02 06 2006 HINS PMG - INDICO-FNAL (Indico)2 Jun 06 – G.A. HINS PMG 12 Analysis of HOM in SSR HINS...
Transcript of 02 06 2006 HINS PMG - INDICO-FNAL (Indico)2 Jun 06 – G.A. HINS PMG 12 Analysis of HOM in SSR HINS...
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HINS PMG
June 2nd, 2006
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2 Jun 06 – G.A. HINS PMG 2
HINSAgenda
Reactions to the AAC Meeting
Status of the MOUs
Technical Status
Issues
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2 Jun 06 – G.A. HINS PMG 3
HINSReactions to AAC MeetingCaveat: no official report received yet.
Reaction: Thanks !More on diagnostic later
Corlett (Chair)
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2 Jun 06 – G.A. HINS PMG 4
HINS
Yes.Agrees with our strategy in terms of
Schedule RiskCost Risk
Activities:Definition of Beam Diagnostic ElementsAllocation of Beam Diagnostic along Beam Line (P.O.)
Agreed:Especially true for SSR1 & SSR2FNAL “entrance”into new field
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2 Jun 06 – G.A. HINS PMG 5
HINSBeam Diagnostic ElementsElements:
Current transformers (CT): RFQ exit, MEBT exit, RT exit , between the cryostats, end of the linacBeam phase pick-up: after RT section, between the cryostats and at the end of linacInitial tune-up of the cavity field and phase
360 deg slow phase shifter in the transmission line of every cavity, electronically controllableUse RT and SC cavities as a phase pick-up
Beam profile wire scanners (or/and laser scanners)MEBT – at least 1 scanner, 4 scanners after RT cavities, at least 2 scanners at the end of linac
Beam loss monitors – about 20 – distribute along the linacInter-cryostat space should include
CTBPM, includes phase pick-upWire scanner
Hard so far to engage proper AD resources
~Integral Design of RF Cavities
BNL MOU
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2 Jun 06 – G.A. HINS PMG 6
HINSIs there space for Beam Diagnostic ?
MEBT (2.5 MeV) OK
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2 Jun 06 – G.A. HINS PMG 7
HINSIs there space for Beam Diagnostic ?
SSR1
SSR1
Add a Solenoid, increaseRT-SC transition space
The first SSR-1 works as a buncherThe second SSR1 is offIncrease the field level in all SSR1 by 10%, the surface field is 31 MV/mMinimal impact on beam quality, more studies are required to insure that no additional emittance growth or beam losses
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2 Jun 06 – G.A. HINS PMG 8
HINSIs there space for Beam Diagnostic ?Challenge:
Design integrated diagnostic boxDetector/Engineering Manpower issue
AD most logical source for Det.No resource engagement yet
TD most logical source for Eng.No resource available yet
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2 Jun 06 – G.A. HINS PMG 9
HINSRF StudiesHomeworkNo Progress
Right mix of “Scientist”+”RFEngineer” needed
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2 Jun 06 – G.A. HINS PMG 10
HINSSpoke Cavities Orientation
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2 Jun 06 – G.A. HINS PMG 11
HINSAmplitude of E-field, 1 mm offset
7.790E+06
7.791E+06
7.792E+067.793E+06
7.794E+06
7.795E+06
7.796E+06
7.797E+067.798E+067.799E+06
7.800E+06
85 87 89 91 93 95Z(mm)
Ez
X - OFFSETY - OFFSET
Amplitude of E-field, 1 mm offset
0.000E+00
1.000E+06
2.000E+06
3.000E+06
4.000E+06
5.000E+06
6.000E+06
7.000E+06
8.000E+06
9.000E+06
0 50 100 150 200 250 300Z(mm)
Ez
X - OFFSETY - OFFSET
0.03% asymmetry
Investigation of E-field asymmetry on beam dynamic
Electric field distribution in Single Spoke Resonator, β=0.22
Magnitude of electric field along z direction with 1 mm offset in X and Y axis's
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2 Jun 06 – G.A. HINS PMG 12
HINSAnalysis of HOM in SSRFirst Stage Program: ~4 months
MWS calculations of HOM frequencies, fields profile, R/Q, kick factor and Q external for monopole and dipole modes in SSR up to 3GHzInvestigations of modes trapping possibilities and
manufacturing imperfection With these HOM information, repeat the beam instability simulations and the HOM induced power analysis Resources: Gonin, Romanov, Ostroumov (ANL), etc.
