perez, J.-F, et al, 2014, First observation of the thermal Sunyaev-Zel'dovich effect with kinetic inductance detectors, A&A, 569, 66 ADS

  • Ph.D. thesis:
  • Talks:

  • NIKA2 publications list maintained at IPAG

Go to the top

Technical Documentation

Go to the top

Technical runs to commission NIKA2

  • 1st test run of NIKA2: 29-October-2015 till 10-November-2015. Installation, cool down at the 30m, testing/debugging/developing. [= Run 13 of a NIKA instrument]

  • 2nd test run of NIKA2: 24-November-2015 till 02-December-2015. Continue tests started during run 1, in particular Beam maps and NEFD with the 13 NIKEL boards assembled the last days of run 1. [= Run 14 of a NIKA instrument]

  • 3rd test run of NIKA2: 12-January-2016 till 01-February-2016. Implementation of new NIKEL boards; the 20 data lines of NIKA2 are foreseen to be plugged simultaneously. With the 3 arrays fully read, continue and redo tests started with runs 1 & 2, in particular Beam maps and NEFD. [= Run 15 of a NIKA instrument]

  • 4th test run of NIKA2: 1-March-2016 till 15-March-2016. Continue tests started with previous runs, in particular investigate deeper beam patterns (XY focus, beam maps), synchronization, array 1 & 3 performances vs electronic boards, NEFD, mapping strategies. [= Run 16 of a NIKA instrument]

  • Dark run: 4-May-2016. Test sensitivity of NIKA2 to external electromagnetic perturbations, with the entrance window of the cryostat closed. [= Run 17 of a NIKA instrument]

  • 5th test run of NIKA2: 16-September-2016 till 11-October-2016. Upgrade NIKA2 with new dichroic, new corrugated lenses and window, new 2mm array, new NIKEL boards (get the 20 lines with homogeneous electronics, v3); redo better the tests started with previous runs (mostly beam maps in best weather conditions, but also various types of scan to investigate deeper beams and noise, synchronization, NEFD, skydips, mapping strategies, possibly polarization. [= Run 18 of a NIKA instrument]

  • 6th test run of NIKA2: 25-October-2016 till 1-November-2016. Continue NIKA2 commissioning. [= Run 19 of a NIKA instrument]

  • 7th test run of NIKA2: 6-December-2016 till 13-December-2016. Test DRO based external calibrator, continue NIKA2 commissioning. [= Run 20 of a NIKA instrument]

  • 8th test run of NIKA2: 9-January-2017 to 13-January-2017, then 23-January to 27-January. Reverse array 1 lens to smooth version, short test on sky to see effect of the intervention. [= Run 21 of a NIKA instrument]

  • 9th test run of NIKA2: 21-February-2017 to 28-February-2017. Resume NIKA2 commissioning after run 8 intervention. [= Run 22 of a NIKA instrument]

Support teams

Go to top

Author: Israel Hermelo. Created: 5-Aug-2015. This page is maintained by PG, CK, SL and the NIKA team. Last update: 1-Oct-2016

Continuum/NIKA2/Main (last edited 2024-10-23 12:27:04 by CarstenKramer)