1. 12th HL-LHC Parameter and Layout Committee meeting

2. Click here to add footer 2 12th HL-LHC Parameter and Layout Committee meeting Outline Adding a second MQY in Q5 in IR6 with the present one to increase the optics flexibility of IR6 to reach the nominal beta* in CMS and offer the same beta* reach of ATLAS (see Riccardo’s talk) Summary of the study: constraints, standardization, environmental constraints Detailed presentation of the proposal given during the HL-LHC integration working meeting the 22 nd of August 2014 Options

3. Click here to add footer 3 12th HL-LHC Parameter and Layout Committee meeting Layout configuration MQY MCBY MQY MQY MCBY Today Upgrade Proposal Based on the arrangement of Q7 in the experimental insertions. Using existing components design with available spare parts in the stock (TE-MSC-LMF). Longitudinal dimension increased by 3650mm compared to the present situation.

4. Click here to add footer 4 12th HL-LHC Parameter and Layout Committee meeting Environmental constraints MKD: dilution kickers longitudinal position Dump lines: proximity with the cryostat and particularly with the jumper Jumpers: cryogenic junction with the QRL, shaping of junction with the service module, longitudinal position DFBM:distribution feed box longitudinal position (Left side only)

5. Click here to add footer 5 12th HL-LHC Parameter and Layout Committee meeting Talking into consideration all the constraints the new Q5 in insertion 6 could be integrated such as: The dilution kickers are not affected by the upgrade. The ejection lines are not affected by the upgrade. The jumper junction in between Q5L6 and the QRL will be either adapted on the service module on QRL side or most likely like with a link on top of the cryostat like for Q6L3. The new cryo-assembly design (cold mass items, vacuum vessel, service module…) uses existing components. The DFBM.5L6 could either shifted by 3.67m towards the DS or a longer link could be designed. New layout as proposed Eq nameMag centre from IP6Eq nameMag centre from IP6 BPMY.5L6~-214.588BPMY.5R6~205.482 MQY.A5L6-208.142MQY.A5R6208.142 MQY.B5L6-211.928MQY.B5R6211.928 MCBY.5L6 -205.779MCBY.5R6214.291

6. Click here to add footer 6 12th HL-LHC Parameter and Layout Committee meeting Using the present Q5@1.9K  QRL adjustments to bring the 1.9K circuit towards the DFBA  Phase separator integration inside a non standard service module  Very interesting in terms of spare magnets and components consumption  Vigilant integration study to be performed Adding a Q7 between the DFBA and the first DS dipole  Using the “long” Q7 existing design  Replacing the 17 th junction cryostat on the left side with existing spare cold mass  Only one cold mass to assemble  No optics solutions for HL-LHC exist yet, but it could be studied  More consuming in terms of magnets and spare components Options In order to concentrate on the HL-LHC interventions in point 1&5 during LS3, the Q5 upgrade in IR6 could be planed during LS2.

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8. 8 Cryo-assembly 8 LHCQQS_S0255LHCQQS_S0253 LHCQQS_S0254 LHCQQS_S0004 Based on the Q7 vacuum vessel with the adapted service module and covers. Components availability under study with TE-MSC-CMI.

9. Click here to add footer 9 Environmental constraints1/3 Beam Dump Q5L6Q5R6 9 https://layout.web.cern.ch/layout/navigatorcontent.aspx?nodeid=100728&versi on=STUDY&nodetype=REGION&navigator=machine https://layout.web.cern.ch/layout/navigatorcontent.aspx?nodeid=100731&versio n=STUDY&nodetype=REGION&navigator=machine

10. Click here to add footer 10 Environmental constraints3/3 Connection to the QRL Q5L6Q5R6 10

11. Click here to add footer 11 Environmental constraints3/3 Dilution Kickers MKD 11 Q5R6 Very narrow longitudinal space availability Q5L6

12. Click here to add footer 12 Layout proposal – R6 12 BPMY.5R6 = ~205.482 from=IP6; MQY.A5R6 = 208.142 from IP6; MQY.B5R6 = 211.928 from IP6; MCBY.5R6 = 214.291 from IP6; Keeping jumper connection position

13. Click here to add footer 13 Layout proposal – L6 13 BPMY.5L6 = ~-214.588 from=IP6 MQY.B5L6 = -211.928 from IP6 MQY.A5L6 = -208.142 from IP6 MCBY.5L6 = -205.779 from IP6 MQY.A and B are symmetrical Left and Right Issues: Connection to the QRL DFBM position and warm cables extensions Both are shifted by 3670mm toward the DS 3670mm

14. Click here to add footer 14 Integration issues To avoid the QRL service module displacement: combining a jumper connection Q6L3 like to the modified shape 14