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ISIS operating schedule
Our upcoming operating schedule. Cycles begin/end at 08:30 on the date specified.
| Cycle | Start | End | Target station(s) | Maintenance day(s) | Comments |
|---|---|---|---|---|---|
| 2026/2 | - | - | - | - | Cycle cancelled |
| 2026/3 | 15 Sep 2026 | 23 Oct 2026 | TS1 & TS2 | 30 Sep 2026 | - |
| 2026/4 | 17 Nov 2026 | 18 Dec 2026 | TS1 & TS2 | 02 Dec 2026 | - |
| 2026/5 | 02 Feb 2027 | 25 Mar 2027 | TS1 & TS2 | 17 Feb & 10 Mar 2027 | - |
ISIS operating schedule - future years
From April 2026 to March 2027, we expect to run four cycles which will be allocated in proposal rounds 26-1 (deadline October 2025) and 26-2 (deadline April 2026).
We plan to have an extended shutdown for accelerator and beamline work from March to early September 2027. This would mean no proposal round in autumn 2026, and a round opening in March 2027 to allocate time from September 2027 to March 2028.
Machine physics schedule
Accelerator physics experiments are performed before and after each user run. The latest schedule can be seen by clicking this text.
| Date | Shift | Mode | Rep Rate | Task | Contacts | Notes |
|
12/6/26 Friday |
00:30-08:30 | 5 | MS | User Cycle 2026/01 | Crew | |
| 08:30-10:30 | 4B | MS/32 | EPB Steering Magnet Study Operational Air Activation Measurement TS2 Gamma Spec |
REW SK HP |
Crew to switch mode from 5 to 4B | |
| 10:30-16:30 | 4B | MS/32 | Debuncher Characterisation | SA, BK | ||
| 16:30-00:30 | 4B | MS/32 | HEDS Model Commissioning | BK | ||
|
13/6/26 Saturday |
00:30-05:30 | 4B | MS/32 | EPB Element Dimming Tests | Crew, AB | |
| 05:30-08:30 | 4B | MS/32 | Crew Training | BJ | ||
| 08:30-12:30 | 4B | MS/32 | RF Phasing Tests (J-Parc) | AS, SM, EY | ||
| 12:30-16:30 | 4B | MS/32 | LLRF RFQ Control Tests | AS, DA | ||
| 16:30-00:30 | 4B | MS/32 | High Intensity Running | DJA | ||
|
14/6/26 Sunday |
00:30-08:30 | 4B | MS/32 | RCS Chopped Studies, SRM Chopped Studies | HR | HEDS Chopper Required, SRM |
| 08:30-12:30 | 4B | MS/32 | Impedance Measurements | DPdB, REW | SRM | |
| 12:30-16:30 | 4B | MS/32 | AC Dipole Tests | CJ, DPdB | BSRM | |
| 16:30-00:30 | 4B | MS/32 | Sextupole and Octupole Investigation | EA, CMW, HVC | SRM, MCPMS and HEDS Chopper Required | |
|
15/6/26 Monday |
00:30-08:30 | 4B | MS/32 | Half Integer Resonance Studies SRM Air Activation Measurement |
CMW, EA SK |
SRM, MCPMS and HEDS Chopper Required |
Previous cycles
| Cycle | Start | End | Target station(s) | Maintenance day(s) | Comments |
|---|---|---|---|---|---|
| 2026/1 | 05 May 2026 | 12 Jun 2026 | TS1 & TS2 | 20 May 2026 | |
| 2025/5 | 17 Feb 2026 | 30 Mar 2026 | TS1 & TS2 | 4 Mar 2026 | |
| 2025/4 | 18 Nov 2025 | 19 Dec 2025 | TS1 & TS2 | 03 Dec 2025 | |
| 2025/3 | 09 Sep 2025 | 17 Oct 2025 | TS1 & TS2 | 24 Sep 2025 | |
| Cycle cancelled | |||||
| 2025/1 | 29 Apr 2025 | 06 Jun 2025 | TS1 & TS2 | 14 May 2025 | |
| 2024/5 | 18 Feb 2025 | 28 Mar 2025 | TS1 & TS2 | 05 Mar 2024 | |
| 2024/4 | 19 Nov 2024 | 20 Dec 2024 | TS1 & TS2 | 04 Dec 2024 | |
| 2024/3 | 17 Sep 2024 | 20 Dec 2024 | TS1 & TS2 | 04 Dec 2024 | |
| 2024/2 | 09 Jul 2024 | 09 Aug 2024 | TS1 & TS2 | 05 Mar 2024 | |
| 2024/1 | 23 Apr 2024 | 31 May 2024 | TS1 & TS2 | 08 May 2024 | |
| 2023/5 | 13 Feb 2024 | 22 Mar 2024 | TS1 & TS2 | 28 Feb 2024 | |
| 2023/4 | 14 Nov 2023 | 19 Dec 2023 | TS1 & TS2 | 29 Nov 2023 | |
| 2023/3 | 19 Sep 2023 | 20 Oct 2023 | TS1 & TS2 | 04 Oct 2023 | |
| 2023/2 | 27 Jun 2023 | 04 Aug 2023 | TS1 & TS2 | 12 Jul 2023 | |
| 2023/1 | 25 Apr 2023 | 26 May 2023 | TS2 Only (TS1 Commissioning) | 10 May 2023 |
