Wire Rope Mounts Specification Peter Sutcliffe University of

Wire Rope Mounts Specification Peter Sutcliffe University of Liverpool 5 th March 2020

Anti Vibration mount Enquiry for the APA Transport Frame for the DUNE Experiment, South Dakota Peter Sutcliffe University of Liverpool 21 st August 2019 Sent to AVM(R) 21 st August 2019

Requirements • Two steel APAs (Anode Plane Array) are need to be transported from Daresbury, Cheshire, to South Dakota, using various transport systems. In addition, the structure will be turned by 90° in order to go down a mineshaft 1 mile underground. • A system of Cavoflex anti vibration mounts will be needed in order to protect the APAs during transport. These are shown in the attached slides. • This is a preliminary enquiry, in order to establish what size of wire rope mount can be used. • There is a general requirement for the APA structure that it will not see any more than 4 g in any direction. Transport frame with protective panels. 3 28 December 2021 APA Transport Frame wire rope mounts spec.

APA Transport Frame Description • The Transport frame comprises of: (Quantities are per transport frame assembly) - APA Main steel Frame – 472 Kg – 1 off - APA 474 Kg each – 2 off - APA Mount Support Structure 110 Kg each – 4 off - Aluminium protective frame 90 Kg each – 2 off - Acrylic Panels 130 Kg - Total weight 2170 Kg • For your estimates, it will be the 474 Kg APA frame that will need the wire rope mount protection • Each APA is supported on two mount support structures, comprising 3 wire rope mounts per structure, giving in total 6 wire rope mounts per APA and 12 wire rope mounts for each transport frame assembly. 4 28 December 2021 APA Transport Frame wire rope mounts spec.

Transport frame dimensions 5 28 December 2021 APA Transport Frame wire rope mounts spec.

Transport frame parts Protective panels APA (in covers) Aluminium protective frame Steel Central Frame 6 28 December 2021 APA Transport Frame wire rope mounts spec. Wire rope mount support system

APA in frame details Top view of a pair of APAs in the frame Detail of an APA and mounting system with some APA covers removed 7 28 December 2021 APA Transport Frame wire rope mounts spec.

Wire rope support system Each APA is connected to 2 strut assemblies, each having 3 wire rope mounts 8 28 December 2021 APA Transport Frame wire rope mounts spec.

Proposed wire rope mount type • Wire rope mount in the design is based on a the one in the attached drawing. The most critical dimension is to keep the width to 100 mm or less. I would expect the mating surface to have M 8 or M 10 counterbored holes. 9 28 December 2021 APA Transport Frame wire rope mounts spec.

Transport frame movement • Transport from Daresbury, Cheshire, to Liverpool Docks by road in a wooden crate. - Lifted by crane and fork lift • Transport from Liverpool Docks to the east coast of the USA by sea. - Lifted by crane and fork lift • Transported from the East Coast of the USA to Lead, South Dakota, by road or rail. - Lifted by crane and fork lift • Transported by road to the top of the ‘Ross Mine Shaft’ - Taken out of the wooden crate and placed on a ‘trolley’ • Rotated by 90° and supported under a hanging lift and lowered slowly to around 1 mile underground. - The lift has an emergency break, which means the structures can undergo a force of 2 g if this happens. • Rotated a further 90° so the structure is ‘upside down’ and placed on a trolley. • Moved on a trolley on fairly smooth surfaces to an installation cavern. • Rotated 90° in order to install the equipment into the experiment. 10 Placed on a trolley vertical and moved on a smooth surface to the experiment 28 December 2021 APA Transport Frame wire rope mounts spec.

Transport from Daresbury to South Dakota • Transport from Daresbury, Cheshire, to Liverpool Docks by road in a wooden crate. - Lifted by crane and fork lift • Transport from Liverpool Docks to the east coast of the USA by sea. - Lifted by crane and fork lift • Transported from the East Coast of the USA to Lead, South Dakota, by road or rail. - 11 Lifted by crane and fork lift 28 December 2021 APA Transport Frame wire rope mounts spec.

