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Development and validation of RasChain alignment systems for the pre-alignment of CLIC Niels van Bakel, Bram Bouwens,Harry van der Graaf, Henk Groenstege,

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Presentation on theme: "Development and validation of RasChain alignment systems for the pre-alignment of CLIC Niels van Bakel, Bram Bouwens,Harry van der Graaf, Henk Groenstege,"— Presentation transcript:

1 Development and validation of RasChain alignment systems for the pre-alignment of CLIC Niels van Bakel, Bram Bouwens,Harry van der Graaf, Henk Groenstege, Joris van Heijningen, Ad de Snayer, Robert Hart, Gerrit Brouwer Nikhef CLIC Workshop CERN, Jan 29, 2013

2 RasChain First: Rasnik-RasDif performance studies at Nikhef

3 RasChain: interconnected Rasnik systems for basic CLIC units of 2010 mm

4 All parts received - installation June 1

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6 6 ChainPlates including 2x RasNik 4 m 2x RasDif 4 m 3x proximity systems Proximity Rasnik Rasnik RasDif

7 Fine adjustment of focal length of standard Melles Griot lenses: f = 1000 mm: apply UV light LEDs, infra-red light LEDs Quite some trouble with LeLac LED/Laser power box (USB controlled) (green) semiconductor lasers: unstable (power, position?)

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13 6 ChainPlates including 2x RasNik 4 m 2x RasDif 4 m 3x proximity systems Proximity Rasnik Rasnik RasDif

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22 In preparation: calibration station for RasChain on (existing) steel bar (6.8 m long) 3 support plates variable mount Measurements: 3D machines, RasNiks, streched wire

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