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8600 Series VSM Specifications

APPLIED FIELD STRENGTH WITH HIGH FIELD POLE CAPS (±1%)
Gap indices 4 and 6 support non-VSM applications	Sample space	Sample size with option	8604 maximum field —all modes Maximum ramp rate 10 kOe/s (1 T/s)	8607 maximum field —high field mode Maximum ramp rate dependent on ExactGAP setting*	8607 maximum field —high speed mode Maximum ramp rate 10 kOe/s (1 T/s)
ExactGAP™ Index 1	3.5 mm (0.14 in)	N/A	27.6 kOe (2.76 T)	32.6 kOe (3.26 T)	24.0 kOe (2.4 T)
ExactGAP™ Index 2	8 mm (0.31 in)	N/A	25.2 kOe (2.52 T)	30.1 kOe (3.01 T)	21.0 kOe (2.1 T)
ExactGAP™ Index 3	16 mm (0.63 in)	6.4 mm (0.25 in) with SSVT	20.3 kOe (2.03 T)	26.2 kOe (2.62 T)	19.0 kOe (1.9 T)
ExactGAP™ Index 5	24 mm (0.94 in)	6.4 mm (0.25 in) with oven or cryostat	15.5 kOe (1.55 T)	23.1 kOe (2.31 T)	15.0 kOe (1.5 T)
*ExactGap 1 or 2 maximum ramp rate = 5 kOe/s (0.5 T/s); ExactGap 3 maximum ramp rate = 4 kOe/s (0.4 T/s); ExactGap 5 maximum ramp rate = 3 kOe/s (0.3 T/s)

APPLIED FIELD STRENGTH WITH STANDARD POLE CAPS (±1%)
Gap indices 4 and 6 support non-VSM applications	Sample space	Sample size with option	8604 maximum field —all modes Maximum ramp rate 10 kOe/s (1 T/s)	8607 maximum field —high field mode Maximum ramp rate dependent on ExactGAP setting*	8607 maximum field —high speed mode Maximum ramp rate 10 kOe/s (1 T/s)
ExactGAP™ Index 1	3.5 mm (0.14 in)	N/A	26.5 kOe (2.65 T)	31.3 kOe (3.13 T)	23.0 kOe (2.30 T)
ExactGAP™ Index 2	8 mm (0.31 in)	N/A	24.1 kOe (2.41 T)	29.1 kOe (2.91 T)	20.3 kOe (2.03 T)
ExactGAP™ Index 3	16 mm (0.63 in)	6.4 mm (0.25 in) with SSVT	19.6 kOe (1.96 T)	25.5 kOe (2.55 T)	18.5 kOe (1.85 T)
ExactGAP™ Index 5	24 mm (0.94 in)	6.4 mm (0.25 in) with oven or cryostat	15.4 kOe (1.54 T)	22.3 kOe (2.23 T)	14.5 kOe (1.45 T)
*ExactGap 1 or 2 maximum ramp rate = 5 kOe/s (0.5 T/s); ExactGap 3 maximum ramp rate = 4 kOe/s (0.4 T/s); ExactGap 5 maximum ramp rate = 3 kOe/s (0.3 T/s)

MOMENT MEASUREMENT
Noise floor (emu RMS) Room temperature
0.1 s/pt	150 nemu
1 s/pt	60 nemu
10 s/pt	15 nemu
With oven or cryostat option, 10 s/pt	300 nemu
With SSVT option 10 s/pt	90 nemu
With vector coil option	x coils: 90 nemu at ExactGAP 3; y coils: 200 nemu at ExactGAP 3
Dynamic range	25 × 10^-9 to 10³ emu
Moment stability	Better than ±0.05% of full scale/day for fixed coil geometry at constant field and temperature
Reproducibility	Better than ±0.5% of reading, or ±0.1% of full scale, fixed rotation angle and range, with sample replacement
Moment accuracy	Better than 1% of reading ±0.2% of full scale with a geometrically identical test sample and calibrant
Sample mass	0 to 10 g
FIELD MEASUREMENT
Field accuracy	1% of reading or ±0.05% of full scale
Field resolution	1 mOe
Field ramp rate	8604: 10,000 Oe/s 8607: 10,000 Oe/s (in high-speed mode; reduced when in high field mode)
Closed loop field control stability	1 mOe
SAMPLE ROTATION
Setting resolution	0.1°
Setting reproducibility	<1°
Rotation range	Continuous
CERTIFICATIONS
CE	Yes
Application of Council directives	2014/35/EU Low Voltage Directive 2014/30/EU EMC Directive 2011/65/EU RoHS Directive
Standard to which conformity is declared	EN61010-1: 2010 Overvoltage Category II, Pollution Degree 2; EN61326-1: 2013 Class A, Controlled EM Environment; EN55011: 2009 Class A, Controlled EM Environment EN50581: 2012
UTILITIES
Total system cooling water power dissipation (50 or 60 Hz) — see available recirculating chillers	8604: 4250 W 8607: 13400 kW
Note: chiller power specifications listed are for 100% duty cycle. Many common magnet testing applications such as hysteresis loops will not require as much cooling power. Please consult Lake Shore for chiller recommendations for your specific applications.

