Related Manuals for Caen ELS BEST
Summary of Contents for Caen ELS BEST
- Page 1 BEST Beamline Enhanced Stabilization Technology User’s Manual All Rights Reserved © CAEN ELS s.r.l. Rev. 1.6 – March 2022...
- Page 2 This product is certified. CAEN ELS s.r.l. Via Vetraia, 11 55049 Viareggio (LU) – Italy Mail: info@caenels.com Web: www.caenels.com...
- Page 3 6 SFP Fiber Optic Transceivers - 4.25Gbps 850nm 3 V ~ 3.6 V LC Duplex Pluggable - FTLF8524P2BNV The BEST can be equipped with up to two TetrAMM devices and one PreDAC device. See their correspondent User’s Manuals for all the ordering codes available.
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Page 4: Table Of Contents
ENTRAL CONNECTIONS BEST ..............19 SYSTEM INTERCONNECTION BEST ................21 SYSTEM POWER 3. BEST CENTRAL UNIT OVERVIEW ........22 ................22 ONTROLLER CHEMATIC 4. BEST LOCAL GUI ................24 ..................... 24 INDOW 4.1.1 Graph XY ....................25 4.1.2 Feedback Control Panel ................26 4.1.3 PID Configuration Panel ................. - Page 5 Manual graphics changed September 25 2018 Manual Updated October 10 2019 Added EPICS documentation June 3 2020 Review of the text December 16 2021 March 22 2021 Major text revision and Update. BEST Local GUI screenshots taken from version 1.3-6...
- Page 6 User's Manual before any kind of operation. CAEN ELS s.r.l. reserves the right to change partially or entirely the contents of this Manual at any time and without giving any notice. Disposal of the Product The product must never be dumped in the Municipal Waste.
- Page 7 User’s Manual BEST Read over the instruction manual carefully before using the instrument. The following precautions should be strictly observed before using the BEST system: Do not use this product in any manner not WARNING specified by the manufacturer. The protective features of this product may be impaired if it is used in a manner not specified in this manual.
- Page 8 User’s Manual BEST The following table shows the general environmental requirements for a correct operation of the instrument: Environmental Conditions Requirements Operating Temperature 0°C to 45°C Operating Humidity 30% to 85% RH (non-condensing) Storage Temperature -10°C to 60°C Storage Humidity...
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Page 9: Introduction
Readout Actuator Figure 1: Simplified architecture of the BEST instrumentation suite. In order to control and stabilize the X-ray it is necessary to determinate the position and intensity of the beam. For this reason the first building block of the... - Page 10 User’s Manual Introduction BEST The current from the phBPM are acquired by the and sent to the TetrAMM Central Unit using a very low latency SFP connection. BEST Central Unit takes care of all the calculations to obtain the beam position BEST and intensity information.
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Page 11: Tetramm Overview
User’s Manual BEST Introduction TetrAMM overview The CAENels picoammeter is a 4-channel, 24-bit resolution, wide- TetrAMM bandwidth, wide input dynamic range picoammeter with an integrated optional bias voltage with bias ratings covering the ±30V up to ±4 kV range. It is composed of a... - Page 12 User’s Manual Introduction BEST Power Switch Power connector Trigger Interlocks and Power and connectors Reset Ethernet and SFP general Configuration button communication input/output LEDs interfaces connector Figure 3: rear view of a TetrAMM unit Central Unit overview BEST Central Unit is a 1U rack-mount system, which houses: BEST ...
- Page 13 Figure 5 Power Industrial PC BEST Display button USB ports Figure 4: Front view of a BEST Control and Interface Unit Dedicated 4 SFP connectors Industrial PC Power and 2 triggers connectors connector Figure 5: Rear view of a BEST Central Unit...
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Page 14: Predac Overview
User’s Manual Introduction BEST Overview PreDAC is a (up to) 4-channel, 21-bit resolution, wide-bandwidth Digital to PreDAC Analog Converter (DAC) which is especially designed for seamless operation within system. At the core of the system there is a high-speed 16-bit... - Page 15 User’s Manual BEST Introduction Figure 6: front view of a PreDAC unit Power Switch Power connector Trigger connectors Power and Interlocks and Configuration general LEDs Ethernet and SFP Reset input/output communication button connector interfaces Figure 7: rear view of a PreDAC unit...
