ProtoDUNE Single Phase Beam Plug Nitrogen Gas System Installation Tim Loew Lawrence Berkeley Lab January 12, 2017
Introduction • Gas System Overview and Installation Timeline • Phase I – Install and secure external gas system components to roof and secure through feedthrough. • Phase II – Mount Beam Plug into End Wall Field Cage and Install in Cryostat. • Phase III – Uncoil and connect external gas line to Beam Plug mounted inside the Cryostat. 2
Beam Plug Nitrogen System (External) Located adjacent to walkway Locally Accessible Control Panel BL BR Beam Nitrogen Line Window Feedthrough Pipe into Detector Interior TCO 3
Beam Plug Nitrogen System (Internal) N 2 gas from/to Local Control Nitrogen Line Control Panel Panel Connection End Wall Field Cage Mounted Beam Plug End Wall Field Cage 4
Phase I-III Installation Sequences Phase II (Prior To Step 5A) B A Phase I Phase I beam Beam Plug Phase II Phase II Phase III Phase III (Prior To Step 12B) Phase III Phase III Beam Plug Phase II Phase I beam 1/2017 8/2017 9/2017 12/2017 11/2017 Graphics Source: Gina Rameika. Note: Phase timing shown approximate. 5
Phase I (Exterior): August/September 2017 • Install external NitrogenGas System components and Local Control Panel on roof. Local Control • Secure Nitrogen Line through the Panel Feedthrough Pipe flange. • EHN1 Services Needed: Valve Cluster AC Power House Nitrogen Line with a single custom fit section. No purity N 2 Vent requirements. Low moisture Local Control content preferred. Panel • Slow Control Sensors (mV readout) : Valve Cluster Temperature RTD (2X) Pressure (2X) Dielectric Break EHN1 N 2 to N 2 in BP 6
Phase I (Interior): August/September 2017 N 2 gas from/to N 2 Line feedthrough Control Panel from/to Control • Nitrogen Line temporarily Panel above coiled and supported by a Runway Beam until Beam C is in its final configuration. • Nitrogen Line leak tested. • Clean Electrical Grounding Until Phase III, the with Dielectric Break verified. N 2 Line is coiled, secured and stowed • System installation and testing duration: 1 ‐ 2 weeks Runway Beam 7
Phase II : November/December 2017 • Beam Plug installed into End Wall Field Cage in Clean Room outside Beam Plug Mockup of cryostat. • Beam Plug and End Wall Field Cage inserted into Detector together during Step 5A (slide 5) . End Wall Field Cage Detector Staging Clean Room End Wall Field Cage with Beam Plug Mockup at Ash River Trial Assembly 8
Phase III : December 2017 • Beam Plug and End Wall Field Cage in position inside the detector. • Scissor Lift is used to access EHN1 SP Cryostat Floor to Ceiling Beam Plug location before north Work Platform drift End Wall Field Cages are in their final configuration. Lift Platform location Scissor Lift Coiled N2 Line from Phase 1 Beam Plug Scissor Lift at Ash River Trial Assembly Image: Gina Rameika 9
Phase III : December 2017 Secure N 2 Line Connection Point (CAD) • Nitrogen Line is uncoiled and connected to the Beam Plug via metal seal Conflat flange. N 2 gas from/to Control Panel Secure N 2 Line Connection Point (mockup) N 2 gas from/to Control Panel Phase III ‐ type of view from Ash River. (Will be within arms reach at EHN1.) N 2 gas to/from Beam Plug 10
Conclusion • Gas System Overview and Installation Timeline • Phase I – Install and secure external gas system components to roof and secure through feedthrough. • Phase II – Mount Beam Plug into End Wall Field Cage and Install in Cryostat. • Phase III – Uncoil and connect external gas line to Beam Plug mounted inside the Cryostat. 11
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