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Diff30 Gradient properties

Name Diff30
Gradient system part number M81113
Type Diffusion probe
Compatibility with magnet systems SB/WB/SWB
Gradient Direction z
Theoretical gradient sensitivity 30 G/cm/A
300 mT/m/A
0.3 T/m/A
Typical gradient strength @ 40 A > 1140 G/cm
> 11400 mT/m
> 11.4 T/m
Typical gradient strength @ 60 A > 1710 G/cm
> 17100 mT/m
> 17.1 T/m
ID/OD 19/40 mm
Peak-peak deviation from constant gradient in a cylinder of 5 mm diameter and 14 mm length < 2.5 %
Inductance ≅ 180 μH
Resistance ≅ 1.04 Ω
Rise time 10 - 90 % of 40 A, 120V using a GREAT40 amplifier ≤ 300 μs
Cooling water
Maximum current tested 60 A
Maximum pulse length at maximum current 5 ms
Maximum dc current, at different cooling water temperatures, flow rate ≥ 0.5 l/min 6.2 A @ 12 °C
5.3 A @ 25 °C
4.0 A @ 40 °C
Duty cycles with water cooling at 25° C, averaged over 1s. 1.3 % @ 40 A
0.57 % @ 60 A

Diff30 RF properties

Exchangeable coils:  
Single frequency coils, sample diameters 5, 8, 10 mm 1H
or 19F
or 1H to 19F tuneable
or X nuclei above 40 MHz4
Double frequency coils, sample diameters 5, 8 mm, can be built in direct or inverse detection mode 1H channel:
1H
or 19F
or 1H to 19F tuneable1

X channel:
X nuclei above 40 MHz2

Diff30 Temperature properties

Standard coils, sample diameter = 5 mm  
Specified temperature range -40 °C – 80 °C
233 K – 353 K
Safety limit -100 °C – 80 °C
173 K – 353 K
Standard coils, sample diameter >5 mm  
Specified temperature range Ambient temperature, i.e. gradient water cooling temperature
Safety limit -100 °C – 60 °C
173 K – 333 K
Note: Safety limits are only valid, while the cooling water is running at a water temperature between 5 °C and 50 °C  

Diff50 Gradient properties

Name Diff50
Gradient system part number W122305
Type Diffusion probe
Compatibility with magnet systems WB/SWB
Gradient Direction z
Theoretical gradient sensitivity 50 G/cm/A
500 mT/m/A
0.5 T/m/A
Typical gradient strength @ 40 A > 1900 G/cm
> 19000 mT/m/m
> 19 T/m
Typical gradient strength @ 60 A > 2850 G/cm
> 28500 mT/m
> 28.5 T/m
ID/OD 19/72 mm
Peak-peak deviation from constant gradient in a cylinder of 5 mm diameter and 14 mm length < 5 %
Inductance ≅ 540 μH
Resistance ≅ 830 mΩ
Rise time 10 - 90 % of 40 A, 120V using a GREAT40 amplifier ≤ 500 μs
Cooling water
Maximum current tested 60 A
Maximum pulse length at maximum current 5 ms
Maximum dc current, at different cooling water temperatures, flow rate ≥ 0.5 l/min 6 A @ 12 °C
5.1 A @ 25 °C
3.8 A @ 40 °C
Duty cycles with water cooling at 25° C, averaged over 1s. 1.1 % @ 40 A
0.52 % @ 60 A

Diff50 RF properties

Exchangeable coils:  
Single frequency coils, sample diameters 5, 8, 10 mm 1H
or 19F
or 1H to 19F tuneable
or X nuclei above 40 MHz4
Double frequency coils, sample diameters 5, 8 mm, can be built in direct or inverse detection mode 1H channel:
1H
or 19F
or 1H to 19F tuneable1

X channel:
X nuclei above 40 MHz2

Diff50 Temperature properties

Standard coils, sample diameter = 5 mm  
Specified temperature range -40 °C – 80 °C
233 K – 353 K
Safety limit -100 °C – 80 °C
173 K – 353 K
Standard coils, sample diameter >5 mm  
Specified temperature range Ambient temperature, i.e. gradient water cooling temperature
Safety limit -100 °C – 60 °C
173 K – 333 K
Note: Safety limits are only valid, while the cooling water is running at a water temperature between 5 °C and 50 °C  
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