Surface concept Pickup-tof User manual

PickUp-ToF - Manual

Time-of-Flight Microscope

PickUp-ToF

(Release R001)

Manual

PickUp-ToF - Manual

reproduced without the prior permission of

Surface Concept GmbH.

Surface Concept GmbH

Am S gewerk 23a

55124 Mainz

Germany

Tel. ++49 6131 627160

Fax: ++49 6131 6271629

www.surface-concept.com,

[email protected]

User manual for the PickUp-ToF Release 001).

Manual Version: 1.0

Printed on: 10.10.2019

PickUp-ToF - Manual

1 Table of Contents

1 Table of Contents.............................................................................................................................................................................................3

2 Introduction.........................................................................................................................................................................................................4

2.1 General Information.................................................................................................................................................................................4

2.2 Safety Instructions...................................................................................................................................................................................4

2.3 General Overview......................................................................................................................................................................................5

3 Installation...........................................................................................................................................................................................................6

3.1 Initial Inspection.........................................................................................................................................................................................6

3.2 Installation.....................................................................................................................................................................................................6

3.2.1 Mounting the PickUp-ToF............................................................................................................................................................6

3.2.2 Cabling and High Voltage............................................................................................................................................................7

3.2.3 Software Interface and Installation........................................................................................................................................9

4 Device Layout & Operation......................................................................................................................................................................10

4.1 PickUp-ToF – Operation Voltages.................................................................................................................................................10

4.2 PickUp-ToF – Schematic Lens Setup and Trajectory Simulation.................................................................................10

4.3 PickUp-ToF – Connection Ports.....................................................................................................................................................11

5 List of Figure...................................................................................................................................................................................................13

PickUp-ToF - Manual

Introduction

.1 General Information

This manual is intended to assist users in the installation, operation and maintenance of Release Version 001

of the Surface Concept Time-of-Flight Microscope PickUp-ToF. It is divided into 5 chapters.

. Safety Instructions

Please read this manual carefully before performing any electrical or electronic operations and strictly follow

the safety rules given within this manual.

The following symbols appear throughout the manual:

The “note symbol” marks text passages that contain important information/hints

about the operation of the device. Follow this information to ensure a proper operation

of the device.

The “caution symbol” marks warnings, which are given to prevent an accidentally

damaging of the device. Do NOT ignore these warnings and follow them strictly.

Otherwise no guarantee is given for arose damages.

The “high voltage symbol” marks warnings, given in context with the description of the

operation/use of high voltage supplies and/or high voltage carrying parts.

Hazardous voltages are present that can cause serious or fatal injuries. Therefore only

persons with the appropriate training are allowed to carry out the installation,

adjustment and repair work.

PickUp-ToF - Manual

.3 General Overview

The Surface Concept PickUp-ToF is a compact bold-on Time of Flight Microscope on a CF100 mounting

flange. It can be equipped with different types of detectors to cope with a large variety of applications (e.g.

MCP based detectors with metal anode for counting and time resolved spectroscopy or delayline detectors

for time resolved spatial resolved imaging).

PickUp-ToF - Manual

3 Installation

3.1 Initial Inspection

Visual inspection of the system is required to ensure that no damage has occurred during shipping. If there

are any signs of damage, please contact SURFACE CONCEPT immediately. Please check the delivery

according to the packing list (see Table 1) for completeness.

1x PickUp-ToF R001 (delivered under vacuum)

1x Filterbox with 12pin plug and 8m cabling for HV supply of electrostatic elements of the PickUp-ToF

2x SHV cables for detector supply (8m)

1x BNC cable for interlock connection (8m)

1x BNC noise filter element

1x Resistor connector

Table 1: Packing list for the PickUp-ToF R001

3. Installation

3. .1 Mounting the PickUp-ToF

The PickUp-ToF is transported under vacuum. Proceed as follows, to install it into your vacuum chamber:

Vent the transport container carefully with N2.

Release the M8 screws of the vacuum container and pull out the PickUp-ToF carefully.

The electrostatic elements as well as the microchannel plates of the MCP detector

should be protected from exposure to particle contamination. Particles that stick to the

MCP plates of the detector can be removed by using a single-hair brush carefully and/or

with dry nitrogen. Reading the instructions “microchannel plates” in the detector

manual is strongly recommended.

Install the PickUp-ToF into your vacuum chamber.

PickUp-ToF - Manual

Keep the vacuum container in case that the PickUp-Tof or the detector must be sent back for repair.

It can also be used to store the PickUp-ToF or the detector when not installed in a vacuum chamber.

The PickUp-ToF should be kept under vacuum all the time.

The best long term storage environment is an oil free vacuum in the 1E- mbar range or

better.

The transport container is not designed for a long term storage of the detector. A

storage time of one month should not be exceeded.

The transport housing should be evacuated regularly with a period of at least one

month, in case that the transport housing must be used for a longer storage time.

3. . Cabling and High Voltage

The general connection schema of the PickUp-ToF including its readout package is shown in Figure 1.

PickUp-ToF - Manual

Figure 1: Connection schema of the PickUp-ToF, its detector and its readout and supply package

Finish the complete cabling before switching on the devices and switch off all devices first

before performing any changes to the cabling.

Plug the 12pin filterbox to the 12pin feedthrough of the PickUp-ToF.

Connect the 8 SHV cables of the filterbox to the 19” HVPS. The single HV outputs as well as the

cables are marked correspondingly. Respect the correct assignment of the cables to the 19” HVPS.