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Page 16: Best System Installation
User’s Manual BEST System Installation BEST 2. BEST System Installation The following sections describe the various steps to interconnect the BEST instrumentation. 2.1 Connect the to the phBPM TetrAMM The first building block of the instrumentation suite is the BEST TetrAMM picoammeter. -
Page 17: Connect The Predac To The Beamline Optics
User’s Manual BEST BEST System Installation unit must be placed as close as possible to the analog current TetrAMM source (e.g. phBPM detector), in order to reduce cable lengths – i.e. cable capacitance – and to minimize consequent noise pick-up. It is also highly... -
Page 18: Best Central Unit Pc Connections
BNC cables to connect the outputs. PreDAC 2.3 BEST Central Unit PC connections Central Unit allows to monitor and configure the dedicated high speed BEST hardware using the local GUI, or remotely using EPICS. The software controls the dedicated hardware through the PCIe interface. -
Page 19: Best System Interconnection
User’s Manual BEST BEST System Installation 2.4 BEST system interconnection units have to be connected with the TetrAMM PreDAC BEST Central Unit, which controls the whole system. The communication between the units is obtained with a dedicated fast speed SFP optic interface. - Page 20 Figure 13 the right while SFP D is the one on the left). Reserved connectors for future use SFP D SFP C SFP B SFP A Dedicated 4 SFP connectors and 2 triggers Figure 13: BEST Control unit SFP connection...
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Page 21: Best System Power-Up
User’s Manual BEST BEST System Installation The order of the SFP connection is indeed very important for the Control unit BEST to communicate with the right device. The correct connections have to be as indicated hereafter: SFP A 1 TetrAMM –... -
Page 22: Best Central Unit Overview
User’s Manual BEST Central Unit Overview BEST 3. BEST Central Unit Overview 3.1 Controller Schematic provides a schematic representation of all the functional blocks Figure 15 implemented in the Central Unit. The first operation carried out by the Central Unit is to convert the currents readouts... - Page 23 User’s Manual BEST BEST Central Unit Overview Figure 15: BEST controller functional overview...
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Page 24: Best Local Gui
User’s Manual BEST 4. BEST Local GUI This chapter describes the main features of the Local GUI (Graphical User BEST Interface). To execute the program it is necessary to power on the Central BEST Unit. The Local GUI is already installed on the Linux OS. To run the BEST program simply click on the “... -
Page 25: Graph Xy
User’s Manual BEST BEST Local GUI Figure 16: BEST Local GUI main window Some specific settings should be changed and properly initialized according to the beamline configuration prior to starting the feedback system. What these setting are and where to find them will be clarified in the following sections. -
Page 26: Feedback Control Panel
User’s Manual BEST Local GUI BEST As described before, the PID control of beam position can be performed in different configurations. For example it is possible to control the beam in a single dimension (i.e. Y - dimension is regulated by the system and X is free) or in both dimensions (i.e. - Page 27 User’s Manual BEST BEST Local GUI The feedback control panel can show two tabs: The statistics section tab ( ), where the real-time mean value of Figure 19 the beam position (X-Y) and of the beam intensity (I ) and its related standard deviation are visualized;...
- Page 28 User’s Manual BEST Local GUI BEST Figure 21: Feedback control section The control section is composed by a “Heartbeat” indicator ( ), which shows Figure 20 the feedback status. There are four possible statuses: Feedback OFF – the feedback loop is disabled and on output there are only user defined offsets (user defined offset is the PID offset field in the PID configuration panel, see section 4.1.3).
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Page 29: Pid Configuration Panel
User’s Manual BEST BEST Local GUI Regulate – select which PID to enable, Source – select which BPM to use as source for the PID (“BPM Selector” block in Figure 15 DAC output – assign the PID output to the desired... - Page 30 User’s Manual BEST Local GUI BEST Figure 22: PID Parameters window The feedback actuation frequency (“Freq” in the PID configuration menu) is obtained by averaging the phBPM source signal (always sampled at 100 kHz) by an integer number of samples. For this reason, only a discrete range of frequencies ("Real freq"...
- Page 31 User’s Manual BEST BEST Local GUI Figure 23: PID Regulator architecture The “e ” value set the smallest error value which is taken into account for the PID calculation. All smaller values are trimmed to zero. In most cases this parameter...
