CONCEPTUAL SPECIFICATION TCTPH/TCTPV – LHC BPM WP5 Equipment/system description Tungsten-based tertiary collimators with pick-up buttons (TCTP, Target Collimator Tertiary with Pick-up) are used in the LHC to protect the superconducting triplets and the experiments in each experimental insertion against horizontal (TCTPH) and vertical (TCTPV) beam losses. A pair of TCTPH and TCTPV collimators is installed in front of each triplet, on the incoming beam, for a total of sixteen (16) collimators in the LHC. The new design with jaws has been adopted in all IRs during LS1. Operationally, these collimators are not supposed to intercept primary or secondary beam losses. They are therefore built using a heavy tungsten alloy that maximises efficiency in cleaning but that it is not robust. The need to improve the TCTP collimator design in view of the updated beam parameters for the HL-LHC design is being assessed. Layout Versions LHC sectors concerned CDD Drawings root names (drawing storage): V 1.1 IR7 to be created by S. Chemli Project Engineer in charge of the equipment WP Leader in charge of the equipment O. Aberle S. Redaelli Committee/Verification Role Decision Date PLC-HLTC/ Performance and technical parameters Rejected/Accepted 2014-07-01 Configuration-Integration / Configuration, installation Rejected/Accepted 20YY-MM-DD and interface parameters TC / Cost and schedule Rejected/Accepted 20YY-MM-DD Rejected/Accepted/Accepted Final decision by PL 20YY-MM-DD pending (integration studies, …) Distribution: HL-TC Rev. No. Date Description of Changes (major changes only, minor changes in EDMS) X.0 20YY-MM-DD Description of changes
SPECIFICATION TCTPH/TCTPV – LHC BPM WP5 Equipment/system description Tungsten-based tertiary collimators with pick-up buttons (TCTP, Target Collimator Tertiary with Pick-up) are used in the LHC to protect the superconducting triplets and the experiments in each experimental insertion against horizontal (TCTPH) and vertical (TCTPV) beam losses. A pair of TCTPH and TCTPV collimators is installed in front of each triplet, on the incoming beam, for a total of sixteen (16) collimators in the LHC. The new design with jaws has been adopted in all IRs during LS1. Operationally, these collimators are not supposed to intercept primary or secondary beam losses. They are therefore built using a heavy tungsten alloy that maximises efficiency in cleaning but that it is not robust. The need to improve the TCTP collimator design in view of the updated beam parameters for the HL-LHC design is being assessed. Layout Versions LHC sectors concerned CDD Drawings root names (drawing storage): V 1.1 IR7 to be created by S. Chemli Project Engineer in charge of the equipment O. Aberle WP Leader in charge of the equipment S. Redaelli Committee/Verification Role Decision Date PLC-HLTC/ Performance and technical parameters Configuration-Integration / Configuration, installation and interface parameters TC / Cost and schedule Rejected/Accepted Rejected/Accepted Rejected/Accepted 2014-07-01 20YY-MM-DD 20YY-MM-DD Final decision by PL Rejected/Accepted/Accepted pending (integration studies, …) 20YY-MM-DD Distribution: HL-TC Rev. No. Date Description of Changes (major changes only, minor changes in EDMS) X.0 20YY-MM-DD Description of changes CONCEPTUAL