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User Manual MYTHEN2 Detector Systems Version 8
DE C T RI S L t d .
5 4 0 5 B a d e n - Da e t t wi l
S wit ze r la n d
www. d e c t r is . c o m
User Manual
MYTHEN2 Detector Systems
Version 8
Page 1: ...0 50 User Manual MYTHEN2 Detector Systems Version 8 DECTRIS Ltd 5405 Baden Daettwil Switzerland www dectris com User Manual MYTHEN2 Detector Systems Version 8...
Page 2: ...1 51 User Manual MYTHEN2 Detector Systems Version 8 Document Version V8 Copyright 2020 DECTRIS Ltd...
Page 3: ...ming 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 Cont...
Page 4: ...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 Trig...
Page 5: ...19 Updated Corporate Design 5 30 10 2017 Updated web links 4 28 11 2016 Updated references 3 05 07 2016 Support for editing the bad channel files Custom flat field upload explanation 2 27 10 2015 Majo...
Page 6: ...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 Symbol...
Page 7: ...ng 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...
Page 8: ...stems 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...
Page 9: ...on 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 specifi...
Page 10: ...tion channel width 50 m Three available silicon sensor thicknesses 320 m 450 m or 1000 m and two strip lengths 4 mm or 8 mm ensure optimal quantum efficiency for experiments in the energy range from 4...
Page 11: ...se are reverse biased depleted pn junctions that are processed in high resistivity silicon Each detecting unit each strip in such a silicon array is connected to its corresponding readout channel desi...
Page 12: ...r threshold is adjusted by six individual trim bits This process is called Threshold trimming and it is described in more detail in the Section 3 3 Threshold Trimming In order to clarify the functiona...
Page 13: ...counts i background due to the high energy cosmic counts or ii noise counts that are caused by the readout chip intrinsic electronic noise The former cannot be circumvented and the latter could be sup...
Page 14: ...ettings based on the threshold energy in use Figure 5 For a given threshold energy the gain is set as low as the electronic noise level allows to This effectively suppresses noise counts from the elec...
Page 15: ...nsor collect charge from a larger sensor volume cause differences in the number of counted X rays on a channel to channel basis Since these variations are stable in time they can be corrected The flat...
Page 16: ...detectors TABLE 2 MYTHEN2 DETECTOR FAMILY AND AVAILABILITY OF VARIOUS COMBINATIONS OF SENSOR THICKNESS AND STRIP LENGTH Sensor Geometry MYTHEN2 R MYTHEN2 X 1D 1K 1D 1K Number of channels per module 6...
Page 17: ...CS4 Do not connect any other devices or USB devices to DCS4 this might destroy the devices and the DCS4 USB Warning Only approved for DECTRIS modules Connection of any other devices will result in dam...
Page 18: ...tector system module for regular operation Once the cover is removed the detector window is visible The sensor is located behind a 12 m thick aluminized Mylar foil to protect it from dust and light Th...
Page 19: ...Sensor Reverse biased pn junction array Detection principle Single photon counting Sensor thickness m 320 450 1000 Arrangement of channels One dimensional single row Dimensions of one channel width x...
Page 20: ...DCS4 Table 5 via USB 3 0 device cables Figure 7 A fixation kit is mounted on DCS4 Figure 6 and Figure 16 This kit enables USB cables to be locked on the DCS4 side In the following paragraphs figures...
Page 21: ...Mylar foil to avoid damage of the sensors Danger of electric shock Do not touch the Mylar foil The sensors behind the Mylar foil are operated at high voltages Touching the Mylar foil can cause an elec...
Page 22: ...not touch the Mylar foil The sensors behind the Mylar foil are operated at high voltages Touching the Mylar foil can cause an electrical shock FIGURE 10 MOUNTING THE PLUG OF THE USB 3 0 CABLE TO THE D...
Page 23: ...18 51 User Manual MYTHEN2 Detector Systems Version 8 6 3 Detector Control System DCS4 a b FIGURE 11 MYTHEN2 1K DIMENSIONS OF THE MODULE HOUSING AND POSITIONS OF THE TAP HOLES FOR MOUNTING THE DETECTOR...
Page 24: ...anual MYTHEN2 Detector Systems Version 8 c d FIGURE 12 DETECTOR CONTROL SYSTEM DCS4 DIMENSIONS AND POSITIONS OF THE TAP HOLES FOR MOUNTING THE DCS4 A FRONT PANEL B BACK PANEL C DOWN AND D RENDERING MO...
Page 25: ...0 device cable Connector USB A 3 0 female Do not connect devices to DCS4 other than ones delivered by DECTRIS Connecting different devices to DCS4 might destroy the devices and the DCS4 USB Warning O...
Page 26: ...e flash process the LED is flashing After completing the booting initialization phase the LED becomes green again 12V DC 12V DC power connection Use only the power supply delivered by DECTRIS Reset Sw...
Page 27: ...ug LEMO FFA 00 250 NTAC22 There are LEMO BNC adapter available LEMO ABF 00 250 CTA Ask DECTRIS support for details see Section 1 1 for support 5 0 V is the maximum voltage Applying a higher voltage wi...
Page 28: ...Input range specified on the back of the power supply Input 100 240 VAC 10 10 50 60 Hz 400 mA Connecting to the wrong supply voltage will destroy the power supply and could damage the detector Use onl...
Page 29: ...ctor pins by accident Connecting detector module if DCS4 is powered off Use only the CE certified data and power cables delivered by DECTRIS USB Warning Only approved for DECTRIS modules Connection of...
