Letters of intent for the DESIR facility - March 18 - 20, 2026

^{Dear colleagues,}

^{After its construction in the last years, the DESIR building was handed over to GANIL end of October 2025. This was a big step for the DESIR project. We are now starting the preparation of equipment installation in the DESIR hall and envision the start of first experiments in 2027-8.}

<sup>In 2024 and 2025, we have prepared the physics case of DESIR with a number of workshops:
- General DESIR workshop: Feb. 27 - March 1, 2024
- LUMIERE: July 2, 2024
- BESTIOL: December 16, 2024
- DETRAP: May 6, 2025</sup>

^{The next step is now the call for Letters of Intent (LOIs) for the first experiments in DESIR until about 2032. This call includes experiments with SPIRAL1 and S3-LEB beams.
A workshop will take place at the guest house of GANIL starting on Wednesday March 18, 2026 at 09:00  and ending on Friday March 20, 2026 at 12:30. The aim is to collect ideas for first experiments at the start-up of DESIR. Only short abstracts are requested now (see below). Detailed LOIs will be requested at a later stage. Several abstracts can be submitted by the same author(s). The dead-line for abstract submission for the DESIR workshop is February 15, 2026. Following the submission of the LOI abstracts, we will work out a detailed programme for the workshop.}

^{The workshop will start with a presentation of the DESIR facility and the beams available at the beginning of the facility operation as well as the beam preparation in DESIR. Following this first session, the future users will present their ideas for experiments at DESIR. To prepare these LOIs, the "beam information" page of the present website contains information about available beams and possible short-term developments. The workshop will be completed with a visit of the DESIR hall on Friday morning.}

^{At the beginning of the week (March 16-18, 2026), an ISOL-France workshop will also take place at the GANIL guest house dedicated to DESIR, S3-LEB and ALTO as well as to ISOL-type experiments performed by the French community elsewhere. Therefore, the first session of the DESIR workshop (Wednesday morning) is organised in collaboration with the ISOL-France community.}

^{The indico website will be updated in the following weeks. No fees are requested to participate in the workshop. DESIR will pay for your lunches at the GANIL restaurant and for the workshop dinner on Wednesday evening.}

^{Please inform your colleagues about the workshop and send your abstracts via the form on this web site. Future communication will be addressed only to colleagues having signed up for the workshop.}

^{Looking forward to seeing you at GANIL}

^{Bertram Blank, Jean-Charles Thomas}