Freiberg Instruments lexsyg research Manual And Documentation
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Freiberg Instruments lexsyg research Manual And Documentation

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GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany
Freiberg
Instruments
Manual and documentation
lexsyg
2012-10-12
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  • Page 1 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Manual and documentation lexsyg 2012-10-12 1 / 78...
  • Page 2 We work constantly at the advancement of all measuring systems. Copying or reprinting, even in extracts, is only allowed with a written approval from the Freiberg Instruments GmbH. All rights according to copyright subject to Freiberg Instruments GmbH. Subject to alterations.

  • Page 3: Table Of Contents

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Table of Contents Table of Contents ........................3 Table of Figures ........................6 Introduction ........................8 1.1. Important Information ....................8 1.1.1. Declaration of Conformity ................. 8 1.1.2.
  • Page 4 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments 2.3. Operation ........................28 2.4. Construction Drawing ....................29 2.4.1. Electrical wiring ....................30 2.4.2. Specification ....................30 Software ........................31 3.1. How to get start .......................31 3.2. Overview .........................31 3.2.1. Application status ....................32 3.2.2.
  • Page 5 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments 5.1. Literature ........................53 Attachment: Radiation source documentation ..............54 5 / 78...

  • Page 6: Table Of Figures

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Table of Figures Figure 1: lexsyg modular luminescence reader ..............13 Figure 2: technical overview of lexsyg ..................14 Figure 3: sample handling ....................15 Figure 4: sample loading lid ....................16 Figure 5: automated detector changing unit, with up to four detectors ........16 Figure 3: overview on the different module configuration options .........18 Figure 7: OSL irradiation unit ....................20...
  • Page 7 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments figure 35: opening the extra TL position ................49 figure 36: schematic of the filterwheel ...................50 figure 37: opening for changing filters ...................50 figure 38: location of the loading/unloading unit ..............51 figure 39: removing the loading/unloading unit ..............51 figure 40: maintenance panel for changing the heater unit ...........52 figure 41: removedmaintenance panelwith visibleheater unit ..........52...

  • Page 8: Introduction

    1.1.1. Declaration of Conformity All lexsyg equipment from Freiberg Instruments is conform to the European legal provision about the electromagnetic compatibility (89/336/EWG), the directive of the modification of CE marking (93/68/EWG), the EG machine directive (2006/42/EG) and the EG low tension directive (73/23/EWG).

  • Page 9: Not Intended Application

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments • The lexsyg equipment is used for luminescence measurements either by thermal (TL), optical (OSL) or radiation (RF) stimulation. It is configured for the measurement of certain materials.

  • Page 10: Fundamental Advices

    Don’t expose any body parts, e.g. eyes, arms, to the radiation! This will lead to irreversible damages. All works at this partition of the equipment should only be carried out by members of Freiberg Instruments. 2. Warning notice: Usage of alpha and beta radiation source! All legal precautions have to be followed and special training as well as constant observation of operator depending on the local regulations is required.

  • Page 11: Control Of The Operating Status

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Commissioning occurs by: 1. Positioning the equipment on a horizontal area. 2. Connecting with the main supply, as shown on the “lexsyg supply” document. Depending on configuration and intended use: nitrogen (helium), air pressure, vacuum, electrical power, LAN 3.

  • Page 12: Electricity

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments 1.2.7. Electricity The lexsyg equipment runs with 110V/230 V AC, 50/60 Hz. Internal low tension in the range of +/-5 to +/-48 V DC is used. For the connection with the main supply a grounding conductor is necessary (DIN VDE 0100- 410 (IEC 60364-4-41)).

  • Page 13: Equipment

    Freiberg Instruments Equipment LEXSYG is a luminescence reader designed and constructed by Freiberg Instruments in co- operation with luminescence research and dating laboratories [ 1]. It is a highly flexible modular system for measuring different kinds of luminescence using thermal, optical or ionizing radiation stimulation (i.e. TL, OSL/IRSL and RL) especially in luminescence dating (geo-/archaeochronometry), mineralogical research, solid state dosimetry, radiation control and material sciences.

