590A Amplifier and Timing Single Channel Analyzer

plastic surgery

When the peak time is equal to2.2τ，0.1% level when the pulse width is equal to the peak time4times, it is semi-Gaussian in all ranges. Bipolar crossover equals1.5τ。

gain range

fromX5ArriveX1250Continuously adjustable.

integral nonlinearity

Use1.5 μsDuring plastic surgery<±0.05％。

noise

Use3 μsWhen unipolar shaping is performed, it is referred to the input terminal<5 μV rms, as well as using1.5 μsWhen shaping, ≤7 μV, both gain ≥100。

temperature instability

Gain ≤±0.0075％/°C，0to50°C。
DC level ≤±50μV/°C，0to50°C。

Count rate stability

⁶⁰Cosource1.33-MeVThe gamma ray peak is at the end of the analyzer range85%, usually offset<0.02% when its input count rate is in use1.5-μsIn the case of plastic surgery, from1000Arrive50,000count/When seconds change, itsFWHMwiden<10%. amplifier at count rates exceeding75,000count/seconds will maintain the baseline reference.

Overload recovery

When using gain, in2.5within a non-overload unipolar pulse width fromX300Overload returns to rated output2Within %; bipolar pulse fromX500Recovery from overload is the same.

baseline restorer (BLR）

A gated active baseline stabilizer with automatic threshold circuitry provides the threshold level as a function of signal noise to the baseline restorer discriminator.

Coarse gain adjustment

A six-position switch selects the amplifier's coarse gain coefficient; the coefficients are10、20、50、100、200and500。

Fine-tune gain

Single turn potentiometer for direct reading, trim gain factor available from0.5Arrive2.5Adjustments are made continuously.

PZ ADJ

Amplifier shaping can be matched to the preamplifier's decay time via front panel screwdriver adjustment; available from30 μsto ∞ to adjust the preamplifier’s decay time. Factory setting is50 μs。

plastic surgery

Three three-digit printed circuit boards (PWB) switch, easily accessible via the side panel to select0.5、1.5and3.0 μsplastic surgery time.

POS/NEG

A front panel toggle switch selects the input circuit for either polarity of the preamplifier input pulses.

UNI-BI

Front panel toggle switch selects unipolar or bipolar output shape.

AMPinput

BNCFront and rear panel connectors accept positive or negative pulses, selected with a front panel toggle switch, with rise times ranging from10to650 ns, the decay time is30 μsto ∞;Z_in =1000 Ω, DC coupled; linear value,2 V;value,20 V。

AMP

front panelBNC，Z_o <1Ω. With short circuit protection function;0to+10 VFull-scale linear range in time; active filter shaping and DC recovery for unipolar output; DC levels0to±5 mV。

rear panel standardORTECpower connector;Amphenol 17-10090or equivalent, with all standardsORTECPairing of onboard and offboard power cords on the preamplifier.

Enter dynamic range

200:1。

Pulse pair resolution time

The shaping time is0.5 μsWhen, the minimum pulse pair resolution time ≤2 μs。

Output timing

After the amplifier output pulse peak ≅500 ns。

Time offset and pulse height (swimming)

in0.5 μsUnder shaping time, for50:1The output amplitude changes, swimming<±10 ns。

Threshold Temperature Instability

≤± of full scale0.01％/°C（1 mV/°C）。0to50°C, useNIM Aclass power supply (reference-12 V）。

Non-linearity of the discriminator

≤ ± of the full scale (integral) of both discriminators0.25％。

Window width invariance

in0to10 VWithin the linear range of the change<full scale window width0.1％。

Minimum input threshold

For low-level discriminators,50 mV。

EXT LLD

When the low-level reference mode switch mounted on the rear panel isExtWhen up, the rear panelBNCThe connector accepts low-level bias (the0to-10 Vinput corresponds to the low-level discriminator setting0to+10 Vsignals within the range). Input impedance2000 Ω。

low level

front panel10coil potentiometer, from0Arrive+10 VAdjustable; when the rear panelLL RefThe mode switch is set toIntWhen , the threshold of the low-level discriminator can be set. When the rear panelLL RefThe mode switch is inExtposition, this control has no effect.

window

on the front panel10turn precision potentiometer for adjusting analyzer window width (selected by internal jumpers0to10 Vor0to1 V. Factory setting is0to10 V）。

INT/window

Front panel toggle switch selects operating mode.
• window LLSet the baseline level (0Arrive10 V), the window control sets the window width to0Arrive1 Vor0Arrive10 Vbetween.
• Int PointsLLSet individual discriminator thresholds (0Arrive10 V), the window controls are disabled.

Low level reference

A rear panel-mounted toggle switch selects the source of low-level bias.IntPosition selection front panel controls;ExtSelect low-level bias via the rear panel connector.

SCA

Internally connected to amplifier output; impedance is1000 Ω。

EXT LLD

0to-10 Vinput,2000 Ω input impedance; rear panel connector.

SCA OUT

Front and rear panelsBNCConnectors are provided with nominal+5 V, width500 nsofNIMstandard output; usually50Ω output impedance.

DISC OUT

rear panelBNCConnectors are provided with nominal+5 V, width500 nsofNIMstandard output; usually50Ω output impedance. The output occurs when the leading edge of the linear input crosses the window threshold.

Required power supply

+24 V, 35 mA; –24 V, 25 mA; +12 V, 115 mA; –12 V, 85 mA。

weight

Net weight 1.3Kilogram (3.0pounds). Shipping weight 2.25Kilogram (5.0pounds).

Size

single widthNIMStandard module3.43 X 22.13cm (1.35 X 8.714inches), consistent withDOE/ER-0457Trequirements.

Model

Description

590A

Amplifier and Timing Single Channel Analyzer