Report from the SURF Integration and Installation Workshop Marco Verzocchi - Fermilab Cold Electronics Consortium Meeting 5 November 2019
Workshop(s) at SURF • Mon 29 to Wed 31 Oct - DUNE Installation and Integration • Thu 1 and Fri 2 Nov - DUNE/LBNF Interfaces (did not attend) • Included a visit to the mine • Most slides in the following stolen from Marzio Nessi’s summary 5 Nov 2018 M. Verzocchi | Report from the SURF Workshop
Main topic of discussion • Shall we perform the cold test of the APAs (after integration with Cold Electronics and Photon Detector) on the surface at the Integration and Test Facility or in the clean room outside the cryostat at SURF ? YES - Main advantage • Test performed at SURF after routing cables through the APA frames, with two stacked APAs • As soon as the test is completed move the APAs inside the cryostat - Problems • Not a lot of space inside the clean room outside the cryostat (worse for 3 rd detector to be installed) • How the hell do we get the LN 2 required to operate the cold box in the mine ? The installation of the cryogenic lines from the surface to the DUNE cavern is foreseen for later in the project 5 Nov 2018 M. Verzocchi | Report from the SURF Workshop
What Happens at the ITF • APA wire tension measurement • Testing and installation of photon detectors • Testing and installation of Cold Electronics boxes - Reception test of FEMBs (warm) - Install FEMBs onto the APAs - Warm test of FEMBs after installation (check connectivity) with local readout - Installation of cable conduit in the APA frames - Cold box testing of a fraction of integrated APAs 5 Nov 2018 M. Verzocchi | Report from the SURF Workshop
What Happens in the Cavern • Attach of upper and lower APAs (not in the clean room) with connectivity test for the photon detectors • APA pair moved into the clean room, installation of Cold Electronics cables including their routing through the APA frames • APA pair moved into the cold box, CE cables connected to patch panel inside the cold box • Warm test, followed by cold test • APAs moved into the cryostat 5 Nov 2018 M. Verzocchi | Report from the SURF Workshop
New Layout of the Top of the Cryostat monorails ~20T bridge crane ~12T detector mezzanine cable trays to CUC 5 Nov 2018 M. Verzocchi | Report from the SURF Workshop
New Layout of the Top of the Cryostat 5 Nov 2018 M. Verzocchi | Report from the SURF Workshop
New Layout of the Top of the Cryostat • Work to be done by Cold Electronics consortium • Need to finalize the routing of all cables/fibers to CUC • Understand cooling requirements for the power racks • Dimitar and Jack to provide a new set of integrated models with as much details as possible • Additional work required on the facility side (move pipes internally, mirror cryostat design, understand how we get the LN 2 for the cold boxes) • Cryostat penetrations need to be installed as soon as the iron structure of the cryostat is complete (advance procurement in the schedule) 5 Nov 2018 M. Verzocchi | Report from the SURF Workshop
Logistics and Databases • All the logistics involved with transport of parts for the cryostat and the detector is not yet fully understood • Logistic coordinator for LBNF and DUNE has just started working, need to understand and accommodate also our needs (we may not ship containers, we may ship a lot of small boxes too) • Role of databases still needs to be fully sorted out - Cannot just think of part breakdown structure, calibration during QC, and logistic, need to have full view of database requirements throughout entire life of experiment, well understood list of requirements, before choosing database structure 5 Nov 2018 M. Verzocchi | Report from the SURF Workshop
Dust in the Cryostat • Long discussion about the amount of dust that can be collected inside the cryostat (and its activity) • Requirements: - Feed clean air from the surface into the cryostat through the manholes - All other feedthroughs to be closed as soon as possible - No special flanges (too expensive) • Cryostat penetrations need to be available early in the project, so that we can use them to seal the cryostat • For cable routing reopen one penetration at a time, install clean tent around the area that is open 5 Nov 2018 M. Verzocchi | Report from the SURF Workshop