  • Page 14: Descriptions

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments 2.1. Descriptions Figure 2: technical overview of lexsyg Sample handling Sample storage and measurement is separated in order to prevent crosstalk. Samples are transported by a pneumatic handling system from the storage position to the measurement chamber.

  • Page 15: Figure 3: Sample Handling

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Figure 3: sample handling Loading Several samples can be loaded at the same time by using the loading lid (Figure 4). Samples can be exchanged at almost any time during the measurement procedure. Measurement sequence selection has to be done by operation software.

  • Page 16: Figure 4: Sample Loading Lid

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Figure 4: sample loading lid Pneumatics Pneumatics is used for sample handling from storage wheel to the measurement position and for opening the radiation source shutters. All components are chosen from standard automation companies with mean times between failures of several hundred thousand cycles.

  • Page 17: Module 1.1/1.2/1.3: The Measurement Chamber

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments 2.1.1. Module 1.1/1.2/1.3: The Measurement chamber Each lexsyg instrument consists of a measurement chamber prepared for modular extensions for measuring different kind of luminescence.  prepared for vacuum (≤ 10 mbar) and inert-gas purging ...

  • Page 18: Module 2.1. Beta Irradiation

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Figure 6: overview on the different module configuration options 2.1.2. Module 2.1. Beta Irradiation lexsyg instruments can be equipped with 2 irradiation units. The Beta-irradiation unit is special made for RF measurements and delivers its highly uniform irradiation field also to samples for other luminescence measurements (TL, OSL, RP, ...).The Irradiation units are delivered separately inclusive inbuilt radioactive sources.

  • Page 19: Module 3: Heating Unit

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments  recommended for dating techniques where the alpha-component has to be determined (e.g. fine-grain, flint)  Radioisotope: Am-241  vacuum irradiation, fully software controlled  includes shutter unit (minimum open/close cycle time 0.5 s) ...

  • Page 20: Module 5.1.1/5.1.2/5.1.3/5.1.4: Pmt Modules

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments uniform excitation by light. The power of each laser light-source at the sample can be software adjusted constant or can be ramped (e.g. LM-OSL). Software options (see section 12.) allow further flexible use (e.g.
  • Page 21 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Module 5.1.1: UV-VIS PMT Module  for standard applications in luminescence dating and dosimetry  detection unit with standard bialkaline cathode PMT (HAMAMATSU)  sensitivity 280-650 nm ...

  • Page 22: Module 5.2.1: Emccd Unit

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments electromagnetic shutter, UV-VIS optics Module 5.1.4: Vis-NIR PMT Module  necessary for RF dose determination using the 865 nm potassium feldspar emission  useful/necessary for any other measurements where red and NIR sensitivity is needed ...

  • Page 23: Modules 6

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments  8 mm diameter sample is imaged on the camera chip (ca. 16µm / pixel) using an optics adaption and filter changing unit (6.2)  incl. electromechanical shutter ...

  • Page 24: Module 6.1.1: Pmt Optics Adaption & Filter Changing Unit

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments 2.1.9. Module 6.1.1: PMT optics adaption & filter changing unit These optical modules are designed for use with PMT units only. They are best performed to collect the luminescence light from the sample, suppress stray-light (OSL, PL) or thermal noise (TL), filter it and transfer the light efficiently to the photo-cathode of the PMT.

  • Page 25: Module 6.1.3: Reduced Pmt Optics Unit

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments  no stray-light transmission outside the optical path  optimized filter-sets for all main quartz and feldspar minerals luminescence emission and other materials/applications available  filter sets (interference, colour-glass optical filters) optimised for highest transmission individual wave-bands and best blocking stimulation light (OSL) and/or thermal noise (TL, black-body radiation) ...

  • Page 26: Module 6.2.2: Imaging Optics Adaption & Filter Changing Unit For Rf Measurement Position

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments  adapts automatically detected wave-band (optical window filter set) for best image quality  works with equivalent efficiency also with PMT detectors  2 filter-wheels with each 6 positions and each 6.5 mm filter-space ...