Taken out of the wooden crate and placed in the ‘Ross’ mineshaft, Lead, South Dakota • Rotated by 90° and supported under a hanging lift and lowered slowly to around 1 mile underground. - The lift has an emergency break, which means the structures can undergo a force of 2 g if this happens. Connected to Shaft cage Rotated 90° Horizontal position 12 28 December 2021 APA Transport Frame wire rope mounts spec. Lowered down the shaft

At the bottom of the shaft Lowered to the bottom of the shaft, approx. 1 mile • Rotated a further 90° so the structure is ‘upside down’ and placed on a trolley. • Moved on a trolley on fairly smooth surfaces to an installation cavern. Horizontal position, upside down Rotated a further 90° 13 28 December 2021 APA Transport Frame wire rope mounts spec.

Installed into the experiment • Rotated 90° in order to install the equipment into the experiment. Placed on a trolley and moved to the experiment - Placed on a trolley vertical and moved on a smooth surface to the experiment Horizontal position, upside down Rotated back 90° 14 28 December 2021 APA Transport Frame wire rope mounts spec.

Follow up from AVM(R) • Suggested the wire rope mounts were positioned horizontally not vertical. 15 28 December 2021 APA Transport Frame wire rope mounts spec.

Basic Enquiry Data 16 28 December 2021 APA Transport Frame wire rope mounts spec.

Recommended wire rope mount 17 28 December 2021 APA Transport Frame wire rope mounts spec.

Further information given by me • Increased APA mass from 475 Kg to 575 Kg due to protective panels • XYZ Clearances - Vertical Top: 59. 5 mm - Vertical Bottom: 72. 2 mm - Horizontal: 65. 4 mm - Side to Side: 51. 5 18 28 December 2021 APA Transport Frame wire rope mounts spec.

Following consultations with Tom Jones, Daresbury • Thomas Jones, Daresbury, was asked to review the AVMs • Suggested using a MIL Standard - MIL-STD-810 H • 7. 6 g 11 ms input in all 3 directions • 46 cm drop - Not achievable with the space constraints available - 4 g peak when exposed to a transit drop of at least 114 mm (which equates to an instantaneous velocity change of 1. 5 m/s) • Dimensional constraints - Vertical Top: 59. 5 mm - Vertical Bottom: 72. 2 mm - Horizontal: 65. 4 mm - Side to Side: 51. 5 • Suggestion that the mounts should be to the MIL standard was considered and understood but this could not be allowed due to restrictions in the space around the frame with regard to the transport frame. 19 28 December 2021 APA Transport Frame wire rope mounts spec.

New suggestion from AVM (R) 17/1/20 • Daniel Laws will be reviewing the AVMs following our discussion • Current data has been suggested from ESA transport of satellites • for road, shock case 10 gx 10 ms (sawtooth) as per ESA standard, that is equal to a velocity pulse of 0, 5 m/s • for railway, shock cases 3 gx 30 ms (half-sine) for vertical and transversal axes (0, 6 m/s), and 5 gx 30 ms (half-sine) for longitudinal axis as per EN 61373 • for sea, to estimate max dynamic displacements of suspended mass are usually considered ship's max rotations due to rough sea (± 22, 5° - both athwartship and fore-and-aft) • The shock loads are less than 1. 5 m/s, but the 10 gx 10 ms is greater than the 7. 6 gx 11 m/s • Trip down the Ross shaft gives the greatest unknown - Does any existing data exist? • Further analysis using the new weights and constraints will be done in the next few weeks 20 28/12/2021 APA Shipping frame FEA

Question to Dan • Why are these side panels 1” thick? This reduces the side clearances 21 28 December 2021 APA Transport Frame wire rope mounts spec.

New clearances with thick panels Vertical Top: 59. 5 mm Vertical Bottom: 66. 4 mm Horizontal: 99 mm (min) Side to Side: 39. 5 22 28 December 2021 APA Transport Frame wire rope mounts spec.

Final information given to AVM(R) • Suggest the drop height be given as 114 mm • Final Drawing of the frame (needs to be given) • Final Clearances • Is the data from Proto. DUNE helpful? Was there an accelerometer on the APA as well as the transport box? • Still waiting for the data from SBND APA transport from Daresbury to Fermilab which had two accelerometers 23 28 December 2021 APA Transport Frame wire rope mounts spec.

What needs to go in the report? • The report will comprise of something similar to this contents page • This should include shock loads on the APA compared to shock loads transmitted on the transport frame. 24 28 December 2021 APA Transport Frame wire rope mounts spec.