Use the 8m BNC cable to connect the BNC “Interlock” socket of the filterbox with the BNC “Interlock”

socket of the 19” HVPS. Alternatively one can connect the BNC termination plug to the BNC

“Interlock” socket of the 19” HVPS and skip the 8m BNC cable. In this case the BNC “Interlock”

socket of the filterbox can be left open.

The interlock connection between filterbox and HVPS blocks the switching on of the HVPS

as long as the filterbox is not connected to the 1 pin feedthrough.

The BNC termination plug can be used to bridge this security element, allowing to switch

on the HVPS even without the filterbox connected.

There is a CF40 flange with 2 SHV feedthroughs for high voltage supply of the detector and 1 BNC

feedthrough for signal readout (named “MCP-F”, “MCP-B” and “SIG”).

PickUp-ToF - Manual

Connect the 10MOhs resistor connector to the SHV feedthrough “MCP-F” first and then connect its

end to the “MCP-F” socket of the 19” HVPS (using one of the two 8m SHV cables).

Connect the SHV feedthrough “MCP-B” to the “MCP-B” socket of the 19” HVPS (using the other 8m

SHV cable).

Connect the small BNC noise filter element to the BNC feedthrough “SIG” first and then connect its

end to the input of the CFD using the short BNC cable.

Connect the output of the CFD to the TDC.

Connect the power cable to the main connector of the 19” HVPS and the TDC and use the USB

cable to connect the TDC to the PC. Do not use PC front panel USB connectors; they are often

restricted in performance.

Terminate the “HV Ref IN” socket of the 19” HVPS with the SHV termination plug (part of the

delivery).

The ““HV Ref IN” socket can also be used to apply a reference voltage to the detector operation

voltage later on.

 See the manual for the high voltage power supply for more detailed information.

In cases that no reference voltage is applied to the HV Ref IN connector of the 19” HVPS, the

termination plug must be used to ground this potential. Otherwise this HV module is not

functioning as the reference potential is missing.

The exact operation voltage of the detector is given in the specification sheet. It is given in

reference to the

“

MCP-F” potential (which corresponds to the HV Ref IN potential).

See the manuals for the detector, the CFD, the TDC and for the 19” HVPS for more detailed

information.

To perform time measurements with respect to an external clock, provide start pulses to the start

input of the TDC. Use the corresponding BNC socket of the TDC (see the TDC manual for the specific

connection schema of the TDC).

3. .3 Software Interface and Installation

All operation functions for data readout of the TDC are encapsulated in a dynamic linked library (scTDC1.dll).

Data processing and presentation on the PC is realized by a stand-alone application (TdcTimeHistsGUI) based

on Python 3, which needs to be installed to run the software.

The remote control of the 19” HVPS is realized via an Ethernet interface and a binary encoded TCP/IP

protocol. See the documentation of the SC_HV_binary_protocol for further details. There is also a java based

stand alone software for device control and voltage readout, which needs Java 8 to be installed.

The delivery package includes a storage medium with the TDC hardware driver, a SDK for the scTDC1.dll

library, and stand-alone applications based on Phyton and Java.

Insert the storage medium to your PC and install the hardware driver. See the Software Installation manual

for further details.

Read-out of the PickUp-ToF is done via the USB port of the TDC. The specific PC system requirements can be

found in the corresponding TDC manual.

For Linux Users, please see specific installation instructions on the storage device.

PickUp-ToF - Manual

4 Device Layout & Operation

4.1 PickUp-ToF – Operation Voltages

There are 2 defined lens settings available for the PickUp-ToF to be operated in two different operation

modes. The first mode has a higher, the second mode a lower operation voltage for the collector. These two

settings are given below in Table 2.

Lens Name HV Channel/ cable label OperationVoltage (Mode 1) Operation Voltage (Mode 2)

Trans1a HV3a/ HV3(1) 400V 400V

Collector HV2 200V 50V

ToF HV1 50V 50V

Trans1b HV4a/ HV4(1) 400V 400V

DetFoc HV6 250V (5*ToF Voltage) 250V (5*ToF Voltage)

Trans2a HV3b/ HV3(2) 800V 800V

Trans2b HV4b/ HV4(2) 800V 800V

Focus HV5 2000V 1500V

Table : PickUp-ToF Operation Voltages

4. PickUp-ToF – Schematic Lens Setup and Trajectory Simulation

Figure 2 shows schematic lens setup of the PickUp-ToF as well as the result of trajectory simulation for the

operation mode 1. Arrows with the same color mark identical potentials.

PickUp-ToF - Manual

Figure : Schematic lens setup of the PickUp-ToF with results of trajectory simulation

4.3 PickUp-ToF – Connection Ports

The PickUp-ToF comes with a 12pin feedthrough for high voltage supply of the electrostatic lenses (see Figure

3).

The detector itself has its own feedthroughs for HV supply and signal readout (see the detector manual for

detailed information).

PickUp-ToF - Manual

HV channel/ cable label lens name

1. HV3a/ HV3(1) Trans1a

2. HV2 Collector

3. HV1 ToF

4. HV4a/ HV4(1) Trans1b

5. Interlock

6. Interlock

7. N/A

8. HV6 DetFoc

9. N/A

10. HV3b/ HV3(2) Trans2a

11. HV4b/ HV4(2) Trans2b

12. HV5 Focus

Figure 3: Pin assignment of the 1 pin feedthrough

PickUp-ToF - Manual

5 List of Figure

Figure 1: Connection schema of the PickUp-ToF, its detector and its readout and supply package...........................8

Figure 2: Schematic lens setup of the PickUp-ToF with results of trajectory simulation...............................................11

Figure 3: Pin assignment of the 12pin feedthrough..........................................................................................................................12