NSCL Operations and ReAcclerator Facility at MSU. Daniela Leitner Michigan State University

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1 NSCL Operations and ReAcclerator Facility at MSU Daniela Leitner Michigan State University

CCF Operations In Perspective NSCL is funded by NSF in support of a versatile user program with a historical average of 4500 hours of operation per year Average experiment requires 120 hours of

2 CCF Operations In Perspective NSCL is funded by NSF in support of a versatile user program with a historical average of 4500 hours of operation per year Average experiment requires 120 hours of primary beam and multiple rare isotope tunes FY2013: First GRETINA campaign: 5600hr of operation 24 successful experiments (MSU support of $4 M) FY2014: 3500 hours scheduled (funding limited) More than 1000 RIBs have been produced and more than 900 RIBs have been used in experiments CFF operations for users is funding limited Joint DNP Town Meetings on Nuclear Structure and Nuclear Astrophysics, August 21-23,

CCF Is The Only Facility In The World That Provides Fast,

LEBIT SECAR (design) JENSA ANASEN, FSU, SuN, 20 meter

Compression ANL Gas Stopper Cyclotron Stopper Cryogenic Gas

for future expansion of the science program K1200 Cyclotron

Proton detector SeGA S800 HiRA, CAESAR, LENDA, LH 2 target

Beams Gas Stopper Stopped beams Reaccelerated Beams

3 CCF Is The Only Facility In The World That Provides Fast, Stopped, And Reaccelerated Beams Of Rare Isotopes BECOLA LEBIT SECAR (design) JENSA ANASEN, FSU, SuN, 20 meter MoNA LISA Laser Ablation Minitrap SIPT Positron Polarimeter CFFD, JANUS. AT-TPC K500 Cyclotron Sweeper Magnet Momentum Compression ANL Gas Stopper Cyclotron Stopper Cryogenic Gas Stopper ReA3 Hall ReA6-12 Hall ReAccelerator Facility Space for future expansion of the science program K1200 Cyclotron A1900 Fragment Separator SEETF RFFS BCS NERO DDAS, CAESAR Proton detector SeGA S800 HiRA, CAESAR, LENDA, LH 2 target Triplex Plunger GRETINA (DOE) Cooler Buncher Helium Jet Fast Beams Gas Stopper Stopped beams Reaccelerated Beams Science-driven upgrades respond to articulated user needs Joint DNP Town Meetings on Nuclear Structure and Nuclear Astrophysics, August 21-23,

4 PAC-38 (Apr. 2014): 30 (of 48) proposals were approved for 4246 hours (6 experiments use reaccelerated beams, 4 use stopped beam facility, 20 use fast beams) New backlog is 6964 hrs NSCL PAC Statistics PAC 39 early FY2015 Pressure for beam time will increase in FY2015 when GRETINA will return to NSCL CFF operates well below capacity of 6,000 hours/year (funding limiting) Joint DNP Town Meetings on Nuclear Structure and Nuclear Astrophysics, August 21-23,

Equipment developed and commissioned by users can be

FRIB Stopped and ReAccelerated Beams Fragment Separator

commissioning and first science with beams from CCF FRIB

Linac NSF plays a critical stewardship role for

capabilities and user program while FRIB is built Joint

5 Equipment developed and commissioned by users can be used for research with beams from CCF now and later from FRIB Stopped and ReAccelerated Beams Fragment Separator (tie into the existing facility Fast Beams In-situ commissioning and first science with beams from CCF FRIB early completion: 12/2020 CD4 6/2022 Target Production Linac NSF plays a critical stewardship role for maintaining and evolving cutting edge research capabilities and user program while FRIB is built Joint DNP Town Meetings on Nuclear Structure and Nuclear Astrophysics, August 21-23,

NSCL Reaccelerator (ReA) Facility New Opportunity for NSCL Users EBIT CB RFQ CM1 CM2 Ongoing Developments Cooler Buncher (2015) ECR injector (2015/16) Prebuncher (2015/16) Rebuncher (2016) Cryogenic

6 NSCL Reaccelerator (ReA) Facility New Opportunity for NSCL Users EBIT CB RFQ CM1 CM2 Ongoing Developments Cooler Buncher (2015) ECR injector (2015/16) Prebuncher (2015/16) Rebuncher (2016) Cryogenic Gas Cell (2016/2017) Cycstopper (2016/17) CM3 SECAR ANASEN, SUN, LENDA, SeGA/ CAESAR JENSA ReA6 AT-TPC, M H B RFQ CM 1 Cryomodule 2 4.1% β=4.1% Cryomodule 3 β=8.5% Cryomodule 4 β=8.5% Cryomodule 5,6 β=8.5% 1+ n+ Future expansion ReA12 Mass separafon Gas Stopper CCF A1900 > 50 MeV/u Experiments ReA3 user program will start late 2014 Joint DNP Town Meetings on Nuclear Structure and Nuclear Astrophysics, August 21-23,

7 At-TPC Line ReA3 Hall Commissioned in 2013/2014 ANASEN: 7/2013 AT-TPC: 12/2013 JENSA: 3/3/2014 JENSA Gas Jet Target (SECAR) ANASEN Detector Joint DNP Town Meetings on Nuclear Structure and Nuclear Astrophysics, August 21-23,

Operational Highlight Reaccelerated Beams First Low Energy Rare

and separated by A1900 Purity for K-37 ~ 50% Linear Gas Cell Purity

] Reaccelerated 37 K 13 C 37 Cl 37 K + Energy [A.U.

