Status of the Test Beam Line 1 DUMP
Status of the Test Beam Line 1 DUMP 8 m DFD 2. 0 m 16. 5 m 16 m DUMP F F D D F DFD D F D MP F DU D D F F FD LIL-ACS 22 m 1. 4 m Transport path D F F ITB 3. 0 m DF 22. 4 m F D FD DFD 2. 5 m TBTS D 1. 85 m DFD F 0. 75 DUMP TBL 6 m 42. 5 m S. Döbert, CLIC Meeting, 1. 6. 2007 F D D D F P DUM LIL-ACS 3. 0 m DF TL 2’ 2 m CALIFES Probe beam injector
Goals and Requirements o High energy spread beam transport, low losses (Bench mark simulations) o RF Power Production, Stability (End Energy <50%, 2. 6 GW of RF power) o Alignment (Test procedures for BBA) 100 microns alignment for PETS, test of CLIC alignment equipment) o Drive Beam Stability, Wake fields (no direct measurement of the wake fields) o ‘Realistic’ show case of a CLIC decelerator o Industrialization of complicated RF components
TBL-PETS Design Aperture: 23 mm 5. 1 MV/m deceleration (30 A) 150 MV output Power Frequency, GHz 11. 9954 R/Q, Ω 2030 V group/ C 0. 477 Q factor 7440
TBL (12 GHz ; 30 A; 23 mm aperture) Energy loss only e = 150 mm E = 150 Me. V I = 30 A DE = 0. 17*I cell = 1. 4 m b = cell*(2+sqrt(2)) I = 35 A I = 30 A I = 25 A P = 3. 3 GW P = 2. 4 GW P = 1. 7 GW Wext = 64 % Wext = 55 % Wext = 45 %
CLIC Decelerator vs TBL CLIC TBL E = 2. 37 Ge. V E = 0. 15 Ge. V I ~ 80 A I = 30 A P/pets ~ 140 MW P/pets = 150 MW Wext = 90 % Wext = 55 % (16 cells) Very similar PETS for both machines (only length is different), 30 A needed to produce nominal Power/PETS Wext = 80 % (23 cells) might be possible with some beam improvements and perfect compensation of wakefield effects
TBL beam dynamics highlights
TBL beam dynamics highlights Wakefield effects Misalignment and correction
Status 01/2007 o We have a conceptual design including schedule and cost ( See CTF 3 -Note-076) o New TBL-PETS frequency will be 12 GHz ( this decision makes the TBL-experiment more relevant for CLIC) o Detailed simulations started (see Erik’s talk) o Design and Prototyping of key components started (BPM, Movers and PETS) 1 DUMP 8 m DFD 2. 0 m 16. 5 m 16 m DUMP F D F FD D F D MP DU F D F 1. 4 m 42. 5 m 3. 0 m DF 22. 4 m F D DFD ITB Transport path F D 2. 5 m TBTS D D F 1. 85 m DFD F 0. 75 DUMP TBL 6 m D F F FD LIL-ACS 22 m F D D D F P DUM LIL-ACS 3. 0 m DF TL 2’ 2 m CALIFES Probe beam injector
Reduced plans for shutdown 2007/2008 o Because budget constraints revised plan necessary o Only one module to test the prototype elements 1 TBL DUMP 8 m DFD 2. 0 m 16. 5 m 16 m DUMP FD D F D 2. 5 m TBTS DFD F ITB 1. 4 m Transport path MP DU 42. 5 m 1. 85 m DFD 0. 75 DUMP F FD LIL-ACS 22 m 3. 0 m DF D D P DUM LIL-ACS 3. 0 m DF TL 2’ 2 m CALIFES Probe beam injector
TBL-cell RF-Load BPM PETS Quad Mover TBL cell length 140 cm PETS: active length max 80 cm 16 cells planned = 22. 4 m 23 mm aperture in PETS 24 mm max in Quads/BPM’s Ion Pump 100 cm 15 cm 25 cm 140 cm FODO lattice: b-max = 4. 72 m b-min= 0. 83 m m-cell = 90 deg
TBL 2007/2008 Prototype Module BPM Quads Dipole MTV WCM Steering 2 m BPM MTV To Test stand Total: ~6 m Quads, TL 2 BPR
Prototypes Quad moving table, Prototype finished
Prototypes PETS tank
Prototypes BPM
Tentative TBL-Schedule Jul-Dec 06 Jan-Mar 07 Define module , Apr-Jun 07 Jul-Sep 07 Oct-Dec 07 Fabrication of prototypes Diagnostics, Test of Prototypes 12 GHz PETS Jan-Mar 08 Apr-Jun 08 Install 1 Module Jul-Sep 08 Oct-Dec 08 Install a bit more ? Series production Jan-Mar 09 Apr-Sep 09 Install up to Jan-Mar 10 Apr-Jun 10 Run with Install Run with 8 PETS remaining 16 PETS 1. 2 GW 8 PETS 2. 4 GW Oct-Dec 09
Conclusions Ø With the current budget only prototyping can be done this year Ø A minimal program of testing one prototype module is feasible and will help a lot for the project. Prototypes of BPM, electronics, quad mover and PETS are being built by our collaborators Ø If the prototypes are successful and the budget in 2008 sufficient the final project is only slightly delayed
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