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DCal Insertion Tooling 24/02/20161
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DCal Insertion Tooling DCal Insertion System feature following main components 1. One rotator : cylindric welded structure 2800 mm diameter, 1500 mm long, 1800 kg. Function : load detectors, and rotate them to right Phi angle. Design : this is roughly a « squirrel cage » than can be opened into two half cylinders in order to be be loaded. One half cylinder will be used as a handling device. This part will be qualified for loading by the contractor. 2. One rotator base rectangular structure, 3800 x 1800 mm, 1500 kg Function : support of rotator. set up in X, Y, Z, before connection to bridge. 3. Connection bridge Function : removable connection from IT to cradle 24/02/20162
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DCal Insertion Tooling : some features 24/02/20163 Rollers taken from EMCal IT Centering devices for 2 half squirrel cages Feet from EMCal IT and balls system for set up of location
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EMCal IT components to re-use on Dcal IT
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DCal Insertion Tooling : some features 24/02/20167 Configuration for 0°, 20°, 40° : « inside miniframe, short configuration » U aluminium rails not welded, removables Configuration for 60° : outside from miniframe, 60° U rails are longer than other ones
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General Configuration 24/02/20168 2 different levels 4 different spacings
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Some changes versus EMCal The PHOS compatibility leads to use 4 different spacing (instead of 2 for EMCal+extension ), for the aluminium rails used for transport and mounting of Supermodules : C-0-20-40 : 1318 mm Extension 60° : 316 mm A-0-20 : 1562 mm A-40 :1111 mm These 4 different spacings impact on some components of Insertion Tooling, which require different sizes. Request of minimum height for accessibility to PHOS lead to 2 different levels for aluminium rails, and a specific system of shuttle/carriage which is a significant part of total cost. 24/02/20169
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Insertion scenario for DCal (A+C) + PHOS A bridge located between IT and cradle is used instead of the « nose » of EMCal IT, for transfert of detectors from rotator to cradle. 24/02/201610 DCal support structure with bridge DCal support structure without bridge
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Transport from IT to experimental location 24/02/201611 C Side A Side Special A40
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Dimensions 24/02/201612 2952 1667
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24/02/201613 2- Loading C-side DCal Supermodule into Insertion Tooling. 180° Insertion scenario for DCal (A+C) + PHOS Shuttle Supermodule
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24/02/201614 3- Moving C-side DCal Supermodule inside ALICE. Connection between rails C side and Supermodule shuttle Insertion scenario for DCAL A+C & PHOS
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24/02/201615 3- Insertion of C-side DCal Supermodule. Final position of Cside DCal SM Removal of SM shuttle C side Supermodule Supermodule shuttle Insertion scenario for DCAL A+C & PHOS Shuttle in rotator
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24/02/201616 4- Loading PHOS module into Insertion Tooling. 180° Insertion scenario for DCAL (A+C) sides & PHOS
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24/02/201617 5- Insertion PHOS module inside ALICE. Final position Insertion scenario for DCAL (A+C) & PHOS
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24/02/201618 6- Loading A-side DCal Supermodule into Insertion Tooling. 180° Insertion scenario for DCAL (A+C) & PHOS
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24/02/201619 7- Insertion of A-side DCal Supermodule. Final position Insertion scenario for DCAL (A+C)sides & PHOS
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Modifications from EMCal to DCal IT 24/02/201620 1.No nose mounted on rotator : lack of room (mini frame), this point leads to design a removable bridge structure. 2.Rotation of rotator is achieved with a geared device, instead of a chain device, in order to avoid issues, that occured for insertion of EMCal extension last January, when center of gravity of the load is far from rotation axis of rotator. Discussions on the way to minimize cost of this subsystem, by exemple machining by water cutting. 3.Motion of detectors will be done with a motorized (hydraulic) shuttle instead of the EMCal hydraulic piston wich cannot be re-used because it is too bulky : miniframe, lack of room.
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Modifications from EMCal to Dcal IT 24/02/201621 Rotation by gear system instead of chain system
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Motorized shuttle to transport detectors 24/02/201622 Motorization with hydraulic motor using same hydraulic power unit than EMCal IT 3 gear stages with total reduction ratio 1:27
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Motorized shuttle to transport detectors Pro Insertion process can be operated by a single operator on A side. Operation is faster than EMCal system : DCal insertion time should be EMCal time / 2. Can be used for removal of EMCal supermodules when EMCal will be dismounted. Moderate cost impact : hydraulic motor 160 €, total cost < 4 k€, less if some components are machined in lab’s workshop. No more complexity than EMCal system. Drawbacks A shuttle can be used only for a given spacing of rails. As there are 4 different spacings, 4 different shuttles are required. Fortunately, most of parts are common, and for a shuttle to an other one, 3 different components need to be changed. Half a day should be required to convert the motorized shuttle from one rail spacing to an other spacing. 24/02/201623
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Motorized shuttles to transport detectors 24/02/201624 C-0-20-40, 1613 mm wide60° Extension, 611 mm wide A-0-20, 1857 mm wideA-40, 1406 mm wide
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Full IT with load 24/02/201625
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TOP VIEWTOP VIEW 24/02/201626
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24/02/201627
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24/02/201628 Overview of DCal + PHOS when completed
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Status SubsystemConceptualFinal designFinal drawingsInquiryQuotation Rotator + baseDone X Progress Rotating deviceDone Progress ShuttlesDone ProgressX MotorizationDone ProgressX PHOS carriageDoneProgressXXX Std DCal carriagesDone 24/02/201629
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Cost estimations 4 possible contractors for rotator + its base (deliverey 3 months after order) MEUNIER (former contractor for EMCal IT) 35 k€ without large gear SACMO (never trade with them) 49 k€ without large gear ACE (present contractor for DCal support structure) quotation late week 24 MECATLANTIC (some previous business with them) 19 k€ without large gear Large gear alone, with traditionnal milling process : 11 k€ Large gear alone with water cutting process : 5 k€ U shaped Aluminium rails : ordered by Nantes, delivered,5.2 k€ 3 Shuttles/carriages : 35 – 40 k€ 18 Standard carriages (C side)18 k€ Motorized shuttle< 4 k€
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