Dectris MYTHEN2 Manual de usuario

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User Manual MYTHEN2 Detector Systems Version 8

DECTRIS Ltd.

5405 Baden-Daett wil

Swit zerland

www.dectris.com

User Manual

MYTHEN2 Detector Systems

Version 8

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User Manual MYTHEN2 Detector Systems Version 8

Document Version V8

DECTRIS Ltd

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User Manual MYTHEN2 Detector Systems Version 8

Contents

1. General Information .............................................................................................................. 1

1.1. Contact and Support ......................................................................................................... 1

1.2. Explanation of Symbols .................................................................................................... 1

1.3. Explanation of Terms ........................................................................................................ 2

1.4. Warranty Information ........................................................................................................ 2

1.5. Disclaimer .......................................................................................................................... 2

2. Safety Instructions ................................................................................................................ 4

3. System Description ................................................................................................................ 5

3.1. Hybrid Photon Counting (HPC) Technology .................................................................... 5

3.1.1. Overview .......................................................................................................................................... 5

3.1.2. Basic Functionality ......................................................................................................................... 6

3.1.3. Single Photon Counting ................................................................................................................. 7

3.2. Detector Settings ............................................................................................................... 9

3.3. Threshold Trimming ........................................................................................................ 10

3.4. Flat-Field Correction ........................................................................................................ 10

3.5. Count Rate Correction .................................................................................................... 10

4. MYTHEN2 Detector Systems ................................................................................................. 11

5. Technical Specifications ....................................................................................................... 13

5.1. Quantum Efficiency ......................................................................................................... 13

5.2. MYTHEN2 Detector Module ............................................................................................. 13

5.3. Detector Control System DCS4 ...................................................................................... 15

6. Detector Dimensions and Connectors .................................................................................... 16

6.1. MYTHEN2 1D .................................................................................................................... 16

6.2. MYTHEN2 1K .................................................................................................................... 17

6.3. Detector Control System DCS4 ...................................................................................... 18

6.4. Connectors and Connecting Cables DCS4 .................................................................... 20

6.4.1. DCS4 Rear Panel .........................................................................................................................20

6.4.2. DCS4 Front Panel ........................................................................................................................21

6.5. Power Supply ................................................................................................................... 23

6.6. Data Cable ........................................................................................................................ 23

6.7. Fixation Kit ....................................................................................................................... 25

7. Installing the Detector System.............................................................................................. 27

7.1. Transport Considerations ............................................................................................... 27

7.2. Mounting the Detector System ....................................................................................... 27

7.3. Setting up the Computer ................................................................................................. 28

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User Manual MYTHEN2 Detector Systems Version 8

7.4. MYTHEN2 Web Client ...................................................................................................... 29

7.4.1. Software Installation .....................................................................................................................29

7.4.2. Starting the Web Client ................................................................................................................29

7.4.3. Acquisitions with Web Client .......................................................................................................30

7.4.4. Customizing the Acquisition Settings ........................................................................................32

7.4.5. Complete Documentation ............................................................................................................33

8. Changing Network Settings .................................................................................................. 34

9. Triggering and Gating .......................................................................................................... 36

9.1. Triggering ......................................................................................................................... 36

9.1.1. Overview Trigger Modes .............................................................................................................36

9.1.2. Internal Trigger ..............................................................................................................................37

9.1.3. Single Trigger ................................................................................................................................37

9.1.4. Activating the Trigger Mode ........................................................................................................38

9.1.5. Trigger Level and Time Jitter ......................................................................................................39

9.1.6. Delay Before Frame .....................................................................................................................39

9.1.7. Trigger Signal and Multiple Readouts .......................................................................................40

9.1.8. Continuous Trigger .......................................................................................................................41

9.2. Gating/ External Enable .................................................................................................. 43

9.2.1. Activating the Gating Mode .........................................................................................................43

10. Bad Channels ...................................................................................................................... 45

11. Firmware Update ................................................................................................................ 46

12. Web Interface Update ......................................................................................................... 48

13. Factory Reset ...................................................................................................................... 49

14. Temperature and Humidity Control ....................................................................................... 50

15. Cleaning and Maintenance ................................................................................................... 51

16. Appendix ............................................................................................................................ 52

16.1. Referenced Documents ................................................................................................... 52

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User Manual MYTHEN2 Detector Systems Version 8

Document History

Current Document

Version

Date

Status

Prepared

Checked

Released

24.04.2020

released

RM, LW

Changes

Version

Date

Changes

09.04.2019

Updated Corporate Design

30.10.2017

Updated web links

28.11.2016

Updated references

05.07.2016

Support for editing the bad channel files

Custom flat-field upload explanation

27.10.2015

Major update and documentation rework

 Document versioning system changed

 Contact information updated

 Figure 43 exchanged

 Module and DCS4 photos updated (screw lock cable

and fixation kit)

04.09.2014

Old versions

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User Manual MYTHEN2 Detector Systems Version 8

1. General Information

1.1. Contact and Support

Address:

DECTRIS Ltd.

