&lt;title&gt;Fast-position and time-sensitive readout of image intensifiers for single-photon detection&lt;/title&gt;

Jagutzki, O.; Barnstedt, J.; Spillmann, U.; Spielberger, L.; Mergel, V.; Ullmann-Pfleger, K.; Grewing, M.; Schmidt-Boecking, H.

doi:10.1117/12.371099

Cited by 20 publications

(15 citation statements)

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“…Presumably, the intermediate ''ground'' electrode layer also picked up the image charge and thus was not effective as a cross talk shield any more. We have designed a delay-line anode that overcomes these problems [9]. The image charge pick-up electrode pattern is made up by diamonds connected in rows for each dimension, and leading to an external meander delay-line.…”

Section: Delay-line Read-out With the Image Charge Methodsmentioning

confidence: 99%

Position sensitive anodes for MCP read-out using induced charge measurement

Jagutzki

Lapington

Worth

et al. 2002

Nuclear Instruments and Methods in Physics Research Section A:

113

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We investigate the method of an indirect detection of a MCP charge avalanche projected onto a resistive layer (G. Battistoni, et al., Nucl. Instr. and Meth., 202 (1982) 459). If the sheet resistance is favourable one can detect the charge cloud by the capacitive coupling to an anode structure a few millimetres behind the layer. The anode structure can be, for example, a wedge-and-strip electrode pattern (M. Unverzagt, Diplomarbeit, Universit. at Frankfurt 1992, private communication) as it is used for directly collecting the electron avalanche from a MCP.Detection of the induced charge is beneficial in several respects. Firstly, image distortions produced by secondary electron mediated charge redistribution are eliminated. Secondly, the noise component due to quantized charge collection, commonly referred to as partition noise, is not present. In addition, the dielectric substrate can function both as an element of the vacuum enclosure and HV insulator, making the electrical connections easily accessible and the pattern operable at ground potential, independently of detector operating voltages. This technique can be used to simplify the electronic design requirements where varying high voltages are required at the detector input face such as plasma analysers, etc. It also has application in the manufacture of intensifier tubes (J. Barnstedt, M. Grewing, Nucl. Instr. and Meth., these proceedings) where the inclusion of a readout pattern inside the intensifier body with associated electrical feed-throughs can prove problematic.We will present data on the performance of such detection geometries using several types of charge division anode, and discuss the advantages compared with the ''traditional'' charge collecting method. r

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Section: Delay-line Read-out With the Image Charge Methodsmentioning

confidence: 99%

Position sensitive anodes for MCP read-out using induced charge measurement

Jagutzki

Lapington

Worth

et al. 2002

Nuclear Instruments and Methods in Physics Research Section A:

113

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“…Capacitively coupled MCP-PMT anodes have been successfully demonstrated using resistive thick films or semi-conductors [9][10][11][12][13], and MCP-PMTs using them are commercially available [11,16]. Here we demonstrate that a thin metal layer can also transmit the high-frequency components of the fast pulses from an MCP-PMT to an external array of electrodes.…”

Section: Introductionmentioning

confidence: 85%

“…Typical anode patterns include transmission-line micro-strips [6], two-layer crossed delay lines [4,9], and pad arrays [8].…”

Section: Signal Pickup Arraysmentioning

confidence: 99%

Capacitively coupled pickup in MCP-based photodetectors using a conductive metallic anode

Angelico

Seiss

Adams

et al. 2017

Nuclear Instruments and Methods in Physics Research Section A:

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We have designed and tested a robust 20 × 20 cm 2 thin metal film internal anode capacitively coupled to an external array of signal pads or micro-strips for use in fast microchannel plate photodetectors. The internal anode, in this case a 10nm-thick NiCr film deposited on a 96% pure Al 2 O 3 3mm-thick ceramic plate and connected to HV ground, provides the return path for the electron cascade charge. The multi-channel pickup array consists of a printed-circuit card or glass plate with metal signal pickups on one side and the signal ground plane on the other. The pickup can be put in close proximity to the bottom outer surface of the sealed photodetector, with no electrical connections through the photodetector hermetic vacuum package other than a single ground connection to the internal anode. Two pickup patterns were tested using a small commercial MCP-PMT as the signal source: 1) parallel 50Ω 25-cm-long micro-strips with an analog bandwidth of 1.5 GHz, and 2) a 20 × 20 cm 2 array of 2-dimensional square 'pads' with sides of 1.27 cm or 2.54 cm. The rise-time of the fast input pulse is maintained for both pickup patterns. For the pad pattern, we observe 80% of the directly coupled amplitude. For the strip pattern we measure 34% of the directly coupled amplitude on the central strip of a broadened signal. The physical decoupling of the photodetector from the pickup pattern allows easy customization for different applications while maintaining high analog bandwidth.

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“…Therefore, in 1999, we have proposed and patented a method to minimize the changes required to a commercial image intensifier and simultaneously permitting a very flexible design of the read-out electrode [18]. This method, originally proposed by Battistoni et al [19] and extensively used in various applications with gaseous detectors, uses an anode (screen) with a very high surface resistance, which replaces the usual metal-coated phosphor screen of a standard optically read out image intensifier.…”

Section: The Resistive-screen Image Intensifier With Delay-line Read-outmentioning

confidence: 99%

“…strips with few millimetre pitch, for a delay-line read-out. In recent years various read-out techniques using this resistive screen technique for image intensifiers were reported in literature [4,14,18].…”

Section: The Resistive-screen Image Intensifier With Delay-line Read-outmentioning

confidence: 99%

A position- and time-sensitive photon-counting detector with delay- line read-out

Jagutzki¹,

Dangendorf

Lauck

et al. 2007

Optical Sensing Technology and Applications

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We have developed image intensifier tubes with delay-anode read-out for time-and position-sensitive photon counting. The timing precision is better than 1 ns with 1000x1000 pixels position resolution and up to one megacounts/s processing rate. Large format detectors of 40 and 75 mm active diameter with internal helical-wire delay-line anodes have been produced and specified. A different type of 40 and 25 mm tubes with semi-conducting screen for image charge read-out allow for an economic and robust tube design and for placing the read-out anodes outside the sealed housing. Two types of external delay-line anodes, i.e. pick-up electrodes for the image charge, have been tested. We present tests of the detector and anode performance. Due to the low background this technique is well suited for applications with very low light intensity and especially if a precise time tagging for each photon is required. As an example we present the application of scintillator read-out in time-of-flight (TOF) neutron radiography. Further applications so far are Fluorescence Life-time Microscopy (FLIM) and Astronomy.

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<title>Fast-position and time-sensitive readout of image intensifiers for single-photon detection</title>

Cited by 20 publications

References 1 publication

Position sensitive anodes for MCP read-out using induced charge measurement

Position sensitive anodes for MCP read-out using induced charge measurement

Capacitively coupled pickup in MCP-based photodetectors using a conductive metallic anode

A position- and time-sensitive photon-counting detector with delay- line read-out

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