Update on the Laser Beam Line

Valentin Fedosseev

AWAKE Collaboration meetingCERN, 12.03.2015

Laser lines in AWAKE

• Laser beam line to plasma cell• Diagnostic beam line (“virtual plasma”)• Laser beam line to electron gun

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Laser line work package

12/03/2015

• Arrangement of the laser lab at CERN• Beam transfer optics and mechanics– To plasma cell– To photoinjector– Laser beam monitoring and control

• Implementation of laser safety requirements– In conjunction with CERN access system

• Links for remote control of laser

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Civil engineering works• Laser core completed• Trench in TT41: to be painted and covered• Laser room painted

12/03/2015

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Laser beam to plasma cell

12/03/2015

Functional scheme of the laser beam line to the plasma cell indicating the mirrors (blue) and their surrounding vacuum tanks, the laser safety shutters (green) and laser beam dumps (violet).

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Vacuum laser line

12/03/2015

Design of general layout has been approved

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Vacuum laser line

12/03/2015

Work on detailed drawing is close to completionProcurement is started

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Cooling and ventilation

12/03/2015

Requirements for laser cooling

• Water pressure: 2 – 8 bars• Water temperature: 18°C - 20°C

Water supplies available in the tunnel

Demineralized water• Water pressure: up to 16 bars• Water temperature: 28°C

Chilled water• Water pressure: up to 16 bars• Water temperature: 6°C

Solution proposed by CV

To install a heat exchanger with a closed water circuit between laser and chilled water with a water pump to fulfil laser cooling requirements

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Cooling and ventilation

12/03/2015

Supply duct

H14 filter

Return duct

Extraction duct

TSG40 ventilation systemEN/CV AWAKE Project

Smoke damper

Work on installation of air ducts starts on this week

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Laser Room Integration

– Arrangement of laser components on optical tables has been proposed by Amplitude

– Discussions on possibility to reduce the size of pulse compressor chamber took place (MPP, Amplitude and CERN) - > Diameter 120 cm is agreed.

– Integration is on-going: • Ventilation• Supporting structures for hoist, shelves and cables • Racks and cable trays• Services

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Laser integration

12/03/2015

Layout proposed by Amplitude and its 1st integration plan

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Laser integration

12/03/2015

Latest version of laser room integration

Proposal for hoist rail support

Racks for laser control and RF equipment

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Cabling requests

12/03/2015

Purpose Begin End N wires Cable type

Mirrors proton line TSG40 RL2 TT41 RL2 14 x 2 NG28

Mirrors electron line TSG40 RL2 TCV4 RL3 14 x 2 NG28

Laser shutter 1 TSG40 RL2 TT41 LS1 6 x 2 + 6 x 2 NE12 x 2

Laser shutter 2 TSG40 RL1 TT41 LS2 6 x 2 NE12

Laser beam dumps 1, 2 TSG40 RL1 BS 6 x 2 + 6 x 2 NE12 x 2

RL1 RT1RL3

PP1

LLRF

LS1

LS2

RT2

LBD1

LBD2

RL2

PP2

Motorization

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Cabling requests

12/03/2015

Ethernet outlets, PoE and RS232 cables

Purpose cable Begin End N cables Cable typePoE Cameras TSG40 RL1 TT41 PP1 10 x PoE LAN Rj45 VA8C

Filter wheels TSG40 RL1 TT41 PP1 8 x RS232 Sub-D 9 MCA8

RL1 RT1

RL3

RL2LLRF

RT2

RJ45 x4

RJ45 x4

RJ45 x20

RJ45 x4 PP1PP2

WiFi access pointin Laser Room

Purpose socket Position Type N socketsLaser control TSG40 RL1 TN 2

Mirror controls TSG40 RL1 TN 6

Beam diagnostics TSG40 RL1 TN 6

Timing TSG40 RT2 TN 4

Beam diagnostics TT41 PP1 TN 4

Beam diagnostics TCV4 RL3 TN 4

Beam diagnostics TCC4 PP2 TN 4

General TSG40 GPN 2

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Access to laser areas

12/03/2015

Sectorization proposal under discussion

AlwaysAccess to sector 7 is restricted to laser users

During laser beam alignmentAccess to sectors 3 and 6 is restricted to laser users

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Time schedule

• Installation of ventilation ducts and water pipes: March-April 2015• Installation of doors : March 2015• Installation of supporting structures: April-May 2015• Cable tray: May 2015• Electrical, control, Ethernet cables: June 2015• Fire detection and alarms: June-July 2015• CV hardware commissioning. Clean room ready: July-August 2015 • Laser tables: September 2015• Vacuum line installation: September-November 2015• Access control: October-November 2015• Compressor installation: November 2015• Laser installation: December 2015 – February 2016• Beam transport optics: January-February 2016 • Laser HWC: March-June 2016

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Acknowledgments

• EN-STI-LP: Christoph Hessler, Misha Martyanov• EN-MME : Nicolas Chritin, Cedric Delory• TS-VSC: Jan Hansen, Friederike Salveter• EN-MEF: Ans Pardons, Frederic Galleazzi, Vincent Clerc,

Marzia Bernardini, Michel Arnaud, Patrick Vincent• EN-CV: Michele Battistin, Frederic Teixeira• GS-SE: Richard Morton, Alex Selles• EN-HE: Jean-Louis Grenard • GS-ASE: Vitor Martins De Sousa Dos Rios

12/03/2015