Page 3 - Table of Contents
i Table of Contents Section 1: General Information ...................................................................................... 1-1 1.1 Introduction .................................................................................................. 1-1 1.2 Features.............................
Page 4 - ii
ii Section 3: Theory of Operation ...................................................................................... 3-1 3.1 Introduction .................................................................................................. 3-1 3.2 Overall Function Description Of The Model 35360A TR...
Page 5 - Section 1; General Information; machines. While its ease of operation makes it ideal for
General Information Introduction 1 1-1 Section 1 General Information 1.1 Introduction The Model 90100 TRACKER is a radiation measurement system intended for use in quality assurance programs for high-energy accelerators and Co 60 machines. While its ease of operation makes it ideal for daily checks ...
Page 7 - WARNING; Before You Start - Safety Precautions; The following terms are used in this manual.; Source Modes and Energies; Photons: 300 keV to 25 MeV, with suitable build-up material
General Information Before You Start- Safety Precautions 1 1-3 WARNING CAUTION 1.3 Before You Start - Safety Precautions This product is designed for quality assurance testing of therapeutic radiation treatment machines. It is not for machine calibration nor is it intended as a substitute for a prec...
Page 8 - Operators Manual; Recommended Operation Conditions; Source Distance: 100 cm; Nominal Ion Chamber Characteristics; Leakage: Less than 0.5 pA over the full operating temperature range; Ion Chamber Factory Calibration; Comparison Standard: 0.6 cc NE Farmer Probe with 3 MeV buildup cap.; Mechanical Specifications
Model 90100 Operators Manual 1-4 Recommended Operation Conditions Source Distance: 100 cm Collimated Field Size: 25 × 25 cm Source Dose Rate Range: 50 to 500 rads/min Nominal Ion Chamber Characteristics Wall and Window Material: Continental Polymers ACRYCAL-CP or equivalent Window Area Density: 600 ...
Page 9 - Measurements Mode; Nominal Full Scale and Sensitivity in Electrical Units:; Full Scale; Display Count
General Information Specifications 1 1-5 1.6.2 Model 35360A TRACKER Display Measurements Mode The measurement mode is user-selected from the front panel prior to the start of the exposure. Dose (rad): Electrometer is operated in integrating mode with capacitive feedback. Dose Rate (rad/min): Electro...
Page 10 - High Performance Battery Charger; Part Number: 37783-X where X denotes cable length in meters.; Unpacking and Inspection
Model 90100 Operators Manual 1-6 Offset Temperature Drift: The zero offset voltage will drift less than ± 1 count at the display over the operating range of 10°C to 35°C. High Performance Battery Charger Battery Type and Capacity: 6V (3 cell) Lead Acid (5 AH) provide 8 hours of continuous operation....
Page 11 - Standard System Contents; AC Line Cord; Optional Equipment; Model 90100 TRACKER System Parts and Accessories
General Information Unpacking and Inspection 1 1-7 Standard System Contents • Model 35360A TRACKER Display • Model 35300A Detector • 15 m Detector to Display Interface Cable (37783-15) • AC Line Cord • Customization Software Kit (37827): Contains disk, cable, and adapters. Optional Equipment • Syste...
Page 13 - Section 2; Operation; Rear Panel Familiarization; Model 35360A TRACKER Display Rear Panel
Operation Introduction 2 2-1 Section 2 Operation 2.1 Introduction This section contains set-up and connection procedures for the Model 90100 TRACKER System in order to measure therapy beam characteristics. If you want to use build-up to simulate tissue, you can put plates of either "solid water&...
Page 14 - Turn the 35360A TRACKER Display OFF.
Model 90100 Operators Manual 2-2 WARNING WARNING CAUTION 2.2.1 Powering the System The Model 35360A TRACKER Display may be operated from either line or battery power. The line receptacle at the rear panel of the Model 35360A TRACKER Display mates with a 3-wire line cord to provide a connection to li...
Page 16 - Positioning the Model 35300A Detector in the Beam
Model 90100 Operators Manual 2-4 WARNING 4. Power can now be applied to the system. Wait for the Test/Detector screen shown below before pressing any keys. Reverse the above procedure to disconnect the interface cable from the 35300A Detector. Always turn the Model 35360A TRACKER Display's power off...
