Wire Scanners Doug Murray Overview Requirements and User

Wire Scanners Doug Murray • • • Overview Requirements and User Interaction Sub Assemblies and Control Overview Component and Control Details Schedule May 11, 2005 DOE Review - Control System Doug Murray 1 drm@slac. stanford. edu

Wire Scanners Overview • There will be 15 new wire scanners, based primarily on existing SLAC designs • There also 4 existing wire scanners in sectors 27 and 28 of the Linac DL 1 4 LI 21 3 LI 24 4 LI 27 1* May 11, 2005 DOE Review - Control System LI 28 3* LTU 4 Total 19 Doug Murray 2 drm@slac. stanford. edu

Wire Scanners - High Level Requirements and User Interaction Three very general Use Cases An operator wants to measure beam profile Automated high-level software wants to get profile information automatically, to calculate emittance or perform other tasks Engineering or Maintenance users want to install, commission, calibrate or repair Wire Scanners, and require access to specific scanner parameters that operators do not need May 11, 2005 DOE Review - Control System Doug Murray 3 drm@slac. stanford. edu

Requirements and User Interaction (2) WS positioning shall have a resolution of 5µm WS position shall be reproducible to 20 µm Unsolicited Wire motion (jitter) shall be <5µm WS shall have the ability to compensate for beam jitter of 5µm or more as measured by upstream BPMs May 11, 2005 DOE Review - Control System Doug Murray 4 drm@slac. stanford. edu

Wire Scanners - Mid Level Sub Assemblies and Control Overview Most WS will not have direct readout from the wires because of the beam energy and charge density per bunch All new WS will have the option of direct readout All WS will have downstream PMTs with appropriate scintillation or Cerenkov media to measure wire interaction with beam May 11, 2005 DOE Review - Control System Doug Murray 5 drm@slac. stanford. edu

Sub Assemblies and Control Overview (2) Position Measurement (LVDT or similar) Motor Beamline Limit Switches May 11, 2005 DOE Review - Control System Doug Murray 6 drm@slac. stanford. edu

Wire Scanners - Low Level Components and Control Detail Position Measurement Mechanism ADC Motor Controller EPICS IOC High Voltage Beam Trigger ADC Limit Switches Photomultiplie r May 11, 2005 DOE Review - Control System Doug Murray 7 drm@slac. stanford. edu

Components and Control Detail (2) IOCs based on mvme 5500 (or new mvme 3200) Motor controllers from Newport or Oregon Micro Distance measurement might not be adequate with LVDT; we will investigate other options ADC specs are forthcoming Software details are to be determined, pending other design details User Interface screens EPICS database records Scanner states and transitions May 11, 2005 DOE Review - Control System Doug Murray 8 drm@slac. stanford. edu

Wire Scanners - Schedule high level - preliminary May Jun Jul Aug Sep Oct Requirements and High Level Design Detailed Design Procure Prototype HW Prototype with existing hardware Prototype with new hardware Test and Document High level applications Remaining Procurement May 11, 2005 DOE Review - Control System Doug Murray 9 drm@slac. stanford. edu Nov

Collimators Doug Murray • • • Overview Requirements and User Interaction Sub Assemblies and Control Overview Component and Control Details Schedule May 11, 2005 DOE Review - Control System Doug Murray 10 drm@slac. stanford. edu

Collimators Overview • Collimation using movable jaws, usually in X. There will be at least one set for Y. • There are 7 sets of movable collimators BC 1 1 BC 2 1 LTU 5 May 11, 2005 DOE Review - Control System Total 7 Doug Murray 11 drm@slac. stanford. edu

Collimators - High Level Requirements and User Interaction Very general Use Cases An operator needs to clean up the beam profile during setup or machine tuning An operator needs to limit beam energy when setting up the bunch compressor areas High level applications want to adjust beam profiles automatically to accommodate beam measurements downstream Engineering or Maintenance users want to install, commission, calibrate or repair the collimators May 11, 2005 DOE Review - Control System Doug Murray 12 drm@slac. stanford. edu

Requirements and User Interaction (2) Collimator resolution is yet to be determined, assume each jaw shall have position resolution of 5µm Jaw position shall be reproducible to 20µm (TBD) The operator shall be able to adjust each jaw separately The operator shall be able to adjust the gap between the jaws as a single value, while keeping that gap centered The operator shall be able to adjust the position of the gap as a single value while the gap’s size remains constant May 11, 2005 DOE Review - Control System Doug Murray 13 drm@slac. stanford. edu

Sub Assemblies and Control Overview This early design has changed. There will be no integrated BPM behind the jaws, and no cavity in front. Limit Switches Beam Motor May 11, 2005 DOE Review - Control System Doug Murray 14 drm@slac. stanford. edu

Collimators - Low Level Components and Control Detail Position Measuring Mechanis m ADC EPICS IOC Motor Controller Limit Switches May 11, 2005 DOE Review - Control System Doug Murray 15 drm@slac. stanford. edu

Collimators - Schedule Jun Jul Aug Sep Oct Nov Requirements and High Level Design Detailed Design Procure Prototype HW Prototype with existing hardware Prototype with new hardware Test and Document High level applications Remaining Procurement May 11, 2005 DOE Review - Control System Doug Murray 16 drm@slac. stanford. edu Dec