LHO Quad SmCo 10x10 magnet measurements

Document #:

LIGO-T1000676-v1

Document type:

T - Technical notes

Abstract:

73 of the received Quad SmCo 10x10 magnets were measured for strength using an FW Bell 5180 and a custom TFE magnet holder built by Gary Traylor to hold a 10mm x 10mm magnet.

The numbers:
Travis measured the magnets from both ends, recording both a + and a - value for each magnet. The batches are simply the stacks of arbitrary size made during the measuring process.
Magnets were measured post-bake.
The numbers are in kGauss.

Files in Document:

• Magnet_Strength_LHO_SmCO10x10.pdf (41.9 kB)
• Magnet_Strength_LHO_SmCO10x10.xlsx (10.8 kB)

Other Files:

• T1000676-v1_with_calcs.xlsx (13.4 kB)

Topics:

• Suspensions

Authors:

• Travis Sadecki

Keywords:

magnet strength SmCo

Notes and Changes:

The file "T1000676-v1_with_calcs", added by Norna, shows the max, min and average values and the spread (max-min)/average. For this sample the spread is 5.2%.

Referenced by:

• LIGO-T1000669-v2: LHO BS/FM NdFeB Nickel Plated magnet measurements
• LIGO-M0900034-v4: RODA: Use of SmCo and NdFeB Magnets in Advanced LIGO Suspensions