Page 18 - Operation Instructions
Model 90100 Operators Manual 2-6 Figure 2-5. Setup for 90- and 270-Degree Angles (NOTE: Build-up not shown for clarity) 2.4 Operation Instructions This section contains detailed instructions on the front panel operation of the Model 35360A TRACKER Display. The 35360A TRACKER Display front panel keys...
Page 20 - NOTE; Powering Down the Model 35360A TRACKER Display; Test/Detector Screen 1 - General Information
Model 90100 Operators Manual 2-8 NOTE 2.4.2 Powering Up the Model 35360A TRACKER Display Pressing the POWER button turns on the instrument. Initially, it runs self-tests, restores the temperature, pressure, air density correction factor, front panel gain factors and measurement units to their previo...
Page 23 - top
Operation Operation Instructions 2 2-11 NOTE NOTE The FPGF for the center ion chamber is displayed on the bottom line of the VFD. Use the UP and DOWN buttons to toggle the FPG annunciator on or off. The FPG annunciator in the upper right-hand corner of the display signifies that FPG corrections are ...
Page 24 - Factors Disabled
Model 90100 Operators Manual 2-12 NOTE Figure 2-18. An Absolute Rate Measurement With Air Density Corrections and the Front Panel Gain Factors Disabled Prior to making a dose measurement, press the RESET button to zero all ion chamber readings. Pressing this button has no affect when performing dose...
Page 25 - Table 2-1. Underrange and Overrange Conditions
Operation Operation Instructions 2 2-13 2.4.8.3 Underranging and Overranging Conditions The 35360A TRACKER Display displays an underrange indicator when a preset threshold has not yet been reached, and an overrange indicator when the electrometer’s maximum limit has been exceeded (see Figures 2-22 a...
Page 26 - Positions of the Battery and Bias Annunciators
Model 90100 Operators Manual 2-14 NOTE Figure 2-24 illustrates the locations of the annunciators on the VFD. The High Bias annunciator would appear in place of the Low Bias annunciator should this condition be detected. Figure 2-24. Positions of the Battery and Bias Annunciators See Section 4 for in...
Page 29 - Section 3; Theory of Operation; . The two main components of the system are; Overall Functional Description of the Model 35360A
Theory of Operation Introduction 3 3-1 Section 3 Theory of Operation 3.1 Introduction The Model 90100 TRACKER System is a radiation measurement system intended for use in quality assurance programs for high-energy accelerators and Co 60 . The two main components of the system are the Model 35300A De...
Page 32 - Table 3-1. Nominal Full Scale and Sensitivity in Electrical Units
Model 90100 Operators Manual 3-4 3.2.6 Serial Communications Port A computer interface has been provided in the form of a DCE configured RS-232 port. This port is configured for operation at 9600 baud and uses a standard Xon/Xoff handshaking protocol. The associated RJ-45 type connector is located o...
Page 33 - Air Density Corrections
Theory of Operation Overall Functional Description of the Model 35360A Tracker Display 3 3-5 Above values assume nominal electrical and radiological sensitivity, air density correction and front panel gain factors set to unity, and nominal value for the Display Units Conversion Factors. The followin...
Page 34 - Pressure Temperature; Basic Operating Equations
Model 90100 Operators Manual 3-6 Pressure Temperature mm Hg = inch Hg ∗ 25.4 K = (5/9) ∗ ( ° F -32) - 273.15 mm Hg = 760 ∗ (54,041 - feet ASL) / (54,041 + feet ASL) K = ° C + 273.15 mm Hg = 760 ∗ (16,472 - meters ASL) / (16,472 + meters ASL) mm Hg = mB ∗ 0.75006 mm Hg = hPa ∗ 0.75006 3.5 Basic Opera...
Page 35 - Basic Operating Quantities
Theory of Operation Basic Operating Quantities 3 3-7 3.6 Basic Operating Quantities Table 3-3. Basic Operation Quantities Quantity Description Units Comments I Current nC/Min Electrical current delivered to readout in response to radiation incident upon detector. Q Charge nC Electrical charge delive...
