R. Lane, A. Ramirez

Testing ITMY (QUAD 2)
Took the Top Mass OSEM Coil Resistances, Photo Diode Voltages, and LED Voltages today. Took measurements at the connection between the octopus cables (D1000234) and the top mass extension cable. The OSEMS meet the requirements.*

Coil Resistances: 39±1Ω
PD Voltages: 1.01±0.05V
LED Voltages: 0.53±0.05V

	Main Chain
OSEM	S/N	Cable	Coil(Ω)	LED(V)	PD(V)
Face 1	481	695	36.3    1.017	0.554
Face 2	638	695	36.0    1.018	0.551
Face 3	501	695	36.4    1.018	0.558
Left	496	695	36.0    1.017	0.551
Right	499	698	36.5    1.018	0.558
Side	445	698	36.7    1.017	0.558

Reaction Chain
OSEM	S/N	Cable	Coil(Ω)	LED(V)	PD(V)
Face 1  471	698	35.9	1.018	0.553
Face 2  484	698	36.4	1.018	0.554
Face 3  472	707	36.9	1.016	0.554
Left    630	707	36.8	1.017	0.562
Right   466	707	36.7	1.019	0.558
Side    415	707	36.0	1.018	0.559

*The requirement for the coil resistance to be 39±1Ω was defined at LLO using "extra long" non final cables. This requirement is not sufficient to determine if the resistance is within standard. I will inquire with the correct authorities to determine what the new value should be for the in-vacuum final cables. However, they do meet the tolerance of ±1Ω. We took the measurement at the octopus cable, not at the vacuum feed through simulator as specified. We did not have the cables available. Although this should not add more than a few tenths of an ohm to the final resistance and would not make up the difference.