In its 112th Meeting held on 14-15 January 2014, the SP and SPS Committee emitted formal recommendations after the reception of our LoI. The full minutes of the meeting can be found here. The committee acknowledges the physics of IAXO and recommends the collaboration to proceed with the Technical Design Report. The paragraph addressing IAXO reads:
The Letter of Intent of the International Axion Observatory (IAXO) has been finished and submitted to the SPS Committee of CERN for consideration.
The document is public and can be found here.
The International Axion Observatory (IAXO) is a proposed fourth generation axion helioscope. It aims at a sensitivity much improved with respect to past and current axion searches, with real discovery potential.
The conceptual design of the experiment has been finished and a Letter of Intent submitted to CERN. Recently, the SPSC has recognised the physics case of IAXO and has recommended to proceed with a Technical Design Report.