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MICE RFCC Module Update Allan DeMello Lawrence Berkeley National Laboratory Oxford, UK July 7, 2011 July 7, 2011.

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Presentation on theme: "MICE RFCC Module Update Allan DeMello Lawrence Berkeley National Laboratory Oxford, UK July 7, 2011 July 7, 2011."— Presentation transcript:

1 MICE RFCC Module Update Allan DeMello Lawrence Berkeley National Laboratory Oxford, UK July 7, 2011 July 7, 2011

2 MICE RFCC Module – MICE Schedule Review at RAL, UK Page 2 Derun Li - Lawrence Berkeley National Lab – May 24, 2011 MICE RFCC Module Update – MICE CM30 at Oxford, UK Page 2 Allan DeMello- Lawrence Berkeley National Lab – July 7, 2011 Current Status of RFCC Module RF Cavities: All ten cavities (two spares) are currently at LBNL and four are measured (physically and for frequency) Received and accepted nine beryllium windows Ten ceramic RF windows received (4 at LBNL and 6 at University of Mississippi) Six full size tuner flexures will be fabricated using wire EDM (exploring vendor options) Components for 6 actuators are to be fabricated (not at UM) Measurements of the remaining six cavities to start in October Cavity inside surface mechanical smoothing and subsequent electropolishing to start in October at LBNL

3 MICE RFCC Module – MICE Schedule Review at RAL, UK Page 3 Derun Li - Lawrence Berkeley National Lab – May 24, 2011 MICE RFCC Module Update – MICE CM30 at Oxford, UK Page 3 Allan DeMello- Lawrence Berkeley National Lab – July 7, 2011 Current Status of RFCC Module RF Cavities (cont.): The cavities will be “tuned” to each other for a center frequency (10 cavities) by plastic deformation after frequency measurements are complete RF power coupler design and drawings are complete The single cavity vacuum vessel design has been sent out for fabrication quotes from Fermilab Fabrication of the single cavity vessel and associated components (e.g. RF couplers, RF tuners and actuators) will start soon Single cavity vessel testing will take place at MTA, Fermilab

4 MICE RFCC Module – MICE Schedule Review at RAL, UK Page 4 Derun Li - Lawrence Berkeley National Lab – May 24, 2011 MICE RFCC Module Update – MICE CM30 at Oxford, UK Page 4 Allan DeMello- Lawrence Berkeley National Lab – July 7, 2011 All Ten RF Cavities (Two Spares) at LBNL Fabrication set-up cavity One cavity on inspection stand Six cavities in their shipping crates; three cavities are stored in another location

5 MICE RFCC Module – MICE Schedule Review at RAL, UK Page 5 Derun Li - Lawrence Berkeley National Lab – May 24, 2011 MICE RFCC Module Update – MICE CM30 at Oxford, UK Page 5 Allan DeMello- Lawrence Berkeley National Lab – July 7, 2011 Beryllium Windows Eleven Beryllium windows have been fabricated Nine are Ti-N coated and accepted Two windows were rejected due to excessive distortion Two more will be made by Materion Electrofusion (formerly Brush- Wellman) with proposed improved fabrication technique

6 MICE RFCC Module – MICE Schedule Review at RAL, UK Page 6 Derun Li - Lawrence Berkeley National Lab – May 24, 2011 MICE RFCC Module Update – MICE CM30 at Oxford, UK Page 6 Allan DeMello- Lawrence Berkeley National Lab – July 7, 2011 Toshiba Ceramic RF Windows An integral part of RF power (loop) coupler Ten Toshiba ceramic RF windows received by University of Mississippi Four delivered to LBNL for inspection, six remain at UM

7 MICE RFCC Module – MICE Schedule Review at RAL, UK Page 7 Derun Li - Lawrence Berkeley National Lab – May 24, 2011 MICE RFCC Module Update – MICE CM30 at Oxford, UK Page 7 Allan DeMello- Lawrence Berkeley National Lab – July 7, 2011 RF Cavity Frequency Tuner Components Dual – action actuator Flexure tuner arm RF cavity