Clean Room • The following slides are taken from Bill Miller’s presentation(s) • Bill has a detailed plan for the work that takes place in the cavern that meets our requirements • The main problem is that in the current design the CPA assembly tower location interferes with opening / closing the cold boxes • For the 3 rd detector the space is even tighter (SAS moved on the top of the bridge) • Some work still needed to demonstrate that we can assemble and install the detector on the timescale of 8-9 months 5 Nov 2018 M. Verzocchi | Report from the SURF Workshop
New Layout of #1 Cleanroom and SASs Materials SAS Clean Room Personnel SAS Materials SAS Top View with roof framing October 30, 2018 5 Nov 2018 M. Verzocchi | Report from the SURF Workshop
Access #1 • Since occupancy is less that 50 FTE/shift access is via one permanent stairway. A second temporary one can be located on the east end of Cavern #1 • Permanent stairs are located outside the cleanroom and stairs next to the bridge in the “dirty” area • APA access is thru a removable panel in the roof • Personnel access is via man-door into the personnel SAS, a second emergency man- Materials door exit could be at the bottom of the stairs Handling • Fork-lift access is thru doors located in SAS Materials Handling SAS Man-door into Personnel SAS 5 Nov 2018 M. Verzocchi | Report from the SURF Workshop
Materials Handling Access from Ross Shaft • Materials Access for Detector #1 and #3 are shown in Red • Access to Detector #2 and #4 are shown in Blue ALL materials are moved by SURF from the headframe area to detector halls or a location to be determined Delivery schedule is controlled and managed by SURF, carefully logistics management is required during ALL phases of DUNE A ~1 week DUNE materials buffer underground will help 5 Nov 2018 M. Verzocchi | Report from the SURF Workshop
Materials Handling SAS • The Materials SAS has several important features - Easily removable roof section - APA pairs are completely covered except for access to pick points - Assembly Tower allows stair access to make connections in the middle and the top access to the other side is via scissor lift - Sliding barn door (or similar) for APA pair access to cleanroom - CPA boxes moved into SAS and moved via cleanroom fork lift into cleanroom If needed this could be a separate corridor to keep APA area cleaner 5 Nov 2018 M. Verzocchi | Report from the SURF Workshop
APA Assembly stations Detector #1 • To meet the installation schedule of 3 APAs and 2 CPA pairs per week at the full rate we have 2 APA assembly towers and 1 CPA assembly tower • Assembly Tower 1-APA - This is where the 2 single APAs are loaded onto the assembly tower using the cavern bridge crane - The two APAs are joined after PD testing and rolled into cleanroom • Assembly Tower 2-APA - Has 2 work stations designed for cabling and testing APA pairs-Repair spot for failed APAs coming out of cold box • Assembly Tower 3-CPA (APA?) - Uses hoist on shuttle beam/crane to move CPA components in place - Tower could be designed to hold APA if needed 5 Nov 2018 M. Verzocchi | Report from the SURF Workshop
Cold Box & Stair Design Features Personnel SAS In this layout the While the Cold Box has not been egress stairs are now designed yet one of the key features part of the personnel is that they can move to the area SAS between the cryogenic pumps 5 Nov 2018 M. Verzocchi | Report from the SURF Workshop
Installation Rate Dec #3 • This is similar to the old version 7 installation plan • While we were able to add a 3 rd work station to the APA assembly tower 3.5m the Toaster Area is very congested. • In theory you could assume roughly the same rate but there is so little work space you may have to do CPA and APA work more linear. It is not clear there is room for 20 FTE/shift. Best guess would be ~25% slower See talk on Detector #3 installation 5 Nov 2018 M. Verzocchi | Report from the SURF Workshop
What else is New ? • Work inside the cavern now happens on a 2 shifts daily through the entire week • The Cold Electronics group needs to provide the personnel for the Friday/Saturday/Sunday shifts (that’s when the testing in the cold boxes takes place) • This means that the CE personnel needs to go through the full training (1 week) for underground guides • Plan for deployment of CPAs to be revisited - The original plan was to deploy CPAs on a row by row basis - Now moving to deploy (even install) CPAs at a later date, allows for more testing (repairs ?) of APAs in place 5 Nov 2018 M. Verzocchi | Report from the SURF Workshop
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