Taefernweg 1

5405 Baden-Daettwil

Switzerland

Phone:

+41 56 500 21 02

Fax:

+41 56 500 21 01

Homepage:

http://www.dectris.com/

Email:

support@dectris.com

Should you have questions concerning the system or its use, please contact us via telephone, e-mail or

fax.

1.2. Explanation of Symbols

Symbol

Description

Important or helpful notice

Caution. Please follow the instructions carefully to prevent equipment damage or

personal injury.

DC-current

AC-current

Ground

Functional earth

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User Manual MYTHEN2 Detector Systems Version 8

1.3. Explanation of Terms

Term

Description

ASIC

Application-Specific Integrated Circuit

DAC

Digital Analog Converter

GUI

Graphical User Interface

DCS4

Detector Control System for up to 4 detector modules

Detector Module

The smallest fully functional unit of the detector (1280 or 640 channels for

MYTHEN2)

P2P

Peer to Peer connection (fixed IP address)

MCB

Module Control Board

FIFO

Storage working according to First In – First Out

keV

Kilo electron Volt

1.4. Warranty Information

Should your detector require warranty service, contact DECTRIS for further information. Before shipping the

system back, please contact DECTRIS to receive the necessary transport and shipping information. Make

sure that the original packaging is used when returning the system.

Do not ship the system back before you receive the necessary transport and shipping

information.

When returning the detector system for repair, be sure to fill out and include the service form at the back of

this document to provide the support division with the necessary information.

1.5. Disclaimer

DECTRIS has carefully compiled the contents of this manual according to the current state of knowledge.

Damage and warranty claims arising from missing or incorrect data are excluded.

DECTRIS bears no responsibility or liability for damage of any kind, also for indirect or consequential

damage resulting from the use of this system.

DECTRIS is the sole owner of all user rights related to the contents of the manual (in particular information,

images or materials), unless otherwise indicated. Without the written permission of DECTRIS it is prohibited

to integrate the protected contents in this publication into other programs or other websites or to use them

by any other means.

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User Manual MYTHEN2 Detector Systems Version 8

DECTRIS reserves the right, at its own discretion and without liability or prior notice, to modify and/or

discontinue this publication in whole or in part at any time, and is not obliged to update the contents of the

manual.

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User Manual MYTHEN2 Detector Systems Version 8

2. Safety Instructions

Please read these safety instructions before operating the detector system.

 Before turning the power supply on, check the supply voltage against the label on the power supply.

Using an improper main voltage will destroy the power supply and damage the detector.

 Use only the power supply delivered by DECTRIS

 Power down the detector system before connecting or disconnecting any cable.

 Make sure the cables are connected and properly secured.

 Do not use any other cables than delivered by DECTRIS

 Avoid pressure or tension on the cables.

 The detector system should have enough space for proper ventilation. Operating the detector

outside the specified ambient conditions could damage the system.

 The detector is not specified to withstand direct beam at a synchrotron. Such exposure will damage

the exposed pixels.

 Place the protective cover on the detector when it is not in use to prevent the detector from

accidental damage.

 Opening the detector or the power supply housing without explicit instructions from DECTRIS will

void the warranty.

 Do not install additional software or change the operating system.

 Do not touch the entrance window of the detector.

 Do not connect any device to the USB plugs of the DCS4 except the detector modules.

 Do not connect the detector module to any other USB device than the DCS4.

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User Manual MYTHEN2 Detector Systems Version 8

3. System Description

3.1. Hybrid Photon Counting (HPC) Technology

3.1.1. Overview

All X-ray detector systems produced by DECTRIS operate in single-photon-counting mode, and are based

on Hybrid Photon Counting (HPC) technology.

The main difference to traditional detectors is that the X-rays are directly converted into an electric charge

in the silicon sensor (Figure 1). The signal is then processed in the CMOS readout chips that are directly

connected to the senor pixels/stripes.

This technology has no dark current or readout noise and allows for a high dynamic range (1:16’777’216

(24 bits) per channel per image), a short readout time (< 0.1 ms), A higher frame rate (up to 1000*

frames/s) and an excellent spatial resolution (channel width 50 µm). Three available silicon sensor

thicknesses (320 µm, 450 µm or 1000 µm) and two strip lengths (4 mm or 8 mm) ensure optimal quantum

efficiency for experiments in the energy range from 4 – 40** keV (Figure 2, Table 1). However, detectors

can be used for higher X-ray energies with the corresponding lower efficiency. In order to handle the high

flux of modern synchrotron light sources, count rates > 106 counts/s/channel are supported. However, the

detector cannot withstand a direct synchrotron beam due to potential radiation damage.

*Frame rates up to 1000 Hz are possible only for the MYTHEN2 X-series (synchrotron applications).

**In order to optimize signal-to-noise ratio, energies as low as 4 keV can be reached only with sensor

geometry corresponding to 320 m thickness and 4 mm strip length (Table 1).

FIGURE 1: PRINCIPLE OF DIRECT X-RAY DETECTION BY HPC DETECTORS. CONVERSION OF X-RAY INTO AN ELECTRICAL CHARGE IN THE

SENSOR PIXEL/STRIPE.

X-ray

Sensor Pixel

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