1. Technology Department LSS2 modifications Impact on the vacuum systems LTEX - 18/01/2011 Eric PAGE – TE-VSC

2. Technology Department IntroductionFeasibility - IntegrationProduction planningInstallation planningConclusion

3. Technology Department Current situation 4L2, part of VACSEC A4L2.C Insertion of a TCTVA Arc 1-2 IP2: ALICE Introduction Collimator areaID800 area

4. Technology Department Current layout 4L2, part of VACSEC A4L2.C Insertion of a TCTVA Constraint:  acceptable is 1360 mm maximum 2.Collimators should move along their 5 th axis Arc 1-2 IP2: ALICE Introduction

5. Technology Department Current layout 4R2, part of VACSEC A4R2.C Arc 2-3 IP2: ALICE Introduction

6. Technology Department Collimator area on 4L2 side, identical on 4R2 side (outer) new issue to solve: supports collision Feasibility - Integration New TCTVA New module New chamber Arc 1-2 IP2: ALICE

7. Technology Department ID800 area on 4L2 side, identical on 4R2 side Feasibility - Integration Arc 1-2IP2: ALICE

8. Technology Department Vacuum elements necessary for inserting the new TCTVA:  4 modules and 2 chambers. Most of the components is available from the stock which needs to be completed. Time necessary to produce these elements (from the drawings to the reception):  3 months. Collimator area Production Planning

9. Technology Department Fabrication of 2 new VCDG_ vacuum chamber and consolidation of spare elements: Time necessary to produce these elements (from the drawings to the reception):  4.5 months (the design office and the workshop should be informed 3 months in advance).  Processes: LHC database modification Design Office Mechanical machining 3 thermal treatments Degreasing before firing Final cleaning Leak detection Metrology Internal transports Validation test  Material: 4 flanges Ø 909 10 m tubes ID800 6 Helicoflex ® gaskets 4 DN150 CF 4 supports for 2 tubes Production Planning ID800 area

10. Technology Department Steps necessary for the installation for one sector :  Venting of the vacuum sector,  Displacement of the moving elements (TCTH, modules, VCTY_, VCTCR, VCDGA + supports),  Installation of the old support to the new location + installation of new supports (new modules),  Installation of the new modules + new VCDG_ chamber,  Survey of the moved and installed elements,  Closing of the sector,  Pumping and leak detection of the sector,  Bakeout installation,  Bakeout and NEG activation,  Bakeout desinstallation and cleaning of the area Time and TE-VSC team necessary to ensure the work (on one side):  1.5 months with 3 people (helped punctually by a transport team). Another team will pull the cables for controlling the new vacuum pumps + pumps and instrumentation moving (done in parallel). Installation Planning Collimator and ID800 area on one side

11. Technology Department Conclusion The new vacuum layout ensures the ZDC movement (1360 mm down to the IP). The new vacuum layout and special fabricated components allow the 2 collimators 5 th axis motion. Integration Collimators area: 3 months. ID800 area: 4.5 months. Production Planning 1.5 months for vacuum sector A4L2.C. 1.5 months for vacuum sector A4R2.C. Installation Planning

12. Technology Department SPARE SLIDES

13. Technology Department 4L2, database configuration, B1 (external beam line): Current database Modified database New vacuum elements Feasibility

14. Technology Department 4L2, database configuration, B2 (internal beam line): Current database Modified database New vacuum element Feasibility

15. Technology Department C urrent situation of 4L2 and 4R2 concerning the TCTH collimator bakeout NO JACKET REMARK #1

16. Technology Department 4L2 and 4R2 are symmetric for the integration but… The mechanical aperture is different between 4L2 and 4R2 around Y chambers: REMARK #2.1 VMGAB VCTNP Apertures are 80 to 80mm Apertures are 65 to 80 mm VTCYD chamberVTCYB chamber B1 B2 4L2 4R2 IP2

17. Technology Department 4L2 and 4R2 are symmetric for the integration but… The mechanical aperture is different between 4L2 and 4R2 around BPMs: REMARK #2.2 Apertures are 80 to 80 mm Apertures are 80 to 63 mm 4L2 4R2 VAMTK B1 VAMTJ BPMWITCTHBPMWB IP2 TCTH B2

18. Technology Department How does a vacuum module (VM) looks like internally:

19. Technology Department Creation of new vacuum elements for 4L2: VMTBA: Collimator Module - DN100/QCF100 - 80/80  aperture is 80 mm, L=220 mm, the bellow connected on the collimator side accepts the 5 th axis motion. VMTQC: Collimator Pumping Module - DN100/QCF100 - 80/80  aperture is 80 mm, L=460 mm, the bellow connected on the collimator side accepts the 5 th axis motion. VCRLP: Vacuum - Chamber - Circular - Long Straight Section - ID67 - OD70- Type LP - QCF100/QCF100  aperture is 67 mm, L=3800 mm. Integration issues: The connections of QCF100 (DN100 conical flanges) require space for a MKT collar: Ø is 230 and thickness is 35 mm. The thickness of the bakeout (PI thin layer) envelop for the VCRL% chamber is 5 mm which means a total outer diameter of 70+10=80 mm.

20. Technology Department Creation of new vacuum elements for 4R2: VMTBB: Collimator Module - QFC100/DN100 - 80/63R  aperture is 80 to 63 mm, L=220 mm, the bellow connected on the collimator side accepts the 5 th axis motion. VMTQD: Collimator Pumping Module - QFC100/DN100 - 80/63  aperture is 80 to 63 mm, L=460 mm, the bellow connected on the collimator side accepts the 5 th axis motion. VCRLP: Vacuum - Chamber - Circular - Long Straight Section - ID67?? - OD70?? - Type LP - QCF100/QCF100  aperture is 67 mm??, L=3800 mm, same chamber as 4L2.

21. Technology Department ID800 area on 4L2 side