KTAG Mechanics, Optics and Cooling Progress and Schedule NA62 CEDAR Meeting 26March20121

KTAG Schedule for Technical Run Build stage-1 detectorJanuary 2012 to July 2012 – Half detector (4 octants)[Incorporate improvements later] – 32-channel readout[Final design is 64] – Preliminary optics [defer cost and complexity] NA62 Detector ActivitiesJune – December 2012 – DCS (Detector Control )15 – 30 June – Dry run and DAQ integration15 – 31 July – Install KTAG & IntegrationAugust - September – Technical Run12 October – 9 December – Data to understand beam backgrounds, finalise Mechanics & Optical design and understanding of DAQ & Electronics for 2014 NA62 CEDAR Meeting 26March20122

3 Lightguide, PMTs, Electronics Support cylinder bolted to CEDAR Cooling block Lens Mirror ATEX nitrogen Enclosure Support Frame

Liverpool Design and Fabrication DesignFabrication – Support TubeIn CERN awaiting work on CEDAR Nose – Light guide 1Tooling and methodology complete Cut and polish cones end of March – Remaining 3 lightguides End of April (Mylar inserts mid May) – Complete Detector FrameworkParts and brackets end of March – Optical support cylinderCompletion end of April – ATEX-2 chamber & supportsCompletion end of April – Lens & mirror mounts - MarchOutside company – April – Cooling assembly – AprilCompletion end of May (in house) – Environmental Case & Frame Preliminary design of case – MarchOrder materials & agree schedule end March Installation Frame – end MarchCompletion end of May (in house) Final design of case - mid AprilDelivery end May by outside company – Lightguide & electronics box – AprilComponents (outside company) – May NA62 CEDAR Meeting 26March20124

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Development Work Gluing conical inserts Measuring reflectivity Cooling and Chiller NA62 CEDAR Meeting 26March20127

Gluing method Standard aluminium surface preparation – Degreasing – Abrading and removing loose particles or – Anodising with phosphoric acid Mylar mounting - vacuum pen development NA62 CEDAR Meeting 26March2012 8

Reflectivity measurement Variable – divergence lens system. The divergence angle θ increases as the positive element is moved toward the input by the distance x. G. A. Massey, Beam Diverging Lens System for High Power Laser Transmitters, Applied Optics, Vol. 11, Issue 12, pp. 2981_1-2981_1 (1972) NA62 CEDAR Meeting 26March2012 (small-angles) 9

Draft Chiller Requirements (March 2011) T rise0.5deg C0.25deg C0.10 deg C Bore4mm6mm8mm4mm6mm8mm4mm6mm8mm Flow Pressure Tabulate Flow and pressure for different bores of the internal pipe work and desired temperature rise Chiller Specifications (preliminary web-trawl) ModelPowerFlow 0 bar)Pressure (bar) Fryka DLK  C Grant RC350G 20  C lpm) Neslab Thermoflex 900/P2 40  C 12.5 bar)7 bar Jubalo FC600S 20  C Cole-parmer WU  C Lauda WK 20  C10 10NA62 CEDAR Meeting 26March2012

Thermo-Scientific (NESLAB) Two product lines – ThermoFlex (5 models: 0.75kW to 4.4kW) ‘newer’ 5C to 40C P2 pump gives 4.1b Eg. ThermoFlex 1400 (1170W) = £3,773 + VAT (28 days) – Merlin (5 models: 0.74kW to 4.8kW) ‘older’ – only some models now available -15C to 25C P2 pump gives 4.2b Eg. M33 (1142W) = £4241+VAT (35days) 11NA62 CEDAR Meeting 26March2012

The Small Print... Auto-restart – Both can be configure to re-start if mains power is interrupted. Communications (optional?) – RS232/485 I/O (optional?) – Merlin: 12/24V remote start/stop + external RTD – ThermoFlex: 15-pin I/O connector Relays for: low level, pump on/off, low flow + 2 configurable Remote start/stop 10mV/deg C analogue output of temperature 10mV/deg C remote set point (eg 200mV=20deg C) 12NA62 CEDAR Meeting 26March2012

Liverpool Assembly & Testing NA62 CEDAR Meeting 26March201213

Assembly Frame with Support Tube NA62 CEDAR Meeting 26March

15NA62 CEDAR Meeting 26March2012 Lightguide, PMTs, Electronics Support cylinder bolted to CEDAR Cooling block Lens Mirror ATEX nitrogen Enclosure Support Frame

16NA62 CEDAR Meeting 26March2012 Environmental Cover Light-tight Thermally insulated Faraday cage Fire resistant

Liverpool Assembly Assembly Frame with Support CylinderComplete Detector Support Frame (2 halves)End April ATEX enclosure and Mirror mountsEarly May Lightguides and PMT housings (1 half)Mid May Electronics & Octant wiring (1 half)End May Cooling panels, chiller & PT100’sEarly June Cabling and patch panels (1 half)Mid June Environmental Enclosure (2 halves)Mid June Mechanical installation testEnd June External cabling to EE patch panelEarly July Temporary LED system and System testJuly Pack and ship to CERNEnd July NA62 CEDAR Meeting 26March201217

UK Goals for Technical Run K+ Identification: measurement of efficiency for K and π – Measure normalisation: Actual light/MC light – Measure shape & distribution of light spot – compare with MC Thermal Environment – Measure temperature and temperature gradient – Establish operating parameters for Chiller Assess effectiveness of Monitoring & LED systems Electronics – PMT rates, saturation, cross talk, time resolution – Trigger, DAQ, links to central control – CEDAR motor control and display Beam measurement programme NA62 CEDAR Meeting 26March201218