Participants:

W. Bartmann, L. Bromiley, Y. Dutheil, F. Valchkova-Georgieva, S. Yue

• Booster location
• No longer in between the 2 collider rings
• Present location is now around 160mm from the middle
• Agreement that we can presently consider the booster still in the middle of the collider rings on the PB straight section because
• Symmetric design is simpler
• We can offset it slightly at a later point with minor changes to the transferline geometries
• We can use small chicanes at the entrance/exit of the straight section to bring the booster in the center
• Inside of the ring is reserved for transport so beam transfer on the outside would be favored
• Beam transfer lines presently use the inside of the ring, geometry and crossing do not favor outside placement
• Injection extraction equipment placement
• The kicker systems require equipment nearby with good shielding to avoid exposure to the tunnel radiation
• Present design
• Gallery only covers 330m on each side
• First alcove is ~700 beyond the end of the gallery
• Agreement that alcoves can be created where needed
• Question of the dump
• Present concept places the dump point 5m away from the collider
• Discussions with STI to be caried to keep or amend this value
• Needed inputs from ABT
• MADX output from the survey
• Only work within 1000m -> survey zero (0, 0, 0) at the crossing between the 2 collider trajectories at the center of PB
• ABT to send first MADX files no later than in 2 weeks
• Fani can start integrating and we can review the proposition in early may
• Need to include
• space reservation for the elements placed on the line
• Space reservation and locations for the alcoves

Actions

• ABT: share location and required space for equipment alcoves
• ABT: share MADX survey file before 17/04 of the PB lines
• Include envelopes of special ABT equipment