Page 37 - Section 4; Maintenance & Service
Maintenance & Service Introduction 4 4-1 WARNING Section 4 Maintenance & Service The Model 35360A TRACKER Display and 35300A Detector contain no internal operator serviceable parts. Disassembly of either unit could result in electrical shock. Always turn the 35360A TRACKER Display's power of...
Page 38 - Problem Figure
Model 90100 Operators Manual 4-2 4.2 Troubleshooting This system contains a number of troubleshooting procedures that may be executed by the user in the field. Each procedure is illustrated in the form of a flow chart and is directed toward resolving the specific symptom listed in the first block of...
Page 39 - 5360A TRACKER Display will not turn on (display will not light); No Display Flowchart
Maintenance & Service Troubleshooting 4 4-3 35360A TRACKER Display will not turn on (display will not light) Figure 4-1. No Display Flowchart No Yes No Yes No Yes Yes No Return 35360A TRACKER Display Replace 35360A TRACKER Fuses OK? Check AC line fuses at rear panel of 35360A TRACKER Display. AC...
Page 40 - Low Battery Indication at the Display; Low Battery Flowchart
Model 90100 Operators Manual 4-4 Low Battery Indication at the Display Figure 4-2 Low Battery Flowchart Yes No Yes Yes No Yes No No 35360A TRACKER Display is faulty and will require repair or replacement. Replace 35360A TRACKER Fuses OK? Check AC line fuses at rear panel of 35360A TRACKER Display. A...
Page 41 - Bias Error (LoBias or HiBias) Indication at the Display; Bias Error Flowchart
Maintenance & Service Troubleshooting 4 4-5 Bias Error (LoBias or HiBias) Indication at the Display Figure 4-3. Bias Error Flowchart No No Yes Yes No Yes The 35300A Detector is faulty and will require repair or replacement. Interface cable is faulty and will require repair or replacement. The bi...
Page 42 - Dose Measurement Value Drifts Prior to (or following) the Exposure; Leakage Flowchart
Model 90100 Operators Manual 4-6 Dose Measurement Value Drifts Prior to (or following) the Exposure Figure 4-4. Leakage Flowchart No Yes Yes No Yes Yes No Yes No No Yes No Clean 35360A TRACKER Display's interface connector via procedure given later in this section and The drift problem has been elim...
Page 43 - Dose Rate Measurement Zero Problem Flowchart; Line Fuse Replacement
Maintenance & Service Troubleshooting 4 4-7 WARNING Dose Rate Measurement Value Does Not Return to Zero in the Absence of a Radiation Beam Figure 5-5 Dose Rate Measurement Zero Problem Flowchart 4.3 Line Fuse Replacement Disconnect the 35360A TRACKER Display from other equipment along with the A...
Page 44 - Position the instrument on its display face.
Model 90100 Operators Manual 4-8 WARNING NOTE 1. Position the instrument on its display face. Figure 4-6. Model 35360A TRACKER Display Fuse Replacement 2. Remove the fuse drawer. With your fingernails, squeeze together the two ends of the fuse drawer and pull it out of its slot. 3. Replace the fuses...
Page 45 - Interface Connector Cleaning; Failure to do so may result in an electrical shock.; Cleaning the Instrument; To clean the exterior of the instrument, follow these steps:; Replaceable Parts Information
Maintenance & Service Interface Connector Cleaning 4 4-9 WARNING WARNING 4.4 Interface Connector Cleaning Always turn the 35360A TRACKER Display's power off prior to cleaning the interface connectors. Failure to do so may result in an electrical shock. The presence of dust or lint at the interfa...
Page 46 - Description Part; Recalibration & Repair Information / Technical Assistance
Model 90100 Operators Manual 4-10 Table 4-1. Replaceable Parts List Description Part Number Therapy Beam Evaluator 35300A Readout 35360A System Carrying Case 37780 Fuse 38476 AC Line Cord (USA) CO-19 AC Line Cord (Europe CEE 7/7) 86512060 AC Line Cord (UK & Ireland) 86583000 AC Line Cord (Denmar...
Page 47 - CAUTION; Section 5; Customization; The Customization software has the following requirements:
Customization Introduction 5 5-1 CAUTION Section 5 Customization 5.1 Introduction From the factory, the Model 35360A TRACKER Display arrives with valid settings allowing you to make measurements immediately. Should the need arise to change or modify any of the Items described below, the Customizatio...
