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MICE RFCC Module Update Allan DeMello Lawrence Berkeley National Laboratory MAP Winter Collaboration Meeting at JLab, Virginia February 28, 2011.

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Presentation on theme: "MICE RFCC Module Update Allan DeMello Lawrence Berkeley National Laboratory MAP Winter Collaboration Meeting at JLab, Virginia February 28, 2011."— Presentation transcript:

1 MICE RFCC Module Update Allan DeMello Lawrence Berkeley National Laboratory MAP Winter Collaboration Meeting at JLab, Virginia February 28, 2011

2 MICE RFCC Module Update – MAP Winter Collaboration Meeting at JLab, Virginia Page 2 Allan DeMello - Lawrence Berkeley National Lab – February 28, 2011 MICE RFCC Module Update Overview RF Cavities RF Cavity Frequency Tuners Toshiba RF Coupler Windows RF Cavity Beryllium Windows Single Cavity Vacuum Vessel Changes to RFCC Module Support Frame Change in RFCC Module Length

3 MICE RFCC Module Update – MAP Winter Collaboration Meeting at JLab, Virginia Page 3 Allan DeMello - Lawrence Berkeley National Lab – February 28, 2011 All 10 RF Cavities are at LBNL Six cavities in their shipping crates Fabrication set-up cavity Cavity on inspection stand 3 cavities are stored in another location

4 MICE RFCC Module Update – MAP Winter Collaboration Meeting at JLab, Virginia Page 4 Allan DeMello - Lawrence Berkeley National Lab – February 28, 2011 RF Cavity Electro-polish The inside surface of each cavity needs to be electro-polished Electro-polish will be done at LBNL in a similar process to the Jlab electro- polish of the prototype cavity

5 MICE RFCC Module Update – MAP Winter Collaboration Meeting at JLab, Virginia Page 5 Allan DeMello - Lawrence Berkeley National Lab – February 28, 2011 RF Cavity Future Work Physical and frequency measurements will be performed on the remaining 5 cavities Electro-polish of the inside surface of each cavity remains to be done The cavities must be “tuned” to each other for best center frequency (10 cavities) by plastic deformation if necessary (will be done at LBNL)

6 MICE RFCC Module Update – MAP Winter Collaboration Meeting at JLab, Virginia Page 6 Allan DeMello - Lawrence Berkeley National Lab – February 28, 2011 RF Cavity Frequency Tuner Components Dual – action actuator Flexure tuner arm RF cavity

7 MICE RFCC Module Update – MAP Winter Collaboration Meeting at JLab, Virginia Page 7 Allan DeMello - Lawrence Berkeley National Lab – February 28, 2011 RF Cavity Frequency Tuner Flexure Six tuner flexures are being fabricated at the University of Mississippi (D. Summers and M. Reep)

8 MICE RFCC Module Update – MAP Winter Collaboration Meeting at JLab, Virginia Page 8 Allan DeMello - Lawrence Berkeley National Lab – February 28, 2011 MICE RF Cavity – Mechanical Design and Analysis Actuator Component Fabrication Center plate Lower piston Upper piston Lower support Actuator mechanical components (except bellows) for 6 actuators are being fabricated at University of Mississippi (D. Summers and M. Reep)

9 MICE RFCC Module Update – MAP Winter Collaboration Meeting at JLab, Virginia Page 9 Allan DeMello - Lawrence Berkeley National Lab – February 28, 2011 MICE RF Cavity – Mechanical Design and Analysis Actuator Bellows Center plate Lower piston Upper piston Lower support Sample bellows from a new vendor is at LBNL for testing New bellowsOld bellows

10 MICE RFCC Module Update – MAP Winter Collaboration Meeting at JLab, Virginia Page 10 Allan DeMello - Lawrence Berkeley National Lab – February 28, 2011 RF Cavity Tuner Control System Emerson ER3000 electronic pressure controllers have been sent to Pierrick Hanlet (Fermilab) for control software development

