1. 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)

2. Overiew
Goals
Database design
Demos (example with MXFS03)

3. 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.

4. 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

5. 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

6. Internal structure

7. 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.

8. 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

9. 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

10. 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

11. 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.

12. 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

13. Demos of DB use
Demo 1: Adding magnet parameters

14. Demos of DB use
Demo 1: Adding magnet parameters

15. Demos of DB use
Demo 1: Adding magnet parameters

16. Demos of DB use
Demo 1: Adding magnet parameters

17. Demos of DB use
Demo 1: Adding magnet parameters

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

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

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

21. Demo 3: Extracting wanted test results from the database

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

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

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

25. Magnet parameters

26. Demo 4: Analysis
Plotting experimental data for comparison

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

28. 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