  • Page 27: Module 7.1: Led-Based Monochrome Light Irradiation Unit

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments  optimized filter-sets for all main quartz and feldspar minerals luminescence emissions and such for other materials/applications are available  filter sets (interference, colour-glass optical filters) optimised for highest transmission individual wave-bands 6 user-defined detection window filter-sets are included 2.1.14.

  • Page 28: Installation

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments 2.2. Installation Equipment is packed for shipment. Detectors are disassembled. A detail description how to pack and unpack the equipment can be found in a separate report. 1.

  • Page 29: Construction Drawing

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments 2.4. Construction Drawing Figure 9: figure technical drawings: see enlarged version at the end of the document Dimension: 71.6 x 103.1 x 85.1 cm Weight: 90 - 130 kg (depending on options) 29 / 78...

  • Page 30: Electrical Wiring

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments 2.4.1. Electrical wiring Figure 10: Electrical wiring 2.4.2. Specification Laser depending on option: see data sheet for detailed laser safety specifications Warning: Never open laser safety installations. Whenever opening any mechanical door in the installation or excitation/detection section disconnect from main power supply or wear safety goggles! Wavelength [nm]...

  • Page 31: Software

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Software 3.1. How to get start Figure 11: Lexsyg Studio link The lexsyg measurement system is controlled by the Lexsyg Studio application. It is already installed on the provided PC and all properties are set. The application can be started by clicking the lexsyg Studio link (see Figure 11) on the desktop screen of the PC.

  • Page 32: Application Status

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments 3.2.1. Application status The connection button (Figure 13, red button) indicates if the Lexsyg Studio application is connected to the lexsyg measurement system Figure 13: application status or not.

  • Page 33: Measurement Flow

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments 3.2.4. Measurement flow This element provides an overview about the actual running sequence. The status frame contains the name and number of the actual running step. Temperature and counts are showing the actual temperature of the heating unit and the counts of an PMT during a running measurement (see Figure 17).

  • Page 34: Connection And Initialization

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments EMCCD camera spectrometer When hover with the mouse above an icon a description of the according symbol appears. 3.3. Connection and Initialization Before any operation with the lexsyg measurement system can be started, it is necessary to connect and initialize the system.
  • Page 35 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments The lexsyg measurement system provides space for up to 80 sample discs. The actual allocation can be determined at the sample list. It provides a list with an entry for every sample slot containing the name of the containing sample, the slot- number, the associated sequence and the status of the sample slot.

  • Page 36: Creating A Sequence

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments 3.4.2. Creating a sequence Every measurement done with an aliquot is defined by a sequence or list of elementary process steps done one after another. These sequences are created in the sequence editor and are stored in a library for later assignment to a concrete sample disc or aliquot.

  • Page 37: Assigning A Sequence To A Sample Slot

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Figure 16: sequence editor 3.4.3. Assigning a sequence to a sample slot After creating and saving a sequence using the sequence library, the sequence can be allocated to a sample slot.

  • Page 38: Handle Measurement Data

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments After the measurement sequence of a slot is completed, its status in the sample list changes to measured. If a measurement contains detection via photomultiplier, at the beginning of the data recording the data view window (Figure 18) shows up.

  • Page 39: Special Hardware Characteristics

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments The second file format is the .bin file format. It can be accessed by clicking Analysis -> Open measurement folder, as well. For every sequence a .bin file is created which contains all measurements done with this sequence.

  • Page 40: Spectrometer

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments 3.5.2. Spectrometer The spectrometer camera has to cool down before it can be used for measurement. Open the spectrometer control window by clicking Controls -> spectrometer in the menu bar (Figure 20).

  • Page 41: Editing Cooling Power And Evacuation Time

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments application. After clicking the connection- button lexstudio should connect to the measurement system. If not, check the connection cables, recheck the IP address and the network- settings of the operating system and make sure that the lexsyg measurement system is powered and running.

  • Page 42: Initialization After An Incident - First Aid Menu

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Initialization after an Incident – First aid menu 3.6.4. If an uncommon event occurs during a measurement, it is necessary to reinitialize the system. The first step is to click the Reset Lexsyg and initialize new button (Figure 22 –1) in the first aid menu.
  • Page 43 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Finally check the sample slots for the transferred sample disc. If the disc remains lost, it is necessary to open the chamber manually and find the disc before proceeding with the measurement.