Page 48 - Make a Working Disk
Model 90100 Operators Manual 5-2 CAUTION 5.2 Make a Working Disk Before using the Customization software, we recommend that a working disk be made. To make a working disk, simply copy all of the files from the disk to a blank, formatted disk. Store the original in a safe place. Always operate the Mo...
Page 50 - F1 Help (On-Line Help for using the Customization software)
Model 90100 Operators Manual 5-4 At the bottom of both screens, the Customization software displays the active keys and a short definition for each key. On the Display Customization screen, the serial number of the 35360A TRACKER Display, the firmware's version, and the current date appear. The date...
Page 51 - IMPORTANT; CUSTOMIZATION ITEMS; Power Down Interval
Customization Definitions 5 5-5 IMPORTANT 5.6 Definitions This section describes all of the Items that may be customized with the Customization software. It is split into two sections matching the two screens. CUSTOMIZATION ITEMS Power Down Interval The power down interval is used to specify the num...
Page 52 - DISPLAY CALIBRATION ITEMS; Setting the Electrometer Gains and Offsets
Model 90100 Operators Manual 5-6 The 35360A TRACKER Display supports four units of radiation. To convert between these units, use Table 5-1. This table was developed from accepted definitions of radiation units. While Table 5-1 shows sieverts and grays as equivalent, we acknowledge that other factor...
Page 53 - ADZ; ELECTROMETER GAINS; Current Gain factor using the equation below.
Customization Setting the Electrometer Gains and Offsets 5 5-7 WARNING ELECTROMETER OFFSET (ADZ) The procedure for setting the electrometer offsets for current and charge is the same. For every electrometer channel, repeat this procedure once. Turn the instrument off and disconnect the interface cab...
Page 54 - CHANGING THE POWER DOWN INTERVAL
Model 90100 Operators Manual 5-8 CAUTION where Measurement is the value on the 35360A TRACKER Display, and ICCF and DUCF are defined on page 60 and page 59 respectively. Enter the value calculated in Step 2 into the Display Calibration Items screen of the Customization software. Be sure to enter it ...
Page 55 - CHANGING THE ION CHAMBER CALIBRATION FACTOR UNITS; Enter the original value and press Enter.; CHANGING THE CURRENT GAIN; Move the cursor to the Current Gain for the Top chamber.
Customization Usage Examples 5 5-9 CAUTION CAUTION CHANGING THE ION CHAMBER CALIBRATION FACTOR UNITS This example changes the current value of a factory-set calibration factor. Make a note of the value BEFORE changing it so that it may be set to this value at the end of the example. 1. Press the Pag...
Page 56 - INPUT ERRORS; Value must be greater than zero; HARDWARE ERROR; Printer Error; COMMUNICATION ERRORS; Dosimeter is not connected
Model 90100 Operators Manual 5-10 5.9 Errors During program operations, errors may appear. The error messages are grouped into input errors, a hardware error, and communication errors. INPUT ERRORS Input errors may appear while changing Item values. When these errors occur, press any key to clear th...
Page 57 - Appendix; Appendix A; Installation of Pegs, Build-up and Retainer Rings
Appendix Using Build-Up A A-1 Appendix A Using Build-Up A.1 Build-Up, Peg, and Retainer Kit Options If you want to use build-up to simulate tissue, you can put plates of either "solid water" or acrylic (optional accessories) securely on one or both sides of the Model 35300A Detector. Build-u...
Page 58 - Attain Photons d; for Linear Accelerators
Model 90100 Operators Manual A-2 Recommended build-up for photons is given in Table A-1; recommended build-up for electrons is given in Table A-2. Table A-2 takes into account the 0.56 cm water-equivalent inherent in the 35300A Detector. Cobalt-60 radiation does not require any added build-up. Table...
Page 59 - Nominal
Appendix Using Build-Up A A-3 Table A-2. Recommended Amount of Build-up to Use With the Model 35300A Detector to Attain Electrons dmax for Linear Accelerators. 37051C-1 Plates are 0.44 cm Each Nominal Accelerator Potential, MeV Number of build-up plates (37051C-1) "Solid Water" thickness (cm...
