The Microchannel Plate Detector with delay-line anode
The Micro-Channel Plate detector with delay-line anode is a device for single particle/photon counting, giving information on
the position of each particle/photon and its impact time with high precision. It uses an electronic read-out scheme employing
fast timing amplifiers, timing discriminators and digitizers. It operates under ultra-high vacuum and requires high voltage
supplies.
This detector system is modular and com in different sizes and versions.
Typical performance:
position resolution < 0.1mm
overall linearity 0.3mm
rate capability 1MHz
multi-hit dead time 10-20ns
Typical characteristics of MCPs (for DLD40EP, DLD75eT and HEX75 see below)
# of MCPs in stack 2
Outer Diameter: 50/86.6/127mm
Active Diameter: 45/80/120mm
Aspect Ratio L/D 60:1
Thickness 1.5mm
Pore size 25µm
Center-to-center spacing: 32µm
Bias Angle: 8° ± 1°
Open Area Ratio: >50%
for DLD40EP MCP: 40mm OD (>40mm active), L/D 80:1 , 1mm thickness, 13µm pore size, bias angle: 20°, OAR > 70%
for DLD75eT MCP: 86.7mm OD (75mm active), L/D 80:1; 1mm thickness, 13µm pore size, bias angle: 19°, OAR 64%
for HEX75 MCP: 86.7mm OD (75mm active),L/D 40:1; 1mm thickness, 26µm pore size, bias angle: 20°, OAR 70%
The HEX75 uses triple MCP stacks (Z-stacks). Other detectors can also be delivered with triple MCP stacks (option …/Z)
The HEX120 can also be delivered as HEX100 with 114mm OD MCP (105mm active), 26µm pore size, bias angle: 20°, OAR
70%
Typical characteristics of the detector assembly
Height above a mounting Flange: about 100mm (adjustable)
Mounting Diameter: 94/144/196/246mm
Operating Temperature Range: -50 to 70°C
Operating Pressure: < 2 x 10-6mbar
Baking Temperature: 150°C Maximum
Electron Gain @ 2400Volts
*
: 10
7
Minimum
If you have chosen a detector set with central hole, its size in the MCP is usually 6.4mm and the minimum active diameter
9mm.
If you have chosen a different custom detector type, e.g. DLD25, DLD80x100, DLD100, DLD150, or HEX40 please refer
to the separate instructions.
*
For DLD40EP, DLD75eT or /Z options: about 300V higher voltages may be applied.
MCP Delay Line Detector Manual (11.0.1304.1) Page 7 of 83
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