11 MICE RFCC Module Update – MAP Winter Collaboration Meeting at JLab, Virginia Page 11 Allan DeMello - Lawrence Berkeley National Lab – February 28, 2011 Toshiba RF Window 10 Toshiba RF windows ordered by University of Mississippi Delivery due at the end of February

12 MICE RFCC Module Update – MAP Winter Collaboration Meeting at JLab, Virginia Page 12 Allan DeMello - Lawrence Berkeley National Lab – February 28, 2011 RF Cavity Beryllium Window 11 Beryllium cavity windows have been fabricated 9 are coated 3 have been accepted from Brush Wellman 6 are being evaluated 2 may be rejected due to excessive distortion

13 MICE RFCC Module Update – MAP Winter Collaboration Meeting at JLab, Virginia Page 13 Allan DeMello - Lawrence Berkeley National Lab – February 28, 2011 RF Cavity Beryllium Window Distorted window Plot of the laser inspection machine data

14 MICE RFCC Module Update – MAP Winter Collaboration Meeting at JLab, Virginia Page 14 Allan DeMello - Lawrence Berkeley National Lab – February 28, 2011 RF Cavity Beryllium Window Inspection Fixed radius profiles of the Be window Radial profiles of the Be window

15 MICE RFCC Module Update – MAP Winter Collaboration Meeting at JLab, Virginia Page 15 Allan DeMello - Lawrence Berkeley National Lab – February 28, 2011 RF Cavity Beryllium Window Inspection Fixed radius profiles of the Be window Radial profiles of the Be window

16 MICE RFCC Module Update – MAP Winter Collaboration Meeting at JLab, Virginia Page 16 Allan DeMello - Lawrence Berkeley National Lab – February 28, 2011 Single RF Cavity Vacuum Vessel Design (at LBNL) is complete Drawings are nearing completion Kept the same dimensions and features of the RFCC (as much as possible) One vessel designed to accommodate two types of MICE cavities (left and right) Design review (to be organized by Fermilab) will take place soon The vessel and accessory components will soon be ready for fabrication (Fermilab to identify vendors and send out request for quotes)

17 MICE RFCC Module Update – MAP Winter Collaboration Meeting at JLab, Virginia Page 17 Allan DeMello - Lawrence Berkeley National Lab – February 28, 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

18 MICE RFCC Module Update – MAP Winter Collaboration Meeting at JLab, Virginia Page 18 Allan DeMello - Lawrence Berkeley National Lab – February 28, 2011 Single RF Cavity Vacuum Vessel for MuCool MTA beam height configuration on concrete block MTA configuration with the coupling coil

19 MICE RFCC Module Update – MAP Winter Collaboration Meeting at JLab, Virginia Page 19 Allan DeMello - Lawrence Berkeley National Lab – February 28, 2011 24mm thick shim plate Current height to bottom of frame pad Move Frame Mounting Plates 100mm RFCC module frame mounting plates moved inboard by 100mm

20 MICE RFCC Module Update – MAP Winter Collaboration Meeting at JLab, Virginia Page 20 Allan DeMello - Lawrence Berkeley National Lab – February 28, 2011 Support for the Coupling Coil 4 x 6 inch x 1/4 inch wall rectangular tube 8 leveling jack screws with a capacity of 7200-lb (3265-kg) each

21 MICE RFCC Module Update – MAP Winter Collaboration Meeting at JLab, Virginia Page 21 Allan DeMello - Lawrence Berkeley National Lab – February 28, 2011 Support for the Coupling Coil 4 x 6 inch x 1/4 inch wall rectangular tube Leveling Jack Screw with a capacity of 7200-lb (3265-kg) each Coupling coil removed