  • Page 44: Service And Repair

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Service and Repair 4.1. Service Regular maintenances of the equipment are not essential, but we suggest an annual service by the manufacturer to check all system settings and the operating ability. A vision control of the whole system is recommended every six month.

  • Page 45: Lift Up The Measurement Chamber

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Control of chamber pressure Control of inert gas pressure Setting of air pressure for the pneumatic system Setting of inert gas pressure Figure 24: checking system pressures 4.1.2.

  • Page 46: Cleaning The Measurement Chamber

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments 4.1.3. Cleaning the measurement chamber First of all switch off the device and lift the measurement chamber (as described in chapter 4.1.2). There is a gap between the measurement chamber and the ground plate. Use this gap and a thin brush or vacuum cleaner to clean the chamber.

  • Page 47: Cleaning The Chamber Windows

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments 4.1.4. Cleaning the chamber windows The chamber has two measurement positions containing windows made of quartz glass. These windows have to be cleaned regularly because heating and silicon oil can cause dust on it.

  • Page 48: Figure 32: Overview Of The Osl-Unit

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Now you have free access to the detection window. You can remove it by opening the tree screws in the frame to clean or replace it. figure 31: overview of the OSL-unit Mounting works in reverse direction.
  • Page 49 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments figure 34: opening the extra TL position Now you have free access to the detection window. You can remove it by opening the tree screws in the frame to clean or replace it. Mounting works in reverse direction.

  • Page 50: Exchanging Detection Filter

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments 4.1.5. Exchanging detection filter The used filter wheels have 6 positions. Every Filterwheel has an easy reachable cap to get access to the filters inside. Openings: one for changing filters and one for the light beam Number of selected filter figure 35: schematic of the filterwheel...

  • Page 51: Access To Internal Sample Loading/Unloading Unit

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments 4.1.6. Access to internal sample loading/unloading unit The loading/unloading unit is hidden under the big cap on the chamber. figure 37: location of the loading/unloading unit Open the screws and move the cap up.

  • Page 52: Spare Parts

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Open the panel by unmounting the screws figure 39: maintenance panel for changing the heater unit Now the measurement chamber has to be moved up (see point 4.1.2). The arm can be removed by the three screws in the centre.

