barrel calorimeter support mechanism
DESCRIPTION
Barrel Calorimeter Support Mechanism. Two designs are proposed for review Design1. Individual module (Segment) of the Barrel Calorimeter is placed inside the magnet with the help of a support structure holding the segment inside the magnet - PowerPoint PPT PresentationTRANSCRIPT
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Barrel Calorimeter Support Mechanism
• Two designs are proposed for review
– Design1.
• Individual module (Segment) of the Barrel Calorimeter is placed inside the magnet with the help of a support structure holding the segment inside the magnet
• Secure the Segment at 4 locations along the 4m length with bolts running all the way through the 6” filler plate, the ring-Girder and to the helical coil mounted inside the Aluminum segment of the Barrel
• Place the next segment, secure it with the bolts and repeat the above procedure for all the 46 remaining segments
• A total of 192 bolts are required to hold the 48 individual segments of the Barrel calorimeter(48 bolts at one location to hold the segment)
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Barrel Calorimeter Assembly Procedure Coil 1
Iron-Yoke1
Step1. Coil 1 inserts into the Iron yoke1
Step2. 6 inch Iron plate and the Ring girder is bolted to the yoke
Step3. Similarly all the other 4 Iron-yokes, coils and Ring-Girders are positioned in place
Ring-Girder
Click for the next slide
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Barrel Calorimeter Assembly Procedure
Step1. Coil 1 inserts into the Iron yoke1Step2. 6 inch Iron plate with the Ring girder is bolted to the yoke
Step3. Similarly all the other 3 Iron-yokes, coils and Ring-Girders are positioned in place
Coil 1
Iron-Yoke1
Ring-Girder
6 Inch Plate
Rollers
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Rollers
Iron Yoke
Coil
6 Inch Plate
Ring Girder
Barrel Calorimeter
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48 Threaded Rods holding the 48 Barrel Calorimeter modules
Heli-coil insert in the aluminum plate
Cut To accommodate the vacuum port
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-Design 2
• This design involves assembling the barrel Calorimeter outside the magnet
• Individual modules of the barrel calorimeter are assembled inside the 2cm thk carbon-fiber cylinder supported by a structure
• The upper modules are bolted to the carbon-fiber cylinder
• The cylinder is rolled into the magnet on rollers fixed to the ring-girder
• 10 tones Hilman-rollers are located at three points on the circumference of the ring-girder
• This option of assembling the barrel calorimeter provides us ample amount of time to assemble the barrel in par with the hall construction
• Reduces the labor involved in fixing the 192 threaded rods into the barrel and extending it to the out-side of the filler plate
• 10 threaded rods are installed to hold the cylinder and the Barrel Calorimeter in place once it has been assembled in the magnet
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HELI-COIL INSERT
SUPPORT STRUCTURE HOLDING THE CARBON-FIBER CYC
Carbon-Fiber Cyc
SETUP FOR ASSEMBLING THE BCAL OUTSIDE THE MAGNET
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3 Rollers Bolted to the Ring-girder
R65cmR92.5
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