ALMA CYCLE 11
The Joint ALMA Observatory (JAO) will start Cycle 11 observations in October 2024. A Call for Proposals with detailed information on Cycle 11 was issued on March 21 and the deadline
for proposal submission is April 25, 2024, at 15:00 UT.

GENERAL INFORMATIONALMA Cycle 11 will start in October 2024 and will span 12 months. The JAO anticipates having 4,300 hours for approved science observations on the 12-m Array and 4,300 hours on the Atacama
Compact Array (ACA), also known as the Morita Array. Antenna configurations C-1 to C-10 (with maximum baselines between 0.16 and 16.2 km) will be offered during this cycle. Observations thatare particularly encouraged include: ACA, especially in the Local Sidereal Time (LST) range of 20h to 10h; High frequency (Bands 8, 9, and 10) in any configuration; Low frequency (Bands 1, 3, and4) at long baselines (C-7, C-8, C-9, and C-10).

KEY DATES
25 April 2024

August 2024

Proposal submission deadline

Results communicated to PIs2024

202 521 March 2024

1 October 2024

30 September 2025

Release of the ALMA Cycle 11 Call for Proposals
and Observing Tool, and opening of the archive forproposal submission

Start of Cycle 11 observations,spanning 12 months

End of Cycle 11PROPOSAL TYPES• The proposal types in Cycle 11 will be the same as in Cycle 10. Principal Investigators submitting a proposal to ALMA for Very Long Baseline Interferometry (VLBI) observations in ALMA
bands 1 or 3 made in concert with the Global mm-VLBI Array (GMVA) at 7mm and 3 mm must also have submitted a proposal to the GMVA network by 31 January 2024.
• In the main 12-m Array, antenna configurations C-1 to C-10, with maximum baselines between 0.16 and 16.2 km, will be offered.
• Large Program proposals can be submitted for a subset of observing modes (see the Call for Proposals for more details).
• Joint Proposals can be submitted including requests at ESO/VLT, NRAO/VLA and JWST.

TECHNICAL CAPABILITIESThe anticipated Cycle 11 capabilities are:

The following technical capabilities will be available this Cycle for the first time:

Number of antennas• Full polarization in Band 1 on the 12-m Array. The polarization accuracy and capability willbe the same as in Bands 3–7.

• At least 43 antennas will be available from the 12-m Array.
• At least ten 7-m antennas (for short baselines) and three 12-m antennas (for single-dishmaps) will be available in the ACA.

Receiver bands• Receiver Bands 1, 3, 4, 5, 6, 7, 8, 9 and 10 (wavelengths of about 7, 3.1, 2.1, 1.6, 1.3, 0.87,0.74, 0.44 and 0.35 mm, respectively).

12-m Array Configurations• Maximum baselines for the antenna configurations will vary from 0.16 km to 16.2 km.

• Band 1 on the 7-m Array for Stokes I only (no Stokes Q/U/V).
• High-frequency and long-baseline observations with Band 9 in C-10 configuration, andBand 10 in configurations of C-9 and C-10.
• 4x4-bit spectral mode on the 7-m Array (dual polarization). The 4x4 mode is available forthe 7-m Array and allows spectral setups that are fully compatible with those of the 12-m
Array.
• Also, there are no longer time caps except for the 50 hour limit on Phased Array, the LPcaps, and DDT caps.

NEW IN CYCLE 11The following technical capabilities will be available this Cycle for the first time:Band 1 Polarization on 12-m

High-Frequencies on Long Baselines

Band 1 on 7-m

THE PROPOSAL REVIEW PROCESS• All proposals requesting fewer than 50 hours on the 12-m Array, and ACA stand-alone
proposals requesting fewer than 150 hours on the 7-m Array will be reviewed throughthe distributed peer review system.

• Large Programs will be reviewed by a panel of experts.
• All Cycle 11 proposals will be reviewed through a dual-anonymous procedure.