Scaricare la presentazione
La presentazione è in caricamento. Aspetta per favore
PubblicatoGraziano Corradi Modificato 6 anni fa
1
Compositi per ATLAS Overview del processo per la costruzione supporti per ATLAS Tempistica
2
Supporti per una end-cap per ITk
2 set di 3 mezzi cilindri concentrici Ogni mezzo cilindro con una decina di half-ring Sugli half-ring si montano i moduli a pixel Gli half ring sono sandwich di fibra di carbonio e carbon-foam con in mezzo circuiti elettrici e un tubo di raffreddamento (Ti). Tre tipi di half rings a seconda dello strato. 54 half rings nel rivelatore. Half ring
3
J.Pater - Endcap Rings Status
Current Design: As simulated for ITk Layout task force. Active inner Radii per layer: 275mm 212.5mm 150mm The rings themselves can’t be made smaller. In fact they have to become slightly larger for 384-row chip. 9mm at outer rims of rings: Ring mounting tabs Type-I cables Cooling pipes (manifolds and cables not shown on drawing) 9mm at inner rim of rings: bus tape connections to modules & EoS cards. >≈7mm radial space needed ≈2mm clearance NB these tabs are actuallly wider than shown – occupy ~ entire space in phi 29/06/ ITk CERN J.Pater - Endcap Rings Status
4
Half Rings : Overview Gli half ring sono sandwich di fibra di carbonio e carbon-foam con in mezzo circuiti elettrici e un tubo di raffreddamento (Ti). Tre tipi di half rings a seconda dello strato. 54 half rings nel rivelatore.
5
Half Rings : Overview
6
Half Rings Construction Steps: Overview
NUMBERS in ONE end cqp Endcap z [cm] R_min [cm] R_max [cm] Number of modules per ring Modules per HR plate [? tbc] Number of disks in z Modules per layer D2 300 15.20 19.20 32 8 10 320 D3 21.15 25.15 44 11 352 D4 27.10 31.10 52 13 9 468 Total HR 1140 ~1.75 m2 x EC
7
Half Rings Construction Steps: Overview
Cut of Carbon Foam blocks in 3mm height trapezoidal slices Lay-up of 3 prepreg Layers and rough (large) cut Lay-up of prepreg lay-up and carbon foam slices Co-curing of the lay-up Machining of the half sandwich Gluing of tapes on each half sandwich Gluing of peek supports, Ti pipe and half sandwiches together
8
Half Rings Construction Steps: C slices
Carbon Foam (Allcomp k9, density 220 kg/m3) is delivered in blocks ~ 30x30x2.5 cm3 first step is to produce 3 mm thin slices of trapezoidal shape with at least one side with planarity < um. In one end cap ~650 slices
9
Half Rings Construction Steps: Compositi
108 half sandwiches in one endcap. In the composite lab, three prepreg layers are overlaid 0/90/0 and cut. Each layer is FIBER K13C2U and RESYN EX1515. Total THICKNESS mm. the shape is significantly larger than the final half ring at this first stage. Pantograph
10
Half Rings Construction Steps: Compositi
The prepreg skin (1) is overlaid with the carbon foam trapezoidal slices (2) and put in a vacuum bag (3). 1 2 3
11
Half Rings Construction Steps: Compositi
The vacuum bag is then placed in the autoclave for ~ 3hours co-curing
12
Half Rings Construction Steps: Machining
Dopo la cottura il composito viene rifinito a forma di corona circolare e la parte interna di foam e’ lavorata per ottenere spazi per tubo, supporti in peek e bus. Fresatura per rifinire i contorni (qui non fatta) e per alloggi tape, supporti, pipe.
13
Timeline HR R&D and preproduction HR production and QA
14
Spare
15
High Luminosity LHC 2012 (data): 2010 (data): 2027 (simulazione):
~15 cm 2012 (data): 25 vertici per evento 2010 (data): 2 vertici per evento 2027 (simulazione): 200 vertici per evento 15
16
Layout del nuovo tracciatore - ITk
STRIP Strip General ITk Pixel Attuale HL_LHC Superficie Pixel [m2] 1.9 ~14
Presentazioni simili
© 2024 SlidePlayer.it Inc.
All rights reserved.