8 Operational Highlight Reaccelerated Beams First Low Energy Rare Isotope Experiment In The Rea3 Hall (8/2013) 37 K produced by CCF and separated by A1900 Purity for K-37 ~ 50% Linear Gas Cell Purity for K-37 ~ 100% To ReA Analyzing Magnet 37 K 17+ Energy Loss [A.U.] Reaccelerated 37 K 13 C 37 Cl 37 K + Energy [A.U.] Joint DNP Town Meetings on Nuclear Structure and Nuclear Astrophysics, August 21-23,

9 Installation of Remaining ReA3 Cryomodule Integrated testing is ongoing, design goals have been demonstrated Joint DNP Town Meetings on Nuclear Structure and Nuclear Astrophysics, August 21-23, 2014" 9

10 High Energy LINAC Section ReA6-ReA12 Expansion can be done without interrupting the ReA3 Research Program EBIT CB RFQ CM1 CM2 ReA3 Low Energy Hall Commissioned 2013/2014 CM3 SECAR D-Line N4 Stopped beams A1900 ReA3 L-Line JANUS, ANASEN, SuN, CFFD. AT-TPC AT-TPC ReA12 High Energy Hall (conceptual design) ISLA GRETINA Nuclear Structure: E > 6 MeV/u enables the use of the full arsenal of tools for low energy nuclear science, Coulomb Excitation, inelastic reaction, fission, fission barriers, and fusion evaporation reactions.. Surrogate Reactions: Neutron captures Astrophysical reactions using ANC technique Science Case for ReA6-12 is compelling ReA12 Equipment & Beamlines TBD (user driven) Room for Expansion (Higher Energies) Joint DNP Town Meetings on Nuclear Structure and Nuclear Astrophysics, August 21-23, 2014" 10"

Proof of Principle for new ReA6 cryomodule has been progressing with MSU Funding With adequate Federal funding ReA6 -ReA12 can be built without impacting the ReA3 program Novel Bottom-Up design (more

11 Proof of Principle for new ReA6 cryomodule has been progressing with MSU Funding With adequate Federal funding ReA6 -ReA12 can be built without impacting the ReA3 program Novel Bottom-Up design (more cost effective, better alignment) Cavity performance has been demonstrated ReA3 can be upgraded one module at a time without impacting the science program 2K 3.85 W 4K FRIB (2K) ReA6 Goal (2014-proof of principle, 2 Cavities, 1 solenoid) Joint DNP Town Meetings on Nuclear Structure and Nuclear Astrophysics, August 21-23, 2014" 11"

12 ReA12 Energy Reach Joint DNP Town Meetings on Nuclear Structure and Nuclear Astrophysics, August 21-23, 2014" 12"

13 Summary NSCL is the nation s flagship user facility for rare isotope research with new cutting edge capabilities Demand for rare isotope beams (fast, stopped, and reaccelerated) is high NSCL currently operates well below capacity ReA3 provides a world-unique science capability for low energy rare isotope beams, ready for operations ReA12 energy upgrade has been a high priority for users with a compelling science case, but requires additional funds New instrumentation and tools can use CCF beams for research now and will benefit FRIB science program later Joint DNP Town Meetings on Nuclear Structure and Nuclear Astrophysics, August 21-23, 2014" 13"

14 Back-up Joint DNP Town Meetings on Nuclear Structure and Nuclear Astrophysics, August 21-23, 2014" 14

efficiency LINAC Beam rate capabilities 10 8 ions/sec Hybrid EBIS/T charge breeder High beam purity Low energy spread, short pulse length 1keV/u, 1nsec

15 ReΑ Concept: 3 Stages Q/A M H B RFQ CM 1 4.1% Cryomodule 2 β=4.1% Cryomodule 3 β=8.5% Cryomodule 4 β=8.5% Cryomodule 5,6 β=8.5% Mass separafon 1+ n+ Gas Stopper CCF A1900 > 50 MeV/u Experiments Requirements Ion efficiency for all elements > 20 % EBIT charge breeder + high efficiency LINAC Beam rate capabilities 10 8 ions/sec Hybrid EBIS/T charge breeder High beam purity Low energy spread, short pulse length 1keV/u, 1nsec A1900, EBIT CB, Q/A Multiharmonic external buncher and tight phase control in SRF linac Joint DNP Town Meetings on Nuclear Structure and Nuclear Astrophysics, August 21-23,

16 ReA12 optics design is starting/shielding calculations are being finalized for the accelerator Energy spread requirements Bunch lengths requirements Bunch spacing Y (mm) Vertical plane Y (mrad) Real Space N 12MeV/u Transverse Phase space N X (mm) Horizontal plane X (mm) Joint DNP Town Meetings on Nuclear Structure and Nuclear Astrophysics, August 21-23, 2014" 16"

17 Time structure from ReA Nominal pulse structure for 80.5 MHz is nsec nsec Currently exploring the option of pre-buncher between 600 EBIT & RFQ Prebunching the beam using 16.1MHz buncher (62.5 nsec spacing) Longitudinal Phase Plot ReA12 DEk(keV/u) Energy Spread DEk(keV/u) Longitudinal: Energy& Time Counts (arb.unit) 500 FWHM 0.52 nsec nsec N T (ns) Bunch Length N T (ns) Joint DNP Town Meetings on Nuclear Structure and Nuclear Astrophysics, August 21-23, 2014" 17"

Facility for Rare Isotope Beams and National Superconducting Cyclotron Laboratory Overview

Facility for Rare Isotope Beams and National Superconducting Cyclotron Laboratory Overview Paul Mantica, Deputy Laboratory Director and Deputy FRIB Project Manager 22 August 2015 This material is based