Doub oubling the ling the F Frasc scati IN ti INFN FN B Beam T - PowerPoint PPT Presentation

Doub oubling the ling the F Frasc scati IN ti INFN FN B Beam T Test st Facility (B ility (BTF) TF) Bruno Buonomo 1 , Luca Foggetta 1 , Claudio Di Giulio 1 , Paolo Valente 2 1 INFN Laboratori Nazionali di Frascati 2 INFN Sezione di Roma 6 th Beam Telescopes and Test Beam Workshop 1 Zürich 16 – 19 Jan-2018

BTF in the TF in the D DA Φ NE E The BTF (Beam Test Facility) is part of the DA Φ NE accelerator complex: it is composed of a transfer line driven by a pulsed magnet allowing the diversion of electrons or positrons 6 th Beam Telescopes and Test Beam Workshop 2 Zürich 16 – 19 Jan-2018

LIN LINAC sign tional Design Operationa Ope Electron beam final energy 800 MeV 510 MeV Positron beam final energy 550 MeV 510 MeV RF frequency 2856 MHz Positron conversion energy 250 MeV 220 MeV Beam pulse rep. rate 1 to 50 Hz 1 to 50 Hz Beam macropulse length 10 nsec 1.4 to 40 nsec Gun current 8 A 8 A 1 mm Beam spot on positron 1 mm converter norm. Emittance (mm. mrad) < 1.5 1 (electron) 10 (positron) TITAN Beta (Ca,USA) 1995 rms Energy spread 0.5% 0.5% (electron) • S band LINear Accelerator ~60 m long (electron) 1.0% (positron) 1.0% (positron) Termoionic gun, 4x45 MW klystrons • SLED 15 waveguide 2/3 π SLAC type 5 A electron current on positron 5.2 A converter section 3m long. Max output electron current >150 mA 500 mA Max output positron current 36 mA 85 mA 90% 90% Trasport efficiency from capture section to linac end Accelerating structure SLAC-type, CG, 2 π /3 RF source 4 x 45 MWp sledded klystrons Upgrade pulse width: ~ 150 ns TH2128C 6 th Beam Telescopes and Test Beam Workshop 3 Zürich 16 – 19 Jan-2018

How the ow the B BTF w TF wor orks: s: The primary beam collide ≈ 2 x 0 , Cu produce a secondary beam # 10 10 Sim. 10 8 ∫∫ BTF 510 Exp. Energy [MeV] Hall e - /e+ + Linac Lina 6 th Beam Telescopes and Test Beam Workshop 4 Zürich 16 – 19 Jan-2018

The he B Beam-T -Test F st Facility ility The users in BTF are able to know in real time the beam parameter (type of particle, § energy, intensity, dimension and position). They have the accelerator complex services available for their setup: power supply, § network, gas, DAQ, Vacuum staff, cryogenic. § Usually BTF works in parasitic way respect to DA Φ NE collider. Parasi*c Dedicated Parametri With Cu target Without Cu target With Cu target Without Cu target e + or e - e + or e - e + or e - Par*cle (User ) (Dafne status) (User ) 250–730 (e - ) Energy (MeV) 25–500 510 25–700 (e - /e + ) 250–530 (e + ) Energy Resolu*on 1% at 500 MeV 0.5% 0.5% Variable from 10 to 49 1–49 Repe**on rate (Hz) (DAFNE status) (User) 1.5–40 (150) Pulse lenght (ns) 10 (User) Intensity 1–10 5 1–10 5 10 7 –1.5 10 10 10 3 –3 10 10 (par*cle/bunch) (Energy dependence) Energy dependence Max # of par*c. 3.125 10 10 part./s Beam size(mm) 0.5–25 (y) × 0.6–55 (x) Divergence (mrad) 1–1.5 6 th Beam Telescopes and Test Beam Workshop 5 Zürich 16 – 19 Jan-2018