  • Page 53: Physical Background

    GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Physical Background 5.1. Literature [ 1 ] M. R. Krbetschek J. Götze, A. Dietrich, T. Trautmann, Radiation Measurement,Vol. 27, No. 5/6,pp. 695-748,1997, Spectral information from minerals relevant for luminescence dating and M.R.
  • Page 54 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Attachment: Radiation source documentation Radiation Related Aspects of the lexsyg Luminescence Measuring System Document: RP-061 Revision: Date: 02-Aug-2011 Revision History: Date Rev. Description 02-Aug-2011 Initial release Radiation Source and Radiation Source Module The lexsyg measuring system The measuring system lexsyg(see fig.
  • Page 55 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Fig. 1 Basic concept of the measuring system lexsyg Control panel Photo-multiplier tube Port for sample loading CCD camera Radiation source modules Fig. 2 Measuring system lexsyg (housing cover open) 55 / 78...
  • Page 56 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Fig. 3 Sample handling system of the lexsyg Samples are placed on a circular sample holder accommodating up to 80 samples. During the automatic measuring procedure the individual sample to be analyzed is moved to the appropriate position (irradiation, luminescence detection, etc.) in the measuring chamber by means of a transfer system.
  • Page 57 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Radiation Source Module The radiation source module contains the radiation source (see figures 4 – 6) and provides necessary operating and safety features. adapter for pressurized air (shutter) quartz glass window (fluorescence light exit) connectors...
  • Page 58 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Position sensors Retracting spring radiation source source holder shutter Fig. 6 Radiation source module (bottom view, transport safety plate removed) Left: shutter closed; Right: shutter open The radiation source is safely contained in the radiation source module.
  • Page 59 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Beta radiation source The current design of the beta radiation source features a circular arrangement of 17 single miniaturized, sealed beta sources (see table 1). These single sources are inserted into a circular groove (fig.
  • Page 60 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments The radiation source is precisely positioned and safely fixed in the source holder by three special screws (see fig. 6, right) ensuring that the radiation exit window cannot be touched or even damaged by the shutter.
  • Page 61 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments In case the radiation source module is not attached to the base plate of the lexsyg the source module’s bottom side shall be completely covered by a 4 mm thick aluminium transport safety plate.
  • Page 62 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments sample holder 1 m distance to housing surface of lexsyg In the present case, the radiation source module was completely sealed against beta radiation. Hence, the equivalent dose rate measured was solely caused by photon (bremsstrahlung) radiation created within the source body, the shutter and the source module housing.
  • Page 63 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments operator near the device 2.2.2 Exchange of optical detector/adjustment of optical components Process steps 1. Opening of the lexsyg housing 2. Disassembling of the optical system mounted on top of the radiation source module 3.
  • Page 64 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments 2.2.3 Exchange of quartz glass window (top of the radiation source module) Process steps 1. Opening of the lexsyg housing 2. Disassembling of the external optical system mounted on top of the radiation source module 3.
  • Page 65 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments 2. 2.4 Cleaning of the measuring chamber/sample carousel Process steps 1. Opening of the lexsyg housing 2. Opening of the measuring chamber 3. Cleaning of the measuring chamber by means of special tools (e.g.
  • Page 66 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments 2.2.5 Installation of the radiation source module Process steps 1. Opening of the lexsyg housing 2. Taking out of the radiation source module off the shielding shipping/storage container 3.
  • Page 67 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Note: The measuring system lexsyg research and the pre-calibrated radiation source module are shipped separately. Installation of the radiation source module into the measuring system can easily and safely be performed by the user per instructions provided by the manufacturer.
  • Page 68 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments 2.2.7 Lab user (without operating the lexsyg) Process steps Laboratory work Minimum distance to source 200 cm Dose rate < 1 µSv/h Annual dose < 1 mSv ...
  • Page 69 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments the lexsyg beta radiation escapes from the radiation source module  Window of radiation source shall be covered appropriately to minimize exposure.  Use mobile radiation shield (10 mm acrylic glass) wear radiation protection...
  • Page 70 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments The access to the radiation source, if installed in the lexsyg, is limited to authorized personnel only: To open the housing of the measuring system a key is required. The radiation module is affixed to the base transport safety plate of the lexsyg by four special screws requiring special tooling to be unfastened.
  • Page 71 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Maintenance and service The radiation source is exclusively used under laboratory conditions. It is not subjected to any excessive mechanical, thermal or chemical loads other than specified in the appropriate ISO 2919 testing protocol.
  • Page 72 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Source leakage test For source leakage testing the manufacturer recommends a wipe test per ISO 9978. The source manufacturer recommends the wipe to be taken directly on the radiation window of the source (see fig.
  • Page 73 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Fixing screws for source. Do not unfasten! Source window (direct wipe test) Shutter (indirect wipe test) Surfaces for the wipe test (Shutter in “open” position providing access to the Fig.
  • Page 74 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Transportation and installation of radiation source module The radiation source will be assembled into the radiation source module at the manufacturer’s site and will be supplied as calibrated and tested assembly. Separate from the lexsyg main unit, the radiation source module is being shipped in a certified type A shipping container (fig.
  • Page 75 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Perform radiation survey. The dose rate at 30 cm from the source module is expected to be less than 50 µSv/h. Note that the actual reading may vary depending on the radiation meter used.
  • Page 76 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Fig. 12 5 mm lead housing (on right) to be placed over the radiation source module after installing in the lexsyg main unit 76 / 78...
  • Page 77 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Attachment 1 Data sheet of beta source Sr0.S03-1 (Eckert & Ziegler BEBIG GmbH) 77 / 78...
  • Page 78 GmbH ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany Freiberg Instruments Attachment 2 Type A shipping container drawing PZ-0103-001 (Eckert & Ziegler nuclitec GmbH) 78 / 78...

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