Protection Database Tool First meeting at CERN to discuss the project progress, 16th March 2017 Protection Database Tool Timo Tarhasaari ja Tiina Salmi Acknowledgement: Susana Izquierdo Bermudez and Hugo Bajas (CERN)

Overiew Goals Database design Demos (example with MXFS03)

Goals Part of the FCC-TUT-QUENCH-4 project One of the main objectives is to develop an Excel database tool that links magnet parameters with test results Easy extraction of test results and related magnet parameters Useful for simulations and studies such as scaling law “Super quench table” and reference for magnet designs WORK UNIT TUT-QUENCH-4 Analyze the experimental results from the quench protection tests of high-field Nb3Sn magnets in order to provide experimental validation to the assumptions for the quench protection of the 16 T magnet designs within the WP5 of the EuroCirCol collaboration.

Database Design Technology based on MS Excel and pivot tables Pivot tables for storing large tables and operation with sets rows Does not need any external software / services Inlcudes two spreadsheets: The database (DB) with its internal structure and stored data (hidden from the user) User interface (UI): Allows user to take actions with database The database manager, which communicates between the user and database is integrated in the macros of the UI

Database internal structure: The shelves in a warehouse Database with data: Boxes on the shelves UI: Loading bridge for bringing taking stuff to the warehouse Manager: Warehouse worker putting boxes on correct shelves and delivering the requested boxes to the loading bridge

Internal structure

Parameters in detail MAGNET PARAMETERS (INPUT) COMPUTED QUANTITIES Magnet ID Unique ID for magnet assembly lmag (m) Magnetic length Apert. (mm) Aperture Inom (A) Nominal current Iult (A) Ultimate design current Top (K) Operation temperature aloadline,bloodline Peak field load line: Bp=a*Ib Ld, fit p1-p6 Fit parameters for diff. inductance vs. current (from ROXIE) Parameters in detail COMPUTED QUANTITIES Ic, Tcs,Bp, Estored and Ld at nominal- and at specific test conditions will be computed internally.

Parameters in detail COIL PARAMETERS (INPUT) COMPUTED QUANTITIES Coil ID Unique ID for each coil Rmeas,RT (Ω)  Measured at room temperature Nlayers  Number of layers composing the coil. Each layer is wound with one cable. Parameters in detail COMPUTED QUANTITIES Coil resistance, Coil Ic at specific test conditions

Parameters in detail LAYER PARAMETERS (INPUT) Layer ID Unique ID Nturns Cable unit length Comp_outerQH_outer Insul. material & thickness QH_outerLayer Comp_innerQH_inner QH_innerLayer Parameters in detail

Parameters in detail CABLE PARAMETERS (INPUT) Cable ID Unique ID for cable Wbare (mm) Cable width, measured before HT hbare, i(mm) Cable height, inner surface, measured before HT hbare, o(mm) Nstrands Number of strands Lp,s (mm) Strand twist-pitch dcable-ins (mm) Cable insulation thickness matcable-ins Cable insulation material Core Description of possible core Strand type Informative description of strand type. dstrand (mm) Strand diameter Cu/Non_Cu Strand Cu-SC ratio Filament twist-pitch length RRR min-max From strand measurement Parameters in detail

Parameters in detail HEATER PARAMETERS (INPUT) COMPUTED QUANTITIES Heater ID ID for a ”heater design” Heater type  Descriction, e.g. Cu-plated straight... Matins  Heater insulation material dins (mm) MatHS  Heating station (HS) material dHS (mm) HS thickness MatLow-R  Low-resistance path material dLow-R (mm)  Low-resistance path thickness lstrip (m)  Strip length wHS (mm)  Strip width at heating station wLow-R (mm) Strip width at low-resistance path lHS (mm) Length of HS LLow-R (mm) Length of low-resistance path lper (mm)  Period of HS for 1 turn NHS / per  Number of HS within 1 period Rmeas (Ohm)  Measured resistance at RT Parameters in detail + a comment box for additional descriptions COMPUTED QUANTITIES Heater resistance.

Parameters in detail JC FIT PARAMETERS (INPUT) Jc fit ID Unique ID relating the fit and parametes to a strand Fit type Fit function, e.g. Godeke, Bordini, Bottura.. P1-p12  Fit parameters. Parameters in detail

Demos of DB use Demo 1: Adding magnet parameters

Demos of DB use Demo 1: Adding magnet parameters

Demos of DB use Demo 1: Adding magnet parameters

Demos of DB use Demo 1: Adding magnet parameters

Demos of DB use Demo 1: Adding magnet parameters

Demos of DB use Demo 2: Adding quench heater test results

Demos of DB use Demo 2: Adding quench heater test results

Demos of DB use Demo 3: Extracting wanted test results from the database

Demo 3: Extracting wanted test results from the database

Quenches can be selected based on various parameters Now select MQXFS03a&b and heaters fired only on OL

Quenches can be selected based on various parameters Now select MQXFS03a&b and heaters fired only on OL

A new workbook is created with quench data on one tab, and magnet parameters in the other

Magnet parameters

Demo 4: Analysis Plotting experimental data for comparison

Simulation with CoDHA will be interfaced to the database. Comparing heater delays with simulation results Simulation with CoDHA will be interfaced to the database.

Comparing current decays In this example MQXFS03a, QI-test with all heaters fired, no dump Simulation with Coodi, using same assumptions than in EuroCirCol Coodi: 26.9 MIITs Meas: 24.4 MIITs Coodi: 25.6 MIITs Meas: 23.3 MIITs