RFQ matcher chopperv 3 matcher SSR 0 May

RFQ + matcher + chopper_v 3 + matcher + SSR 0 May 24, 2010 Nick Perunov, Nikolay Solyak

RFQ + Match + Chopper + Match + SSR 0 (3 sigma envelopes)

Phase advances

Tracking in Trace. Win (100 k) for un-chopped beam

Losses (%) and (W)

Emittances (RMS)

Emittances (99%)

Energy growth

Longitudinal Halo Formation

Transversal Halo Formation

DISTRIBUTIONS ALONG BEAMLINE…

RFQ + MATCHER + CHOPPER + MATCHER + 4 CAV_SSR 0 + DIAGNOSTICS

Diagnostics

Matching to diagnostic line by last SSR 0 solenoid: Sol[-1]=3. 1 T (nominal ~3. 35 T) Ltotal = 20. 5 m

Matching to diagnostic line by two SSR 0 solenoids: Sol[-2]=0 T; Sol[-1]=2. 9 T. Ltotal = 20. 5 m

Elements needed for proposed configuration: RFQ to Chopper Matching section: (Lend 2. 2 m) • Two triplets (6 quads) – existing • Two buncher cavities – existing Chopper section (Lend=12. 8 m): • Eight triplets (6 quads) – New Design, procure • Four buncher cavities – New (copy of existing buncher? ) Procure • Four choppers – New Design, procure • Four dumps / diaphragms – New Design, procure Chopper-to-SSR 0 Matching section (Lend 13. 9 m): • Two SC solenoids – existing (RT solenoids) • One buncher cavities – New (copy of existing buncher? ) Procure SSR 0 -test CM (4 cav&sol. ) section (Lend 16. 5 m): Diagnostics section (Lend 21 m):