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

18 Mar 2026, 09:00 → 20 Mar 2026, 12:30 Europe/Paris

GANIL Guest House

^{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.}

^{You can follow the wokshop online on Zoom :}

^{https://u-bordeaux-fr.zoom.us/j/81797651815?pwd=ealRAVX9gbzCcBmDZlTC9CfB9hSh61.1}

^{Looking forward to seeing you at GANIL}

^{Bertram Blank, Jean-Charles Thomas}

 

Template_LOI_DESIR_Abstract.docx

Wednesday 18 March

09:30 → 10:00 Welcome (coffee)

10:00 → 10:05 DESIR / Direction GANIL: (DESIR / Direction GANIL)

10:05 → 10:30 DESIR / Direction GANIL: Introduction (B. Blank)

10:05 Introduction: B.Blank

2026_03_18_B.Blank_DESIR_LOI_WS_intro.pdf

2026_03_20_B.Blank_DESIR_LOI_WS_Summary.pdf

10:30 → 11:00 Infrastructure and beams (Chair: B. Blank): DESIR (25’+5’)

Convener: Jean-Charles THOMAS (Grand Accélérateur National d'Ions Lourds)

10:30 Infrastructure and beams - DESIR: J.-C.Thomas

2026_03_18_J.-C.Thomas_DESIR project.pdf

11:00 → 11:30 Infrastructure and beams (Chair: B. Blank): SPIRAL1 RIB production (25’+5’)

Convener: Pierre CHAUVEAU (GANIL)

11:00 Infrastructure and beams - SPIRAL1: P. Chauveau

2026_03_18_P.Chauveau_SPIRAL1.pdf

11:30 → 12:00 Infrastructure and beams (Chair: B. Blank): S3-LEB RIB production (25’+5’)

Convener: Vladimir MANEA (IJCLab-IN2P3-CNRS)

11:30 Infrastructure and beams - S3-LEB: V. Manea

2026_03_18_VladimirManea_S3-LEB.pdf

12:00 → 13:30 Lunch break

13:30 → 13:55 Nuclear Astrophysics (Chair: F. de Oliveira): Nuclear astrophysics studies with (NA)2STARS - LoI 3, 37, 39, 40 (25+5’)

Convener: Muriel FALLOT (Subatech)

14:00 → 14:15 Nuclear Astrophysics (Chair: F. de Oliveira): Nuclear astrophysics studies with DSD - LoI 31, 33 (15+5’)

Convener: Iolanda MATEA MACOVEI (IJCLab)

14:20 → 14:35 Applications and development 1/2 (Chair: P. Ascher): HINA commissioning - LoI 22 (10+5')

Convener: Sarah NAIMI (IJCLab)

14:35 → 14:50 Applications and development 1/2 (Chair: P. Ascher): Highly Charged Ions Collinear Laser Spectroscopy - LoI 27 (10+5’)

Convener: Michele SGUAZZIN (IJCLab - CNRS)

14:50 → 15:05 Applications and development 1/2 (Chair: P. Ascher): ARGOS - LoI 35 (10+5’)

Convener: Georgi GEORGIEV (CSNSM, Orsay, France)

15:05 → 15:35 Coffee break

15:35 → 16:00 Nuclear structure 1/2 (Chair: A. Algora): COeCO + DSD - LoI 16, 17, 18, 19 (20+5’)

Convener: Guillem TOCABENS (IJCLab)

16:00 → 16:15 Nuclear structure 1/2 (Chair: A. Algora): Probing octupole deformation limits in n-deficient actinides at DESIR - LoI 29 (10+5’)

Convener: Emmanuel REY-HERME (CEA/Irfu/DPhN)

16:15 → 16:30 Nuclear structure 1/2 (Chair: A. Algora): Moments of excited states with DESIR - LoI 30 (10+5’)

Convener: Radomira LOZEVA (IJCLab, CNRS)

16:30 → 16:45 Nuclear structure 1/2 (Chair: A. Algora): Electron capture on H-,He and Li-like 37Ar, 64Cu and 68Ga - LoI 26 (10+5’)

Convener: Michele SGUAZZIN (IJCLab - CNRS)

16:45 → 17:00 Nuclear structure 1/2 (Chair: A. Algora): Beta-decay studies of neutron-deficient transitional Pt and Ir isotopes - LoI 51 (10+5’)

Convener: Soumen NANDI (UGC-DAE CSR, Kolkata Centre, LB-8, LB Block, Sector III, Bidhannagar Kolkata 700098, India.)