8 MICE RFCC Module – MICE Schedule Review at RAL, UK Page 8 Derun Li - Lawrence Berkeley National Lab – May 24, 2011 MICE RFCC Module Update – MICE CM30 at Oxford, UK Page 8 Allan DeMello- Lawrence Berkeley National Lab – July 7, 2011 Cavity Frequency Tuner Flexure One tuner flexure has been fabricated at the University of Mississippi It has arrived at LBNL and has been inspected Water-jet cutting of the part left an unacceptable taper of the part wall The search for a suitable EDM machining vendor has started Secondary machining may be done at UM

9 MICE RFCC Module – MICE Schedule Review at RAL, UK Page 9 Derun Li - Lawrence Berkeley National Lab – May 24, 2011 MICE RFCC Module Update – MICE CM30 at Oxford, UK Page 9 Allan DeMello- Lawrence Berkeley National Lab – July 7, 2011 Actuator Component Fabrication Center plate Lower piston Upper piston Lower support Due to machining equipment limitations the actuator mechanical components can not be fabricated at the University of Mississippi Options for the fabrication of the actuator mechanical components are being explored by LBNL

10 MICE RFCC Module – MICE Schedule Review at RAL, UK Page 10 Derun Li - Lawrence Berkeley National Lab – May 24, 2011 MICE RFCC Module Update – MICE CM30 at Oxford, UK Page 10 Allan DeMello- Lawrence Berkeley National Lab – July 7, 2011 Emerson ER3000 electronic pressure controllers have been tested at LBNL Pierrick Hanlet (Fermilab/IIT) will develop the control software in EPICS Cavity Tuner Control System

11 MICE RFCC Module – MICE Schedule Review at RAL, UK Page 11 Derun Li - Lawrence Berkeley National Lab – May 24, 2011 MICE RFCC Module Update – MICE CM30 at Oxford, UK Page 11 Allan DeMello- Lawrence Berkeley National Lab – July 7, 2011 Cavity Measurements Cavity Measurements Cavity physical measurement Cavity frequency measurement The remaining six cavities will be measured (both physically and for frequency) starting in October 2011 Physical measurements for the six remaining cavities expected to take approximately 1-1/2 weeks (60 hours)

12 MICE RFCC Module – MICE Schedule Review at RAL, UK Page 12 Derun Li - Lawrence Berkeley National Lab – May 24, 2011 MICE RFCC Module Update – MICE CM30 at Oxford, UK Page 12 Allan DeMello- Lawrence Berkeley National Lab – July 7, 2011 Cavity Electropolish at LBNL Cavity Electropolish at LBNL The inner surface of each cavity will be mechanically smoothed and then electropolished at LBNL using the techniques developed at JLab for the prototype cavity EP setup and testing will start in October of this year Electropolishing process will take approximately 3 days for each cavity or 6 weeks to complete all 10 cavities Cavity section viewJlab EP set-up

13 MICE RFCC Module – MICE Schedule Review at RAL, UK Page 13 Derun Li - Lawrence Berkeley National Lab – May 24, 2011 MICE RFCC Module Update – MICE CM30 at Oxford, UK Page 13 Allan DeMello- Lawrence Berkeley National Lab – July 7, 2011 Cavity Frequency Tuning Cavities must be “tuned” to each other for a center frequency (10 cavities) by plastic deformation if necessary Will be done at LBNL after frequency measurements and electropolishing are complete A 12 ton press will be used for adjusting the frequency Design of fixturing is ongoing Press from outside 12 ton press

14 MICE RFCC Module – MICE Schedule Review at RAL, UK Page 14 Derun Li - Lawrence Berkeley National Lab – May 24, 2011 MICE RFCC Module Update – MICE CM30 at Oxford, UK Page 14 Allan DeMello- Lawrence Berkeley National Lab – July 7, 2011 MICE RF power coupler design is complete and ready for fabrication Fabrication of the couplers will start soon Testing/experience of the prototype cavity at MTA: sparking at the coupler The coupler design will have a slightly increased gap spacing The sparking region can be Ti-N coated if necessary (will be tested at MTA using the prototype cavity) Adding diagnostics: arc detector at the coupler region RF Power (loop) Coupler

