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Barrel Calorimeter Support Mechanism

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

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Barrel Calorimeter Support Mechanism

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  1. 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)

  2. Barrel Calorimeter Assembly Procedure Coil 1 Step1. Coil 1 inserts into the Iron yoke1 Ring-Girder 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 Click for the next slide Iron-Yoke1

  3. Coil 1 Barrel Calorimeter Assembly Procedure Step1. Coil 1 inserts into the Iron yoke1 Step2. 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 6 Inch Plate Rollers Ring-Girder Iron-Yoke1

  4. Coil 6 Inch Plate Barrel Calorimeter Iron Yoke Ring Girder Rollers

  5. Heli-coil insert in the aluminum plate Cut To accommodate the vacuum port 48 Threaded Rods holding the 48 Barrel Calorimeter modules

  6. -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

  7. Carbon-Fiber Cyc HELI-COIL INSERT SUPPORT STRUCTURE HOLDING THE CARBON-FIBER CYC SETUP FOR ASSEMBLING THE BCAL OUTSIDE THE MAGNET

  8. R65cm R92.5 3 Rollers Bolted to the Ring-girder

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