MAX IV opens Calls for proposals twice per year for the User Science Programme. The calls are named according to their beamtime period, not when the call itself opens.
Fast Access operates with a rolling call intended for projects that require quick access to beamtime, for a short time.
How beamtime calls & cycles are split:
Please note that at the end of 2026, MAX IV will update the cycles to align with the calendar year.
This means that the Fall26 Cycle will end on Dec 31st (Please see the Machine Operation Schedule for shutdown dates) instead of including January and February of 2027. This means that the cycle will be shorter than previous Fall cycles.
Cycle A:
Previously known as Spring
Call A: September
Call open: first Wednesday in September
Call close: third Wednesday in September, 14:00
Beamtime for cycle A: first half of year
1st January – 30th June
Cycle B:
Previously known as Fall
Call B: February
Call open: first Wednesday in February
Call close: third Wednesday in February, 14:00
Beamtime for cycle B: second half of year
N.B. Fall26: September – December
Future cycles: 1st July – 31st December
Fast Access:
Rolling call: All year
Find out more on:
Fast Access overview page.
2027a call for proposals
Our next call is for the cycle 2027a. The call will open on Wednesday 2nd September and will close on Wednesday 16th September at 14:00 CEST.
For guidance on writing a proposal, see our User Guide to Proposal submission.
Find out more about the beamlines available below – you can also find contact details for beamline scientists on their Staff pages.
| Standard Access | Long Term Proposal [LTP]* | BAG access |
|
|---|---|---|---|
| DUO opens for submission | 2026-09-02 | 2026-09-02 | Not open during Cycle A calls. |
| Submission deadline | 2026-09-16 14:00 / 2PM CEST | 2026-09-16 14:00 / 2PM CEST | |
| Beamtime period | Jan 2027 - Jun 2027 | Jan 2027 - Jun 2027 | |
| MAX IV aims to communicate final decisions to users during | Week 47 | Week 47 | |
| Balder | Standard | ||
| BioMAX & FragMAX | Standard | BAG | |
| Bloch | Standard | ||
| CoSAXS | Standard | BAG | |
| DanMAX | Standard | ||
| FemtoMAX | Standard | ||
| FinEstBeAMS | Standard | ||
| FlexPES & ICE Endstation | Standard | ||
| ForMAX | Standard | ||
| HIPPIE | Standard | ||
| MAXPEEM | Standard | ||
| MicroMAX | Standard | BAG | |
| NanoMAX | Standard | ||
| SoftiMAX | Standard | ||
| SPECIES | Standard | ||
| VERITAS | Standard |
*It is not yet finalised which beamlines will be able to accept LTP submissions in the next call. Please contact beamline staff directly to discuss your ideas.
Please note that while MAX IV tries to follow announced schedules, the need might arise to adjust the scope of upcoming calls due to unforeseeable circumstances.
Published call results
In order to increase transparency towards our funders and user community, MAX IV management has decided to publish the proposer name and affiliation, and starting from Spring24, the full title of the proposal, for all proposals accepted through the User Science Programme. Prior to Spring26 the Main Proposer’s surname and affiliation were listed. From Spring26 onwards, the Principal Investigator’s last name and affiliation are listed.