1. Mechanical Integration for the AD at LNL

2. Overview New reaction chamber and beam-line Telescopic Beam Line Beam Dump Summary

3. Radius ~ 90 mm (limited by the START detector and the sliding seal) Sliding-seal + multiple input/output design Inputs in 16˚ steps, from ~0˚ up to 144˚ (with respect to PRISMA) Rotation in vacuum ±8˚ Acceptance at any position ±6˚in  Possibility to install external beam dump up to ~40˚ Design and built at LNL Current reaction chamber Gamma absorption in the steel rings

4. The demonstrator at LNL New requirements of the camera for the demonstrator: Increase the radius of the chamber Low γ absorption in the demostrator angular range

5. New chamber for the demonstrator Radius ~ 110 mm Chamber fix to PRISMA Uniform thickness of 2 mm of Aluminium (demonstrator solid angle) Angular range from 0º to ~ 140º (three different shells) Different holes for target, cables, camera, … External Beam Dump from 40 o to 80° PRISMA Beam dump DEMONSTRATOR

6. New chamber for the demonstrator Reaction chamber Externall beam dump Angular range:40º-80º PRISMA Design and production, INFN-Milano and INFN-LNL

7. New chamber for the demonstrator Three shells allow to cover the total angular range Fix to PRISMA BEAM

8. Photos: AD Reaction Chamber Closed RC, connected to beam-lineInside RC

9. Distance target-AGATA ~14cm (efficiency ~6%) 58° to 130° fix 37° Distance target-AGATA ~23cm (efficiency ~3%) 38° to 130° fix 21° BEAM AXIS  Angular Range AD-PRISMA setup AD-PRISMA AXIS There is a need of a telescopic beam-line to be able to provedi with all the angles withour dismounting the detectors

10. Telescopic Beam Line O-ring Retracts back ≈ 1 m Construction and design of beam-line INFN-Milano LNL

11. Photos: Beam-line Construction of beam-line INFN-Milano OPEN CLOSED Reaction Chamber

12. External Beam Dump Placement of detectors inside the RC away from target Feed throughs Z X

13. External Beam Dump Trubo pump to get a vacuum in the reaction chamber of ~10 -6 mb START detector PRISMA Lead

14. External Beam Dump 40 o 80 o Beam Dump 16 o up to 37 o 90 o up to 120 o Not only beam dump but detectors can be placed far away from the target position, eg. Si monitor to measure elastic channel Angular coverage

15. Configurations of the RC 26 o 42 o 58 o 74 o 90 o Shell A Shell B Shell C Shell A: 0-22 & 97-122 Shell B: 17-42 & 77-102 Shell C: 37-62 & 52-82

16. Angular Coverage Chamber shells, Beam dump and DANTE

17. Summary Design and construction of a new reaction chamber for the demostrator 2 mm thickness of aluminium (no shadows for γ) Radius 110 mm Telescopic Beam Line to allow rotation of AD External Beam Dump large angular coverage. It can host detectors inside away from target position. All tested mechanically and for vacuum