Page 30: ...1 User Manual MYTHEN2 Detector Systems Version 8 6 7 Fixation Kit a b c d FIGURE 15 FIXATION KIT DIMENSIONS AND POSITIONS OF THE TAP HOLES A ADAPTER PLATE B BASES AND RENDERINGS OF C ADAPTER PLATE D B...
Page 31: ...26 51 User Manual MYTHEN2 Detector Systems Version 8 a b FIGURE 16 FIXATION KIT PLATE AND TWO BASES UPPER AND LOWER ONE AND DCS4 A SCHEMATIC DRAWING AND B FIXATION PLATE INSTALLED ONTO DCS4...
Page 32: ...can be used After mounting the detector module s and the detector control system DCS4 mechanically the modules have to be connected to the DCS4 using the USB cables shipped with the detector system Ma...
Page 33: ...it with the DCS4 network port using an Ethernet cable the computer will be able to communicate with the DCS4 To power the detector system the DCS4 has to be connected to the power main with to the pr...
Page 34: ...the DCS4 in the address bar by default 192 168 0 90 You should see the MYTHEN start screen as shown in Figure 17 If you do not see the start screen please check that the system is powered and that it...
Page 35: ...ings can be specified the exposure time of one frame the number of frames to be acquired and the energy of your X ray source FIGURE 19 MAIN ACQUISITION PARAMETERS In order to start an acquisition clic...
Page 36: ...data of all frames and acquisitions can be accessed in the Acquisition accordion on the right part of the screen Figure 21 The data can be downloaded as compressed ZIP file by pressing the Save butto...
Page 37: ...rame can be defined Figure 22 For more details please see the complete documentation Section 7 4 5 FIGURE 22 ACQUISITION SETTINGS ACCORDION In order to individually adjust the threshold energy and the...
Page 38: ...ual MYTHEN2 Detector Systems Version 8 7 4 5 Complete Documentation The complete documentation of the Web Client can be found in the Help accordion on the right Figure 25 FIGURE 25 ACCESS TO THE FULL...
Page 39: ...4 in the following the IP 192 168 0 90 has to be replaced by the current IP address of your DCS4 Changing the network configuration of the DCS4 can cause malfunction of the communication in which case...
Page 40: ...redentials a web page opens where you can change the boot protocol either fixed IP or DHCP the IP the net mask broadcast the gateway and the MAC address After making your changes and checking that all...
Page 41: ...D is switched on The EN OUT signal can be used e g to synchronize other equipment with the MYTHEN2 detector system The trigger or gate mode can be activated in the MYTHEN Web Client or by software com...
Page 42: ...dout time depends on the number of bits read out default is 24 bits but is always shorter than 100 s The readout times can be read out with the command get readouttimes The user interface allows the d...
Page 43: ...ATING OPTIONS IN THE ACQUISITION SETTINGS ACCORDION AND B USING THE SINGLE TRIGGER MODE Figure 31 shows EXT IN and the EN OUT signals during a measurement of 1 ms The blue signal is the trigger signal...
Page 44: ...of 50 MHz The external EXT IN signal is normally not synchronized with the internal clock frequency and therefore a time jitter of 20 ns can be caused Depending on the edge steepness this time jitter...
Page 45: ...the Web Client after individual read outs Apart from the Sum Frames check box there is always a separate data file per frame FIGURE 35 EXT IN SIGNAL BLUE AND EN OUT SIGNAL GREEN OF FIVE CONSECUTIVE RE...
Page 46: ...ns with more than one frame tacq tbef 1 fmax With the trigger mode combo box the Continuous mode can be activated Figure 38 Setting up a measurement of 5 frames readouts each with 10 ms exposure time...
Page 47: ...zed or the acquisition is stopped The possibility to set a delay after trigger time is also given in the continuous trigger mode Figure 41 displays EXT IN and EN OUT signals for a measurement with Con...
Page 48: ...ton the detector system is in a status in which it is waiting for an external gating signal to start the acquisition Figure 43 depicts the EXT IN and the EN OUT signals during the measurement The lowe...
Page 49: ...files each containing the results of three gating signals The readout of a frame is triggered as soon as the system detects the falling edge of the last gating signal in a frame It must be ensured th...
Page 50: ...filename indicates for which threshold energy the file is valid The bad channels for a threshold energy for which there is no specific file are comprised of the union of the set of bad channels of the...
Page 51: ...In order to update the firmware of your DCS4 please follow these steps 1 Connect the DCS4 to your PC and turn it on 2 Open a browser on your PC 3 Enter the IP address of the DCS4 system By default th...
Page 52: ...47 51 User Manual MYTHEN2 Detector Systems Version 8 FIGURE 46 LOGIN TO THE DCS4 VIA YOUR WEB BROWSER...
Page 53: ...ocedure outlined in Section 11 After the firmware was successfully installed use the same upload procedure to update the web interface This will result in a The connection was reset warning in the bro...
Page 54: ...e contact pads have to be oriented upwards 2 Power on the DCS4 while pressing the reset button with a small pin 3 After half a minute the power LED starts to blink indicating the reset process Do not...
Page 55: ...d temperature range for operation is shown in Table 10 TABLE 10 AMBIENT CONDITIONS Condition Range Operating temperature 18 C to 28 C Operating humidity 75 RH 23 C Storage temperature 15 C to 40 C Sto...
Page 56: ...t The MYTHEN2 detector system has been designed for the detection of X rays from synchrotron sources or laboratory sources For other applications please contact DECTRIS for additional information MYTH...
Page 57: ...6 1 Referenced Documents All the following documents are available through DECTRIS Homepage https www dectris com support manuals docs overview TABLE 11 REFERENCED DOCUMENTS Term Description Socket In...