22 MICE RFCC Module Update – MAP Winter Collaboration Meeting at JLab, Virginia Page 22 Allan DeMello - Lawrence Berkeley National Lab – February 28, 2011 RF Coupler and Coupling Coil Clearance Scallop in coupling coil cryostat for the RF coupler Scallop in coupling coil cryostat forced a step in the thermal shield Step in thermal shield created an assembly problem

23 MICE RFCC Module Update – MAP Winter Collaboration Meeting at JLab, Virginia Page 23 Allan DeMello - Lawrence Berkeley National Lab – February 28, 2011 RF Coupler and Coupling Coil Clearance Original cryostat design with a step in the thermal shield to provide clearance for MLI This design created magnet assembly problems

24 MICE RFCC Module Update – MAP Winter Collaboration Meeting at JLab, Virginia Page 24 Allan DeMello - Lawrence Berkeley National Lab – February 28, 2011 RF Coupler and Coupling Coil Clearance Moving the cryostat wall away from the thermal shield provides more clearance for easier assembly

25 MICE RFCC Module Update – MAP Winter Collaboration Meeting at JLab, Virginia Page 25 Allan DeMello - Lawrence Berkeley National Lab – February 28, 2011 RFCC and Coupling Coil Change in Length Coupling coil cryostat width increased by 20 mm per side from 461mm to 501mm RFCC module length increased by 40mm from 1906mm to 1946mm Positions of the modules in the beamline are affected

26 MICE RFCC Module Update – MAP Winter Collaboration Meeting at JLab, Virginia Page 26 Allan DeMello - Lawrence Berkeley National Lab – February 28, 2011 Affect of Increased RFCC Length on Beamline Spectrometer solenoid and first AFC module No change of beamline length

27 MICE RFCC Module Update – MAP Winter Collaboration Meeting at JLab, Virginia Page 27 Allan DeMello - Lawrence Berkeley National Lab – February 28, 2011 Affect of Increased RFCC Length on Beamline Add first RFCC module which is widened by 20mm per side Beamline length is increased by 40 mm

28 MICE RFCC Module Update – MAP Winter Collaboration Meeting at JLab, Virginia Page 28 Allan DeMello - Lawrence Berkeley National Lab – February 28, 2011 Affect of Increased RFCC Length on Beamline The second RFCC module (after the second AFC module) adds another 40mm Beamline length is increased by 80 mm

29 MICE RFCC Module Update – MAP Winter Collaboration Meeting at JLab, Virginia Page 29 Allan DeMello - Lawrence Berkeley National Lab – February 28, 2011 Affect of Increased RFCC Length on Beamline Complete MICE cooling channel beamline Beamline length is increased by 80 mm

30 MICE RFCC Module Update – MAP Winter Collaboration Meeting at JLab, Virginia Page 30 Allan DeMello - Lawrence Berkeley National Lab – February 28, 2011 All modules after the first RFCC module are shifted down the beamline by 40mm All modules after the second RFCC module are shifted down the beamline by 80mm Analysis by Ulisse Bravar showed that the MICE cooling channel beam optics can be easily re- matched (MICE note: “Length Increase of the RFCC Module” Dec. 19, 2010) Increased RFCC Length on Beamline Summary

31 MICE RFCC Module Update – MAP Winter Collaboration Meeting at JLab, Virginia Page 31 Allan DeMello - Lawrence Berkeley National Lab – February 28, 2011 RFCC Progress Summary All 10 RF cavities are at LBNL Received nine beryllium windows Ten ceramic RF windows ordered Six full size tuner flexures are being fabricated Components for 6 actuators are being fabricated New bellows vendor has been identified and a sample bellows is at LBNL for testing Control system components have been shipped to Pierrick Hanlet (Fermilab) for control software development Physical measurement of the second 5 cavities needs to be done RF frequency measurements of the second 5 cavities needs to be done Cavity post-processing (surface cleaning and preparation for EP) to start this year at LBNL Electro-polishing of all 10 cavities needs to be done The single cavity vacuum vessel drawings are nearly complete and fabrication will start soon

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