36 th Biweekly meeting 26 Apr 2016 News

36 th Bi-weekly meeting 26 Apr 2016

News § TAXS- BPM § P 8 - mini-TAN, D 2 protecting mask- Layout F. Sanchez Galan, S. Evrard, WP 8 Bi-weekly meeting 26 -04 -2016

BPM: in the experimental cavern § Other WP’s currently working on the integration of the BPM inside Q 1 § § § B. Vazquez de Prada, Paolo Fessia: WP 15 R. De Maria: WP 2 D. Duarte, P. Ferracin, H. Prin, E. Todesco: WP 3 M. Sitko, V. Baglin: WP 12 T. Lefevre: WP 13 After a series of meetings with WP 15 & WP 2, we have decided to wait until the integration work finishes. BPM is still on the experimental side F. Sanchez Galan, S. Evrard, WP 8 Bi-weekly meeting 26 -04 -2016

P. Fessia-> Next HL-TCC (28 -04 -2016) F. Sanchez Galan, S. Evrard, WP 8 Bi-weekly meeting 26 -04 -2016

Current situation (CMS) F. Sanchez Galan, S. Evrard, WP 8 Bi-weekly meeting 26 -04 -2016

Present situation with VAX relocated Element Distance from the TAXS flange (CMS) [mm] 1 Quick connector 2 Gate valve 3 Quick connector 4 Bellows 5 VAX 6 Bellows 5 BPM 6 Quick connector 7 Bellows 8 Gate Valve 9 End of chassis Distance from TX 1 S [mm] 336 885 1343 1870 1330 F. Sanchez Galan, S. Evrard, WP 8 Bi-weekly meeting 26 -04 -2016

TAXS § Ongoing work: § Integrating services § RP analysis § Coming § Integration with Vacuum chamber @ experimental side F. Sanchez Galan, S. Evrard, WP 8 Bi-weekly meeting 26 -04 -2016

P 8 lay-out

TWO PROTECTION ELEMENTS FOR LS 2 (L 8) 69 mm ID aperture X Courtesy F. Cerutti i. e. mini-TAN F. Sanchez Galan, 22 April 2016 HL-LHC WP 15 Integration meeting 9

MASK EFFECTIVENESS [II] @ 2 1033 cm-2 s-1 (power), 50 fb-1 (dose) 385 urad half horizontal crossing angle factor 5 reduction in peak power density/dose in addition to the factor 2 provided by mini-TAN Courtesy F. Cerutti @ 1034 cm-2 s-1 30 W in the D 2 cold mass 5 m. W/cm 3 peak in D 2 coils i. e. 30 MGy after 300 fb-1 F. Sanchez Galan, 22 April 2016 HL-LHC WP 15 Integration meeting 10

F. Sanchez Galan, P. 22 Fessia April 2016 C. Collazos, HL-LHC WP 15 Integration meeting 11

F. Sanchez Galan, 22 April 2016 HL-LHC WP 15 Integration meeting 12 C. Collazos, P. Fessia

Summary table of LS 2 baseline activities Description WP Period Location 8 8 LS 2 P 8 Baseline Installation of TAXN for LHCb Installation of TCDDM (Mask for D 2) Combination of new TAXN and TCDDM reduce the energy deposition in the superconducting dipole D 2 (by absorbing collision debris), this way reducing the risk of quenches and damage for any operational scenario. (EDMS 1562627 & 1361110). BRAN could be integrated in TAXN as currently done for IR 1 and IR 5. Mask for D 2 [TCDDM] Mini-TAN F. Sanchez Galan, 22 April 2016 HL-LHC WP 15 Integration meeting 13

F. Sanchez Galan, 22 April 2016 HL-LHC WP 15 14

F. Sanchez Galan, 22 April 2016 HL-LHC WP 15 15

F. S a n c h e z Zoom from LHCLJ___0502 G a l a n , 2 2 A p r i 16

F. Zoom from LHCLJ___0502 S a n c h e z G a l a n , 2 2 A p r i 17

F. Zoom from LHCLJ___0509 S a n c h e z G a l a n , 2 2 A p r i 18

F. Zoom from LHCLJ___0509 S a n c h e z G a l a n , 2 2 A p r i 19

TCDDM & mini-TAN Open issues (some of them) • TCDDM Integration in P 8 layout challenging • Radiation scenarios. Activation of the mask requires shielding? Is it better a 10 y lifetime mini-TAN+ TCDDM and replace them in LS 4 or a compatible design? LS 2+ LS 4 Replacement F. Sanchez Galan, 22 April 2016 HL-LHC WP 15 Integration meeting 20

Actions (WP 15 coordination) Action n. team 1 WP 10+WP 3+ WP 9 Due date 06/05/2016 2 WP 10 ASAP 3 4 5 WP 8 WP 5/WP 8 S. Chemli ASAP 6 S. Chemli ASAP 7 WP 10 ASAP 8 WP 2 ASAP 9 WP 2+WP 14 20/05/2016 10 WP 5 20/05/2016 Description Can a short tungsten mask inside the. D 2 do the work? It would be re-using the same concept as to protect D 1 but with the differences that these are continuous losses therefore we need to evacuate the heat to the cryo system via probably a thermalisation. In addition as the losses are on the inner side of the magnet we could use only one half moon. The mask would be clamped on the outside of the cold bore WP 7: is this effective? Which is the minimum length needed ? how many watts WP 3: can we install it? Ca new provide thermalisation WP 9: ca new take away the heat load Could we live with only the mask without the TAN? The TAN seems protecting more the iron/collars then the coils. Could a thicker mask solve alone the problem? Confirm is scintillators are always there Confirm the responsibility of new mask Update LHC plans of point 8 in status of present LHC machine Give appropriate name to the new mask. TCDDM looks misleading Confirm that the aperture of the presently proposed mask is ID 69 mm and the minimum length in case of us of tungsten alloy instead of Cu Confirm that the 69 mm aperture (if confirmed by WP 7 ) fits aperture requirement in the proposed area If the proposal in action 1 cannot be applied we need to move the y chamber of 1. 5 -2 meters: confirm that this is possible and provide the dimensions for the new Y chamber If the proposal in action 1 cannot be applied say if the TCTs can be moved of 2 meters toward the IP

§ Proposed NEW names (A. Rossi- R. De Maria. S. Chemly) TCLM. 4 R 8. B 1 and TCLM. 4 L 8. B 2

Open questions § Currently focusing on Mini-TAN design compatible with a BRAN-C type § Remote handling installation/removal § Confirm need of scintillators at BRAN/Mini-TAN position. § OPTICS: Y-chamber § D 2 mask: Next discussion 20/05 but we need to answer many questions before getting there and making the meeting useful (WP 15 -P. Fessia)