BTF pr TF produc oducts: ts: • Electron o positron: BTF TF – Single particle – High Intensity • “Tagged” photon • Neutrons γ e - n e + E extracted from the LINAC http://www.lnf.infn.it/acceleratori/btf/ 6 th Beam Telescopes and Test Beam Workshop 6 Zürich 16 – 19 Jan-2018 10

BTF: Low Inte TF: Low Intensity nsity Single particle Energy spread mesured by(LYSO Calorimeter) Primary beam attenuated by a Copper § target Energy od Secondary from 500 up to § 30MeV The multiplicity follow the Poisson § distribution and user can select the mean value. Positron and electrons independent form § the primary beam. Best beam (07/03/2016): 440x420 μ m 2 [Mambo BGO] Seconda Se ondary ry beam be 2cm 2 MEDIPIX 6 th Beam Telescopes and Test Beam Workshop 7 Zürich 16 – 19 Jan-2018

Dia iagnostic gnostics a s and se nd servic vices s • Services: • Diagnostic: – 4 gas line – ICT – Water, air, HV, – Medipix/Fitpix network. – Hodoscope – Remote controlled – Silicon Tracker table(step up to 100 μ m, weight up to – Photon tag 200 Kg) – Neutron detectors – LNF mechanical – Flags support – Cams – DAFNE operator support – GEM – DAFNE technician – Calorimeters support 6 th Beam Telescopes and Test Beam Workshop 8 Zürich 16 – 19 Jan-2018

Why doub Why doubling the ling the B BTF: TF: We open 2 calls every year for experiments and tests beam and we need to reject about 50% of the requested beam time. For the next years we want provide an hall for experiments that require irradiation test or long beam time, as for example the PADME experiment for the dark sector research. And the new experimental hall where low intensity (up to 10 6 e - ) test beam on R&D detector beam time will be available. ✗ Average of 200 beam days/year, 25-30 experimental groups, 150-200 users ✗ Undergoing a major upg jor upgrade de in 2018: ✗ Split beam-line for serving two experimental areas ✗ Shielding of second hall ✗ LINAC consolidation ✗ New control room 6 th Beam Telescopes and Test Beam Workshop 9 Zürich 16 – 19 Jan-2018