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2 Jun 06 – G.A. HINS PMG 13
HINS
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2 Jun 06 – G.A. HINS PMG 14
HINSSpoke Cavity Slow TunerBuild Prototype during summer ‘06Assembly
tooling group @ IB2 (L.Elementi)Time: 1 week
TestingTest & Instrumentation Dept. (R.Carcagno)Meeting scheduled on Jun 6 to define competencies and requirementsTime:
Short period testing @ 4KAt least 1 month (if it works…) @ LN2 T
Where: stand 3 @ IB1When: likely October
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2 Jun 06 – G.A. HINS PMG 15
HINS
All legitimate questions, addressed by ongoing R&DResources: Nicol/Page for cool-down movements
Terechkine for cryoperm
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2 Jun 06 – G.A. HINS PMG 16
HINS
LBL MOULBL designed and developed LLRF for the SNS
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2 Jun 06 – G.A. HINS PMG 17
HINSStatus of the MOUsANL (700 k$) – Beam Simulation, SSR Construction
MOU signed at FNAL and ANL2 reqs in FNAL system
Req #187514, not yet a PO (?), signed by Pier, waiting for J. HallReq #187505, not yet a PO (?), signed by Pier, waiting for J. Hall
Technically, collaborating since “day-0”.
LBL (365 k$) – Electron Cloud, LLRF, Buncher Cav. designMOU signed at FNAL and LBL1 req in FNAL system
Req #187539, not yet a PO (?), signed by Pier, waiting for J. HallTechnically, ball in our park to define buncher cavities specs
BNL (800 k$) – Stripping foil, laser-wire scanner MOU agreed upon (Dave/Alberto work) on May 31st, being signed.
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2 Jun 06 – G.A. HINS PMG 18
HINS
Reactions to the AAC Meeting
Status of the MOUs
Technical Status
Issues
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2 Jun 06 – G.A. HINS PMG 19
HINSTechnical Status
Ion SourcePlasmatron setup in MS6, testing LEBTMagnetron in Linac, waiting for long-pulse PS
EE Resources in AD (Steve Hays to deliver in ~2 weeks since last January)Shutdown over, time to move !
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2 Jun 06 – G.A. HINS PMG 20
HINSTechnical StatusRFQ under procurement
“Procurement visit” to Accsysin May
Accsys to provide Vacuum Vessel calc. to FNAL codeDwgs to FNAL for sign off.End Flange/Vacuum flanges configurationsHold Points & Technical Contacts at FNAL
RFQ + Support + Tuning/commissioning at FNAL~522 k$, contract written, undergoing signature for re-approval of new cost (original was 500 k$)
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2 Jun 06 – G.A. HINS PMG 21
HINSTechnical StatusRT Prototype
Contract awarded (~40k$ for first cavity)Production Plan providedCopper procured, first Al test pieces machinedCavity at FNAL by end of August (RF in Meson needed at that time ! )PC to be procured in June.
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2 Jun 06 – G.A. HINS PMG 22
HINSMeson PreparationMockup Tunnel Waveguide Support
Klystron-Modulator Umbrella
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2 Jun 06 – G.A. HINS PMG 23
HINSISSUESPotential Interference with duration of Capture Cavity testing in Meson in present cave
Suggestion/indications they wish to stay for ~9 months Why ? No cryo ready in new-muon.
RFQ delivery by January 2007. Would like to refurbish area/install ion source ~Nov-Dec ’06
From HINS point of view can only allow ~6 of 9 months
Suggestion of using HINS modulator/pulse transformed (4 msec) for 1.3 GHz Klystron test
HINS need RF immediately forRF testing (325 MHz klystron, power distribution - now)Cavities Testing (RT cavities - Aug, RFQ - Jan, etc.)