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The TianLai Project -- A Radio Observation Experiment for Dark Energy

The Tianlai project is an experiment aimed at detecting dark energy by measuring the baryon acoustic oscillation (BAO) features in the large scale structure power spectrum, which can be used as a standard ruler. The basic plan is to build a radio telescope array, and use it to make 21cm intensity mapping observations of the neutral hydrogen which traces out the large scale structure of matter distribution.

Currently, the Tianlai collaboration includes scientists and engineers from China, Canada, France, and USA.

The word “Tianlai” literally means “heavenly sound”, it was coined by the ancient philosopher Zhuangzi (or Chuang Tzu, 369BCE-286BCE) .

Getting started

This wiki is only available for members of TianLai. If you need the member account, please email to our manager(Fengquan Wu):wufq@bao.ac.cn

• Configuration settings list
• MediaWiki FAQ
• MediaWiki release mailing list

Telecons and Hacksessions

• Fermilab Indico Site ('live broadcast' links to Zoom) for monthly collaboration telecons, monthly Tianlai Analysis Center (TAC) telecons, and (roughly) monthly TAC Hacksessions face-to-face, usually no telecon).
• LAL Indico Site with archived telecon notes through July 2017
• [1] Agendas and notes from Tianlai Analysis Center hacksessions, roughly once/month at Fermilab or Wisconsin. (This link is to a Microsoft Office document. Let Peter know if it doesn't work.

Data Logs

• Log:_Observation_Data_with_32chn_IA_Correlator
• Log:_Observation_Data_with_192chn_IA_Correlator
• Log:_Tianlai_Instruments_Maintenance
• Log:_Power_Operation_of_Devices_in_Antenna_Area

Data Commentary

• Fermilab Data Overview
• Data_201605-06 (1st data shipment)
• Data_201605-06 (only NP) (1st data shipment)
• 2018 Data
• Baseline list

Analysis and Software

• Tianlai Pipeline (Zuo Shifan's python code)

• Understanding The Python pypeline

• Document_Tlpipe

• Marriner Notes

• Software packages Installed in tianlai01.fnal.gov

• Albert's 'quicklook' waterfall plots of NCP data from May, 2016

• Fermilab Data Overview

• Tianlai Analysis Center

Dish Antennas and Beam Patterns

• Dish Feeds

• Dish Antenna Simulations

• Dish Antenna Beam Measurements from Astronomical Sources

• Drone Beam Measurements

Tianlai Dish Array

Cylinder Antennas and Beam Patterns

Presentations and Papers

• Talks about Tianlai

• Publications about Tianlai. Some editable files are in Papers.

• Posters - coming soon

• General Papers about 21 cm science

Proposals

• Observing Proposals

• Funding Proposals - coming soon

References

• Papers about Radio Telescope Calibration, Beams, etc.