Repair of SA2_XTD1_ATT

Status 12h30:
The current MID users took beam until 9am, only then the machine could start preparing for the tunnel access e.g. by decoupling the South branch, powering down magnets and taking XTD1 out of the interlock. The VAC team was ready to go into the tunnel for the repair in XTD1 already since 8am.
Unfortunately, the tunnel access of the VAC team got delayed beyond 9am by one more hour to 10am because the DACHS terminal at ground level of XS2 was found defective, and releasing the tunnel interlock took substantial time.
DESY experts went onsite and informed that a proper repair of the DACHS terminal can only happen next monday.
Only with a workaround, finally the VAC team was able to use the elevator to bring the required large venting and pumping equipment down to the tunnel level.
The vacuum works are ongoing with highest priority.

Status 14h20 :
VAC has finished the intervention, informed BKR and PRC, and is leaving the tunnel. Tunnel search team can start.

Status 15h00:
Tunnel search almost finished (also found some technical obstacles), Seeding experts are informed and ready to start their work.