15 MICE RFCC Module – MICE Schedule Review at RAL, UK Page 15 Derun Li - Lawrence Berkeley National Lab – May 24, 2011 MICE RFCC Module Update – MICE CM30 at Oxford, UK Page 15 Allan DeMello- Lawrence Berkeley National Lab – July 7, 2011 Single RF Cavity Vacuum Vessel Single Cavity Vacuum Vessel Exploded View

16 MICE RFCC Module – MICE Schedule Review at RAL, UK Page 16 Derun Li - Lawrence Berkeley National Lab – May 24, 2011 MICE RFCC Module Update – MICE CM30 at Oxford, UK Page 16 Allan DeMello- Lawrence Berkeley National Lab – July 7, 2011 Single RF Cavity Vacuum Vessel Design drawings have been sent out to vendors for fabrication quote (from Fermilab) Fermilab has received quotes and will award fabrication contract soon Kept the same dimensions and features of the MICE RFCC vacuum vessel (as much as possible) One vessel designed to accommodate two types of MICE cavities (left and right) Single cavity vessel in Fermilab MTA configuration with the MUCOOL coupling coil

17 MICE RFCC Module – MICE Schedule Review at RAL, UK Page 17 Derun Li - Lawrence Berkeley National Lab – May 24, 2011 MICE RFCC Module Update – MICE CM30 at Oxford, UK Page 17 Allan DeMello- Lawrence Berkeley National Lab – July 7, 2011 Advantages of Single RF Cavity Vacuum Vessel for MICE Prior to having MICE RFCC module, the single cavity vessel will allow us to: Check engineering and mechanical design Test of the RF tuning system with 6 tuners and actuators on a cavity and verify the frequency tuning range Obtain hands-on experience on assembly and procedures – Cavity installation Beryllium windows RF couplers and connections Water cooling pipe connections Vacuum port and connections Tuners and actuator circuit – Aligning cavity with hexapod support struts – Vacuum vessel support and handling – Verify operation of the getter vacuum system Future LN operation Single cavity vessel in Fermilab MTA configuration with the MUCOOL coupling coil

18 MICE RFCC Module – MICE Schedule Review at RAL, UK Page 18 Derun Li - Lawrence Berkeley National Lab – May 24, 2011 MICE RFCC Module Update – MICE CM30 at Oxford, UK Page 18 Allan DeMello- Lawrence Berkeley National Lab – July 7, 2011 RFCC Future Work Vacuum Vessel:Vacuum Vessel: Vessel design is complete but needs to be updated to incorporate changes to the interface with the new coupling coil cryostat design Fixturing for the assembly process needs to be finalized and drawings for fabrication generated RFCC Module: RFCC Module: Finalize fixturing for module assembly and shipping for aligning the frequency tuners onto cavities for inserting the cavities into vacuum vessel shipping skid/tilt fixturing for shipping RFCC to RAL

19 MICE RFCC Module – MICE Schedule Review at RAL, UK Page 19 Derun Li - Lawrence Berkeley National Lab – May 24, 2011 MICE RFCC Module Update – MICE CM30 at Oxford, UK Page 19 Allan DeMello- Lawrence Berkeley National Lab – July 7, 2011 Plan and Schedule RFCC module schedule is mainly determined by the schedule of CC magnets and available funding See Derun Li’s and Steve Gourlay’s talks from yesterday RF cavity work has been on-hold to save resources for SS (highest priority) and CC magnets and will resume October 2011 RF cavities, post processing and associated accessory components are under control at LBNL Schedule of RFCC fabrication is being developed, testing of the 1 st CC cold mass dominates the current schedule

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