17:00 → 17:15 Nuclear structure 1/2 (Chair: A. Algora): Beta decay of neutron-deficient Cd and In isotopes - LoI 49 (10+5’)

Convener: Gopal MUKHERJEE (Variable Energy Cyclotron Centre, Kolkata)

17:15 → 17:35 Infrastructure and beams - DESIR

Speaker: Jean-Charles THOMAS (Grand Accélérateur National d'Ions Lourds)

2026_03_18_J.-C.Thomas_DESIR project.pdf

Thursday 19 March

09:00 → 09:10 Welcome address – Funding agencies

09:10 → 09:25 Applications and development 2/2 (Chair: B. Blank): PET isotopes 62Cu, 86Y and 132La with (NA)2STARS - LoI 21 (10'+5’)

Convener: Bernadette REBEIRO (GANIL)

09:25 → 09:45 Applications and development 2/2 (Chair: B. Blank): Laser cooling of radioactive barium isotopes - LoI 8,9 (15’+5’)

Convener: Simon LECHNER

09:45 → 10:15 Applications and development 2/2 (Chair: B. Blank): DESIR needs fission products – LoI 44 (25’+5’)

Convener: Fadi IBRAHIM (IJCLab)

10:15 → 10:40 Coffee break

10:40 → 10:55 Exotic decays (Chair: J. Piot): Beta-delayed (multi-)proton emission - LoI 38 (10’+5’)

Convener: Jérôme GIOVINAZZO (LP2IB (CENBG) CNRS / Univ. Bordeaux)

10:55 → 11:10 Exotic decays (Chair: J. Piot): Search for cluster radioactivity from barium isotopes - LoI 41 (10’+5’)

Convener: Bertram BLANK (LP2i Bordeaux)

11:10 → 11:30 Exotic decays (Chair: J. Piot): Beyond-neutron-threshold structure investigations in the N=20 & 28 regions - LoI 32, 43 (15’+5’)

Convener: David VERNEY (IJCLab)

11:30 → 13:30 Lunch break

13:30 → 13:55 Mass measurements (Chair: M. Fallot): Mass measurement close to 100Sn, with N~28 and oxygen nuclei - LoI 1, 2 (20'+5’)

Convener: Pauline ASCHER (LP2iB)

13:55 → 14:10 Mass measurements (Chair: M. Fallot): Mass evolution at the extreme neutron deficient-side of the N=82 shell - LoI 36 (10’+5’)

Convener: Antoine DE ROUBIN (LPC Caen)

14:10 → 14:30 Mass measurements (Chair: M. Fallot): (Super-) heavy nuclei - LoI 5, 6 (15’+5’)

Convener: Enrique MINAYA RAMIREZ (IJCLab)

14:30 → 14:45 Mass measurements (Chair: M. Fallot): High-Precision Mass Measurements near the N = 50 shell closure - LoI 45 (10’+5’)

Convener: Laetitia CANETE

14:45 → 15:00 Mass measurements (Chair: M. Fallot): Penning-trap measurement of the mass of 32Ar - LoI 23 (10’+5’)

Convener: Mathias GERBAUX (CENBG - Université de Bordeaux)

15:00 → 15:30 Coffee break

15:30 → 16:00 Laser spectroscopy (Chair: D. Yordanov): 8B, 71Kr/71Br, Cl, F, O , P isotopic chains - LoI 10, 11, 12, 13, 14,15 (25’+5’)

Convener: Louis-Alexandre LALANNE (IPHC)

16:00 → 16:15 Laser spectroscopy (Chair: D. Yordanov): Collinear LRC - LoI 4 (10’+5’)

Convener: Mustapha LAATIAOUI (GANIL)

16:15 → 16:30 Laser spectroscopy (Chair: D. Yordanov): Trap-assisted laser spectroscopy and mass spectrometry of n-deficient Pt and Ir isotopes - LoI 28 (10’+5’)

Convener: Vladimir MANEA (IJCLab-IN2P3-CNRS)

16:30 → 16:45 Laser spectroscopy (Chair: D. Yordanov): Trap assisted laser spectroscopy - LoI 7

Conveners: Dr Enrique Minaya Ramirez (IJCLab), Louis-Alexandre LALANNE (IJCLab)

16:45 → 17:00 Laser spectroscopy (Chair: D. Yordanov): Elucidating the transition in shell structure and deformation with LS of n-deficient Pd - LoI 34 (10’+5’)

Convener: Sarina GELDHOF (GANIL)

17:00 → 17:15 Laser spectroscopy (Chair: D. Yordanov): P,T violation in actinide molecules - LoI 25

Convener: Afonso SIMOES DOS SANTOS VICENTE (IJCLab)

Friday 20 March

09:00 → 09:25 Fundamental interactions (Chair: X. Fléchard): TAS measurements for weak-interaction studies - LoIs 20, 46, 47, 48 (20’+5’)

Convener: Alejandro ALGORA (IFIC (CSIC-Univ. Valencia))

09:25 → 09:40 Fundamental interactions (Chair: X. Fléchard): MORA - LoI 24 (10’+5’)

Convener: Pierre DELAHAYE (GANIL)

09:40 → 09:55 Fundamental interactions (Chair: X. Fléchard): ASGARD - LoI 50 (10’+5’)

Convener: Leendert HAYEN (LPC Caen)

09:55 → 10:10 Fundamental interactions (Chair: X. Fléchard): Search for Weak Exotic Currents with Nuclear Beta Decay - LoI 52 (10’+5’)

Convener: Maud VERSTEEGEN (LP2i Bordeaux - Université de Bordeaux)

10:10 → 10:25 Fundamental interactions (Chair: X. Fléchard): Spectroscopy of state-selected 94Ag isotopes - LoI 42 (10’+5’)

Convener: Bertram BLANK (LP2i Bordeaux)

10:25 → 11:00 General discussion

11:00 → 12:30 Visit of the DESIR facility