The deadlines and operating periods as the facilities publish them on 3 November 2026, and the work that has to fit between them.
| Date | What |
|---|---|
| November 2026 – March 2027 | ILL reactor shut down (about five months). |
| 1–14 January 2027 | ESRF shutdown. |
| 15 January 2027 | ESRF long-term and HUB proposals (not for this round). |
| 15 February 2027 | ILL standard proposals: P1 (D2B), P3 (D20). |
| 1 March 2027, 17:00 CET | ESRF standard proposals: P2 (ID22), P4 (BM23), for beam from August 2027 to February 2028. |
| March 2027 | Spanish CRG calls: BM25 SpLine (ESRF), D1B and XtremeD (ILL). |
| 23 March – 24 May 2027 | ILL cycle 202 (the only 2027 cycle published so far). |
| About April 2027 | ILL subcommittees (about eight weeks after the deadline). |
| 2027, five runs | ESRF user mode, 5328 h; shutdowns 23 March – 8 April, 25 May – 3 June, 30 July – 19 August, 12–21 October, from 14 December. |
| September 2027 | Second rounds at both facilities (ESRF 10 September): P5, and resubmissions. |
| Task | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Agree the project and the proposer lists | ||||||||||||
| P0: fresh K12, ICP, TGA–MS, lab XRD | ||||||||||||
| Preliminary refinement of the 2023 lab patterns (diff-ref-struct) | ||||||||||||
| Write P1, P3 (ILL) | 15 | |||||||||||
| Write P2, P4 (ESRF); Spanish CRG versions | 1 | |||||||||||
| ILL beam, if granted (cycle 202 or later) | ||||||||||||
| ESRF beam, if granted | ||||||||||||
| P5 and resubmissions | 10 |
Dark: the work; light: possible windows. The ILL cycles after May 2027 are not yet published; ESRF beam for the 1 March round falls between August 2027 and February 2028.