CDR in 2 in 2016 2016 D A Φ N E T E C H N I C A L N O T E 1991 K K K K K K K K I N F N - L N F , A cce l e r a t o r D i v i s i o n F r a s c a t i , O c t . 29 , 1991 N o t e : L C - 2 D A Φ N E - L I N A C T E S T B E A M F . S a nn i b a l e a n d G . V i g n o l a I n t h i s n o t e t h e p o ss i b ili t y t o i n c l u d e a t e s t b e a m f a c ili t y , i n t h e D A Φ N E a cce l e r a t o r c o m p l e x , i s d i s c u ss e d . B e t w ee n t w o i n j ec t i o n s , t h e D A Φ N E - L I N A C c a n d e li v e r t h e e l ec t r o n b e a m i n t o a n e x i s t i n g h a ll ( s ee F i g . 1 ) . T h i s a r e a , p r e v i o u s l y u s e d a s " P i o n T e s t F a c ili t y " , h a s a n e x t e n s i o n o f a b o u t 100 m 2 , i t i s s u rr o u n d e d b y c o n c r e t e w a ll s , i t h a s 20 t o n c r a n e c a p a b ili t y a n d a n i n d e p e n d e n t e n t r a n ce . T h e e + e - D A Φ N E - L I N A C m a i n f e a t u r e s a r e : M a x E n e r gy 800 M e V C o n v e r s i o n E n e r gy 250 M e V R e p e t i t i o n r a t e 50 H z P u l s e d u r a t i o n 10 n s 150 m A ( 10 10 p a r t i c l e s ) M a x c u rr . / p u l s e T h e m a i n t a s k s , i n o r d e r t o p u t t h e t e s t b e a m i n o p e r a t i o n , a r e : - T r a n s f e r li n e a n d d i a g n o s t i c - C i v il E n g i n ee r i n g ( H o l e t h r o u g h t h e c o n c r e t e w a ll ) - S a f e t y s y s t e m u p g r a d i n g . T h e m a x i m u m i n t e n s i t y t h a t c a n b e u s e d , w i t h o u t r e i n f o r c i n g t h e e x - i s t i n g s h i e l d i n g , i s u n d e r e v a l u a t i o n . I n t h e f o ll o w i n g , w e d e s c r i b e t h e t r a n s p o r t o p t i c s a n d , i n s o m e m o r e d e t a il s , t h e " s i n g l e e l ec t r o n m o d e o f o p er a t i o n " w h i c h , i n o u r o p i n i o n , i s t h e m o s t i n t e r e s t i n g o n e f o r c a li b r a t i o n p u r p o s e s . The BTF TF sta staff and upg upgrade de te team Paolo V olo Vale lente nte – R Rom oma Bruno uno Buonom uonomo, Cla laudio D udio Di Giulio i Giulio, Luc Luca Fog oggetta tta, David Alesini, Maurizio Belli, Simone Bini, Bruno Bolli, Sergio Cantarella, Riccardo Ceccareli, Alberto Cecchinelli, Oreste Cerafogli, Renato Clementi, Enrico Di Pasquale, Alessandro Drago, Adolfo Esposito, Oscar Frasciello, Andrea Ghigo, Simona Incremona, Franco Iungo, Stefano Lauciani, Valerio Lollo, Roberto Mascio, Stefano Martelli, Luigi Pellegrino, Graziano Piermarini, Luis Antonio Rossi, Lucia Sabbatini, Claudio Sanelli, Franco Sardone, Giancarlo Sensolini, Serena Strabioli, Ruggero Ricci, Ugo Rotundo, Alessandro Stecchi, Angelo Stella, Raffaele Zarlenga – LN LNF F 6 th Beam Telescopes and Test Beam Workshop 10 Zürich 16 – 19 Jan-2018

BTF doub TF doubling sim ling simula ulations tions G4beamline MADX line2 s MAD-X 5.02.00 21/10/16 16.33.14 6 th Beam Telescopes and Test Beam Workshop 11 Zürich 16 – 19 Jan-2018

BTF doub TF doubling sim ling simula ulations tions MADX s MAD-X 5.02.00 11/01/18 16.07.41 s MAD-X 5.02.00 11/01/18 16.07.33 0.0065 40. 2.0 x (m) sigmax sigmay D x � x � y 0.0060 1.8 D 35. 0.0055 1.6 30. 0.0050 1.4 0.0045 25. LINE 1.2 0.0040 20. 1.0 0.0035 OLD 0.0030 0.8 15. 0.0025 0.6 0.0020 10. 0.4 0.0015 5. 0.2 0.0010 0.0 0.0 0.0005 0.0 5. 10. 15. 20. 25. 30. 35. 40. 0.0 5. 10. 15. 20. 25. 30. 35. 40. s (m) s (m) LINE1 s MAD-X 5.02.00 11/01/18 17.34.49 s MAD-X 5.02.00 11/01/18 17.34.38 45.0 2.0 0.0070 x (m) D x sigmax sigmay � x � y 0.0065 40.5 1.8 D 0.0060 36.0 1.6 0.0055 31.5 1.4 0.0050 0.0045 27.0 1.2 0.0040 22.5 1.0 0.0035 18.0 0.8 0.0030 0.0025 13.5 0.6 0.0020 9.0 0.4 0.0015 4.5 0.2 0.0010 0.0 0.0 0.0005 0.0 5. 10. 15. 20. 25. 30. 35. 40. 0.0 5. 10. 15. 20. 25. 30. 35. 40. s (m) s (m) 6 th Beam Telescopes and Test Beam Workshop 12 Zürich 16 – 19 Jan-2018