- Page 32 TetrAMMs BEST Central Unit, the graph of the second BPM (usually in pink) is added to the same graph tab of the first BPM (usually in yellow), with except for the “Currents Graph Tab”, where and additional graph tab is created for the second BPM.
- Page 33 User’s Manual BEST BEST Local GUI DAC Graph Tab 4.1.4.3 Position Graph Tab 4.1.4.4 Intensity Graph Tab 4.1.4.5...
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Page 34: Login
User’s Manual BEST Local GUI BEST 4.2 Login This dialog allows access at different levels to the Local User Interface. BEST Having different access levels prevents inexperienced users from changing accidentally system critical settings. The user interface has three different access levels: ... -
Page 35: Beamline Configuration
User’s Manual BEST BEST Local GUI 4.3 Beamline Configuration This window allows calibrating and setting the system to exactly match the BEST actual beamline configuration. Its proper configuration is of paramount importance in order to insure a correct functionality of the system and a meaningful calibration of the units used to display data. -
Page 36: Bias Voltage - Optional
User’s Manual BEST Local GUI BEST where I and I are the acquired input channels currents values. RIGHT, BOTTOM LEFT Referring to and I are assigned to Ch1, Ch2, Ch3 Figure 25 RIGHT, BOTTOM LEFT are respectively “X scaling” and “Y scaling”... -
Page 37: Region Of Convergence And Region Of Interest
User’s Manual BEST BEST Local GUI Figure 26: Beamline Configuration window: bias voltage module settings. 4.4 Region of Convergence and Region of Interest Before enabling the PID controller, the user should set precisely the region of convergence and the region of interest areas. By clicking on Settings->ROC/ROI a... -
Page 38: Dac Manual Output Control
User’s Manual BEST Local GUI BEST Finally, the user can set a Beam-Off threshold value for the intensity readout of the phBPM (Beam Off Threshold). When the “Enable Beam Off check” input field is checked, the Central Unit will pause the feedback loop if the beam intensity goes below the defined threshold and it will automatically reactivate the feedback loop when the intensity goes back to values above the set threshold. -
Page 39: Picoammeter Configuration
User’s Manual BEST BEST Local GUI 4.2 Picoammeter Configuration Figure 29: Picoammeter configuration window. From Settings->Picoammeter Configuration the user can change the TetrAMM reading range (gain). Available options are “0” (higher current range) and “1” (lower current range). 4.3 SFP Info The “SFP Info”... -
Page 40: Frequency Analysis Tool
User’s Manual BEST Local GUI BEST 4.4 Frequency Analysis Tool The “Frequency Analysis Tool” window, which is accessible from Tools->Frequency Analysis Tool, allows the user to perform a dynamical frequency analysis of the system by determining its Bode plots (phase and amplitude). - Page 41 User’s Manual BEST BEST Local GUI Figure 31: Frequency analysis tool window...
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Page 42: Epics
EPICS allows integration of instruments with a given set of commands. In order to do so, BEST-EPICS-IOC is an open-source software available on the github platform. It is based on the functionalities offered by the library that... -
Page 43: Epics Ioc Integration
BEST EPICS 5.1 EPICS IOC Integration Start the Local User Interface BEST Local User Interface. Figure 32: Run the BEST In order to start the EPICS server, double-click the BEST EPICS IOC application (framed in blue in the picture above). - Page 44 Figure 33: Run the BEST The system shows that the procedure is completed, therefore EPICS control is allowed: EPICS server initialization. Figure 34: BEST By typing “dbl” it is possible to see the complete list of the BEST EPICS commands.
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Page 45: Best Login Using Epics
From the client side, assuming EPICS is correctly installed, the user has access to all the commands available (e.g. caput, caget, camonitor, etc.). 5.2 BEST login using EPICS As for the Local User Interface, also EPICS respects the login credentials BEST reported in section 0. -
Page 46: Controlling The Predac Output In Open Loop
PreDAC PreDAC controlled by software (i.e. from the Linux driver through PCIe). Lastly, the user can set the output voltage: PreDAC output voltage can be monitored from the Local User PreDAC BEST Interface: EPICS controlling output. Figure 36: BEST PreDAC... - Page 47 User’s Manual BEST EPICS 5.4 Controlling PreDAC output Closed Loop: The closed loop configuration is the default configuration where the feedback controller implemented in FPGA logic performs all the calculations in order to get the X/Y positions or intensity to the user defined setpoint.