MICE MICE Target Mechanism Control Electronics Upgrade P J Smith – University of Sheffield James Leaver – Imperial College 2 nd March 2009.

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Presentation transcript:

MICE MICE Target Mechanism Control Electronics Upgrade P J Smith – University of Sheffield James Leaver – Imperial College 2 nd March 2009

MICE Implementation Plan The implementation of this upgrade can be broadly broken down into three stages. 1.Synthesize the controller module replicating its core functionality while ensuring that the system can be fully controlled via a remote interface. Bi- directional data flow to the host controller will be demonstrated. Interface the current analogue functionality to the USBDAQ via a specifically designed level converter board. 2.Create Daughter boards for the Analogue IO replicating their current functionality and adding additional control and error reporting features. Successfully integrate these boards with the USBDAQ. Bring the quadrature laser system under the control of the USBDAQ so that the laser power levels and interlocks are controlled with the USBDAQ board. 3.Integrate the Target DAQ onto a separate USBDAQ. 2 Mar 20092P J Smith - University of Sheffield

MICE Schedule The three stage plan constitutes a significant amount of work and the estimated timescales reflect this fact. Assuming that Paul Smith can spend ~100 % of his time on this project and that James Leaver can spend 50 % of his time on this project then the following timescales are estimated for the three stage implementation plan outlined in the previous section. Stage 1 - Replicate the digital controller & establish basic computer control of the target system - End of June 2009 Stage 2 - Design, build and implement the control for the analogue daughter-boards. Establish full computer control of the target system - End of December 2009 Stage 3 - Redesign of the Target DAQ - June Mar 20093P J Smith - University of Sheffield

MICE Costs The cost of the analogue boards and level converters are estimated as it is impossible to know the full cost of them until they have been designed and sent out for quotation. USBDAQ boards. 4 boards for stages 1 & 2 £1000 Level Converters£400 Daughter Boards (Analogue Functionality & EEPROM for Stage 2) £2000 USBDAQ boards for Stage 3£500 Daughter Cards for Stage 3£1000 Labour :P. Smith 18 months 100 % J. Leaver 18 months 50 % 2 Mar 20094P J Smith - University of Sheffield

MICE MICE Target Mechanism Capacitor Banks & PSU P J Smith – University of Sheffield Steve Griffiths – Daresbury Laboratories 2 nd March 2009

MICE Summary It is necessary to go to a lower voltage system wrt earth to protect the coils from failure due to electrical breakdown. Moving from (0  220 V) to (-110 V  +110 V ) This change to the power supply has required additional capacitor banks and capacitor charging units (CCUs) as discussed in previous presentations (See January 2009 review). 2 Mar 20096P J Smith - University of Sheffield

MICE Current Situation ISIS: Additional Capacitor Bank & CCU required. These have been built/procured. R78: Additional Capacitor Bank & CCU required. None yet built /procured Use Spare Sheffield Set? Sheffield: Additional Capacitor Bank & CCU Required for development of the control system. A second capacitor Bank has been built and modified (reversibly!) to match the other cap bank at Sheffield Additional CCU acquired 2 Mar 2009P J Smith - University of Sheffield7

MICE Issues 2 Mar 2009P J Smith - University of Sheffield8 The capacitor banks and Hex Bridge Circuits are different to the two systems at RAL Hex Bridge is an earlier prototype – Circuit behaves differently Capacitance of capacitor banks is smaller The system at Sheffield is therefore not suitable as a spare or a replacement for the systems at RAL but it is OK for development purposes. We definitely need to upgrade the R78 system so that it is identical to the primary system on ISIS because we cannot use the Sheffield system at RAL. Will the R78 system also serve as a spare to the primary system on ISIS? Should we consider upgrading the system at Sheffield to match the other two systems? (Cap banks AND/OR Hex Bridge) This additional work needs Scheduling – Comments?

MICE Additional Slides

MICE Additional Slide 1 Stage 1 (June 2009) To be able to enable/disable actuation of the target system To be able to set the actuation depth of the target system To be able to monitor the actual actuation depth being achieved To be able to set the relative timing of the target actuation with respect to the ISIS spill To be able to set the operating frequency of the target. (As some multiple of the ISIS trigger signal) 2 Mar 2009P J Smith - University of Sheffield10

MICE Additional Slide 2 Stage 2 (December 2009) The system will determine the operating frequency of ISIS (50 Hz or 40 Hz) and sets the primary target delay accordingly Enable Laser control for the quadrature system To be able to switch between auto/manual for the automated settings (eg. the gain on the optical amplifiers) and to be able to manually set various system parameters To be able to access an error log for the controller Diagnosis of system problems relayed to the user via a text box. To be able to see full history of target settings and dial in historical settings Some of the more advanced features would be accessible via sub-menus to prevent the main control screen from becoming too cluttered 2 Mar 2009P J Smith - University of Sheffield11

MICE Additional Slide 3 Stage 3 (June 2010) During stage 3 the target DAQ will be redesigned to remove any dependency of the system upon third party drivers and products. Then the target system will be fully integrated with the MICE EPICS and DATE system. Unless there are specific requests for changes, it is not foreseen that this stage will add any additional user functionality to the control GUI. 2 Mar 2009P J Smith - University of Sheffield12