endcap shielding

Download Endcap  Shielding

Post on 22-Feb-2016

23 views

Category:

Documents

0 download

Embed Size (px)

DESCRIPTION

Endcap Shielding. Design Goals Shield the endcap beam pipe so maintenance workers are not irradiated Estimate 2 cm of Pb is sufficient 2.5 tonnes Easy to install workers are not irradiated Protect the beam pipe from maintenance workers and falling objects - PowerPoint PPT Presentation

TRANSCRIPT

Task T: CMS Endcap Muon

Endcap ShieldingDesign GoalsShield the endcap beam pipe so maintenance workers are not irradiatedEstimate 2 cm of Pb is sufficient 2.5 tonnesEasy to install workers are not irradiatedProtect the beam pipe from maintenance workers and falling objectsDo not interfere with maintenance work on the chambers etc.StatusConceptual design beginning detailed drawingsPropose for Pb-free installation in LS1 (no beam pipe!)Dick Loveless EMU Operations mtg 18 January 2012 #

2500 KG of lead only1290 kg estimated totalLength and weight comparison of YE1-YE2 shielding and YE2-YE3 shieldingThis view represents length but not shape of shieldingYE1 closed and YE2 at 3.05m Physical gap is 2556mmYE2 at 3.9m and YE3 at 7.64m (delta 3740) Physical gap is 3673mmDick Loveless EMU Operations mtg 18 January 2012 #

YE1/2 shielding assembly extended with clam shells openDick Loveless EMU Operations mtg 18 January 2012 #

YE1/2 shielding assembly extended with clam shells closedDick Loveless EMU Operations mtg 18 January 2012 #

YE1/2 shielding assembly retracted with clam shells openLead half cylindersDick Loveless EMU Operations mtg 18 January 2012 #

Step 1 shielding assembly is lowered into guide pinsEstimated lead weight is 1000kgGuide pinsME3ME2Dick Loveless EMU Operations mtg 18 January 2012 #

Mounting and guidance conceptGuide rods extend out 200mm from the spacer ringPermanent shielding mounts provide horizontal surface for feet to restDick Loveless EMU Operations mtg 18 January 2012 #

Mounting of guide rodQuick release pin inserted hereFlange on pinrodDick Loveless EMU Operations mtg 18 January 2012 #

Step 2 Assembly is lowered until it is low enough for extension into the spacer ringsDick Loveless EMU Operations mtg 18 January 2012 #

Step 3 assembly is extended into the spacer rings and the load is transferred from the crane to the spacer ringsDick Loveless EMU Operations mtg 18 January 2012 #

Step 4 Clam shell is closed around the beam pipeDick Loveless EMU Operations mtg 18 January 2012 #

Step 5 feet are securedLips to constrain locationDick Loveless EMU Operations mtg 18 January 2012 #

Draft model of YE2/3 assembly in gap20mm of lead weighs 3600 kgDick Loveless EMU Operations mtg 18 January 2012 #

Side view of ye2/3 assemblyDick Loveless EMU Operations mtg 18 January 2012 #

End view of shielding assemblyShielding clam shells in the open positionDick Loveless EMU Operations mtg 18 January 2012 #

End view of ye2/3 shielding assyDick Loveless EMU Operations mtg 18 January 2012 #

Assembly without motor drive actuators. Uses crane to lower clam shell halves after the frame sets down. Dick Loveless EMU Operations mtg 18 January 2012 #