1. Linac 4 SPL tunnel Material access and services shaft Personnel and material access shaft Klystron gallery Emergency exit shaft Transfert line to PS2 Personnel passage Emergency exit shaft Personnel passage Status of integration/civil engineering and open questions Sylvain Weisz – SPL Collaboration Meeting – 11 Nov 2009

2. SPL Tunnel Machine & Tunnel Services JMB 03-07-2009 Preliminary integration study: Preferred to initial model  if we have many waveguide between the two tunnels J-M. Bianco Klystron gallery Ø 6m SPL tunnel Ø 4.5m

3. Tunnel Machine Tunnel Services SPL Tunnel Machine & Tunnel Services JMB 03-07-2009 Transport zones Preferred to initial model  J-M. Bianco

4. Couplers from above would be accessible Waveguide network would block access to couplers from below (+ gauges, controls, cooling pipes, etc…)  Would need a larger tunnel to access from the other side of the modules (Compatibility with cryoline?) J-M. Bianco Coupler position ?

5. SPL Tunnel Machine & Tunnel Services JMB 03-07-2009 Klystron Modulator (capacitor bank + switches + pulse transformer) Control Maximum space available per cavity for the underground RF power source Individual RF power unit for 1 cavity for the Low Power version (P av ~ 4 kW) RF power generation fills a Ø6m gallery already for the LP-SPL version:  Opt for a Ø7m klystron gallery  What about the HP-SPL version? Content of the klystron gallery ?

6. Linac 4 SPL tunnel Material access and services shaft Personnel and material access shaft Klystron gallery Emergency exit shaft Transfert line to PS2 Personnel passage Emergency exit shaft Personnel passage Can we install klystrons on the surface ?

7. Linac 4 Material access and services shaft Personnel and material access shaft Klystron gallery Emergency exit shaft Transfert line to PS2 Personnel passage Emergency exit shaft SPL tunnel β=.65 region Waveguide shafts (1 shaft/2 modules)

8. Linac 4 Computer Center n_TOF target area TI2 injection line SPL tunnel – slope = 1.7% Transfert line to PS2 – slope = 8.4% ~550m SPL depth ~30m Slope and depth of the SPL SPL below the ISR!

9. ISR Tunnel

10. Linac 4 SPL tunnel Material access and services shaft Personnel and material access shaft Klystron gallery Emergency exit shaft Personnel passage Emergency exit shaft Transfert line to PS2

11. Shaft Ø 2.8m for 16 waveguides β = 0.65 segment β = 1 segment Waveguide shaft and klystrons in surface buildings

12. Linac 4 SPL tunnel Material access and services shaft Personnel and material access shaft Klystron gallery Emergency exit shaft Transfert line to PS2 Personnel passage Emergency exit shaft Personnel passage Waveguide length could go up to 80m

13. Integration Open Questions (some urgent questions only … ) ◊Position of the couplers ? ◊Will there be a separate cryoline? ◊Architecture of the RF power: ◊Number of cavity per klystron ? ◊Size of the modulators for LP-SPL and HP-SPL versions ? ◊In case of one klystron for 2 cavities (or more?), where do we install the waveguide splitting? ◊Can we have 80m long waveguides?