Interconnection work for the the QRL cryogenic extensions Ivo Slits - AT/CRI Ivo Slits, AT/CRI-ci, Introduction A cryogenic extension allows to link the QRL jumpers to different clients (DFBA, DFBL, Q6, ACS). The diameter of the cryogenic extensions is mm Ivo Slits, AT/CRI-ci, Introduction They are composed of several interconnection pipes (between 4 and 9 pipes) with different internal diameters (from 10 mm to 80 mm) Interface of the cryogenic extension element QRLXD (sector 8-1) Interface of the cryogenic extension element QRLXE (sector 8-1) Ivo Slits, AT/CRI-ci, Introduction Type, number and location Ivo Slits, AT/CRI-ci, LHC Underground Sites Cercle vert: rallonge cryogenique 2x Ivo Slits, AT/CRI-ci, Activities and responsibilities Design and Manufacturing of elements and external supports => Airliquide Installation of ext. support and elements=> AT-ACR Interconnection => AT-CRI Leak-testing => AT-VAC Final testing (leak/pressure/cold test) => AT-ACR Note: supply of welding rings for internal tubes and MLI (Jehier) is AT-CRI Ivo Slits, AT/CRI-ci, Fabrication QRLXD Cryogenic extension HCQRLXD100-AL000001 Ivo Slits, AT/CRI-ci, Fabrication Cryogenic extension QRLXD Element HCQRLXD100-AL000001 Ivo Slits, AT/CRI-ci, Fabrication QRLXE Cryogenic extension HCQRLXE100-AL Element HCQRLXE101-AL Element HCQRLXE102-AL Element HCQRLXE103-AL Element HCQRLXE104-AL000001 Ivo Slits, AT/CRI-ci, Fabrication Cryogenic extension QRLXE Element HCQRLXE103-AL Element HCQRLXE101-AL000001 Ivo Slits, AT/CRI-ci, Engineering design Straight and elbow pipes are in Invar material The extremities of each interconnection pipes are equipped with Stainless Steel tubes Most of cryogenic extensions have no active thermal shield. Each interconnection pipe is equipped with MLI. Only cryogenic extensions QRLXF and QRLXH (linking ACS) have active thermal shield. The vacuum envelope is in Stainless Steel. The number of elements composing one cryogenic extension can vary from 1 to 4 elements. Interconnection pipes are supported inside the vacuum envelope with spacers The thermal losses per meter is around equal to ~ 1.5 W/m. External interconnections are made with rigid sleeves. Horizontal cardan compensator on QQS jumper side. Flexible hoses are added on Q6 and DFBA side for the cryogenic extensions QRLXD, QRLXA, QRLXC, QRLXK and QRLXL. Ivo Slits, AT/CRI-ci, Interconnection design & procurement Status Ivo Slits, AT/CRI-ci, Flowdiagram interconnections 1 jour Ivo Slits, AT/CRI-ci, Interconnection Interfaces Interfaces Interconnections : welding : same interface type as standard jumper connection >12/10 mm >17.2/15.2 mm >22/20 mm >33/30 mm >380mm (lvre) Some are different (QRLXK/DFBA) >102mm x 2 (lvre) >59mm x 2.5 (lvre) MLI : 30 layers on each interconnection pipe Ivo Slits, AT/CRI-ci, Example interconnection drawing (QRLXD) Ivo Slits, AT/CRI-ci, Example interconnection drawing (QRLXD) Ivo Slits, AT/CRI-ci, Planning (1) Ivo Slits, AT/CRI-ci, Planning (2) Planning (supplied by R. Girardot on ) Ivo Slits, AT/CRI-ci, Resources Resources needed for following activities: Welding (automatic & manual) Assembly (MLI, thermal shield) Working platforms for accessibility Ivo Slits, AT/CRI-ci, Remaining points Safety (work at altitude m) Installation Procedures Welding qualifications / trials Workpackage?