8600 Series VSM equipment

	8604	8607
VSM head drive	Gen2
VSM frame	V-mag
Control electronics	Model 737
Bipolar magnet power supply	Model 643	Model 648
Maximum output	±35 V/±70 A (2,450 W)	±75 V/±135 A (9.1 kW nominal)
AC line input	200/208 VAC ±10%, 13 A/phase; 220/230 VAC ±10%, 12 A/phase; 380 VAC ±10%, 7 A/phase; 400/415 VAC ±10%, 6.5 A/phase at 50/60 Hz	200 VAC ±5%, 41 A/phase; 208 VAC ±5%, 40 A/phase; 220 VAC ±5%, 38 A/phase; 230 VAC ±5%, 37 A/phase; 380 VAC ±5%, 23 A/phase; 400 VAC ±5%, 21 A/phase; 415 VAC ±5%, 21 A/phase
Cooling water requirements	Tap water or closed cooling system (optional chiller available) +15 °C to +30 °C
Flow rate	5.7 L (1.5 gal)/min minimum	7.6 L (2.0 gal)/min minimum
Pressure drop	10 kPa (1.5 psi) at 5.7 L (1.5 gal)/min minimum for power supply only	159 kPa (23 psi) at 7.6 L (2 gal)/min minimum for power supply and mandatory flow switch
Electromagnet	Model EM-4V	Model EM-7V
Pole diameter	100 mm (4 in)	180 mm (7 in)
Pole cap face diameter	50 mm (2 in)	50 mm (2 in)
Field homogeneity	±0.1% over 1 cm³ (0.4 in³)	±0.1% over 1 cm³ (0.4 in³)
Cooling water requirements	Tap water or closed cooling system (optional chiller available)
Inlet temperature	15 to 25 °C (59 to 77 °F)	15 to 32 °C (59 to 89 °F)
Flow rate	7.6 L (2 gal)/min	11.4 L (3 gal)/min
Pressure drop	200 kPa (30 psi)	220 kPa (32 psi)
Water chiller capacity	2.5 kW (8,530 BTU)/h	5 kW (17,060 BTU)/h
Hall probe	86-0911
Sense coils	Model 86-SC and Model 86-LC
Instrument console	483 mm (19 in) rack

8600 Series VSM option specifications

Model 86-CRYO variable temperature cryostat
With LHe	Temp range	4.2 K (base), 5.5 K to 450 K (control)
	Temp stability	±0.1 K
With LN₂	Temp range	77.6 K (base), 85 K to 450 K (control)
	Temp stability	±0.2 K
Temperature resolution		0.001 K
Cool-down time		5 min (15 min initial cool-down)
Operation method		Continuous flow
LHe liquid usage		<1 L/h when operating >7 K
LN₂ liquid usage		<1 L/h when operating >85 K
Insulation		Vacuum
Sample zone dimensions	Bore size	7.1 mm (0.28 in)
	Outside diameter	22.4 mm (0.88 in)

More information about VSM options

Model 86-OVEN high temperature oven
Temperature range		308 K to 1273 K
Temperature stability		±0.1 K
Temperature resolution		0.001 K
Nominal ramp rate		5 K/min
Insulation		Vacuum plus multiple reflective shields
Sample zone dimensions	Bore size	7.3 mm (0.29 in)
	Outside diameter	19 mm (0.75 in)

More information about VSM options

Model 86-SSVT single stage variable temperature option
Temperature range		78 K (base), 100 K to 950 K (control)
Temperature stability		0.1 K RMS
Temperature resolution		0.001 K
Gasses		LN₂ and nitrogen gas for T<350 K; argon for T>350 K
Cool-down time		40 min from room temp to 100 K
Nominal ramp rate (in the domain)		Up to 8 K/min
Operating method		Continuous flow
LN₂ liquid usage		0.5 L/h >100 K to 350 K
Nitrogen gas usage		~3 L/min 100 K to 350 K
Argon gas usage		~3 L/min
Insulation		Vacuum
Sample zone dimensions	Bore size	7.8 mm (0.31 in)
	Outside diameter	12.7 mm (0.5 in)

More information about VSM options