1 / 11

INTRODUCTION TO THE CLIC PROJECT AND THE CLIC PRE- ALIGNMENT STUDIES

INTRODUCTION TO THE CLIC PROJECT AND THE CLIC PRE- ALIGNMENT STUDIES. Hélène MAINAUD DURAND, BE/ABP/SU, 04/05/2010. Status of the study.

reya
Télécharger la présentation

INTRODUCTION TO THE CLIC PROJECT AND THE CLIC PRE- ALIGNMENT STUDIES

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. INTRODUCTION TO THE CLIC PROJECT AND THE CLIC PRE-ALIGNMENTSTUDIES Hélène MAINAUD DURAND, BE/ABP/SU, 04/05/2010

  2. Status of the study The Compact Linear Collider (CLIC) Study is a site independent feasibility study aiming at the development of a realistic technology at an affordable cost for an electron-positron Linear Collider in the post-LHC era for Physics up to the multi-TeV center of mass colliding beam energy range (nominal 3 TeV).  next milestone of this project is a Conceptual Design Report (CDR) that must be ready end of 2010.

  3. Status of the study • Based on a two beams technology (Drive Beam, Main Beam) • Basic components: • DB: PETS, quads and BPM • MB: RF structures, quads and BPM • Each main linac consists of sequences of 2m modules • 4 lengths of MB quad (0.5 m, 1m, 1.5m, 2m) •  5 types of modules 2 m

  4. CLIC Pre-alignment requirements Strategy of alignment • Mechanical pre-alignment Within +/- 0.1 mm (1s) • Implementation of active pre-alignment Girders and quadrupoles within ± 3 mm (1s) • Implementation of beam based alignment and beam based feedbacks Active positioning to the micron level Stability to the nanometer level on the MB quads

  5. CLIC Pre-alignment requirements Strategy of alignment The expected performance on the active pre-alignment is of the order of several micrometers over sliding windows of at least 200 m.  realistic data: 15 µm (1σ) (solution proposed in CDR)  target: 3 µm (1σ) CLIC accelerator will be « laser straight ». The solution proposed in the CDR is based on overlapping stretched wires and Wire Positioning Sensors (WPS).

  6. General strategy: determination of the position of the components Geodetic Reference Network (GRN) Backbone for all the tunnels and areas Will allow the installation of all services and of the MRN 6

  7. General strategy: determination of the position of the components Geodetic Reference Network (GRN) Metrologic Reference Network (MRN) • As it is not possible to implement a straight alignment reference over 20 km: use of overlapping references • Two references under study: • a stretched wire • a laser beam under vacuum 7

  8. General strategy: determination of the position of the components Geodetic Reference Network (GRN) Metrologic Reference Network (MRN) Support Pre-alignment Network (SPN) 8

  9. General strategy: determination of the position of the components Geodetic Reference Network (GRN) Metrologic Reference Network (MRN) Support Pre-alignment Network (SPN) Alignment and fiducialisation of each component on the supports (AFC) 9

  10. Status of the different solutions Strategy towards the feasibility • Only one solution ready for CDR : stretched wire + cWPS • design of a new mechanical interface and associated calibration bench  improve the accuracy (target : accuracy < 5 μm) • cost study in definition for 50 000 units. Stretched wire for MRN and SRN 10

  11. Summary: proposed solution for CDR Determination of the position of the components:  stretched wire + WPS sensors for MRN and SPN

More Related