Department of Physics and Astronomy

3800 Finnerty Road

Victoria, BC V8P 5C2

Tel: 250­721­7700

15 December, 2017

To: Dr. Jonathan Bagger, Director, TRIUMF

The TRIUMF Policy and Planning Advisory Committee (PPAC) was asked to review proposals

and make recommendations as input to the five­year plan TRIUMF is developing for the period

2020­2025. PPAC consists of 22 scientists who represent TRIUMF member universities and the

major scientific communities ­ nuclear physics, particle physics, material and molecular science

and life sciences ­ represented in TRIUMF’s research portfolio. The committee membership is

given in the appendix.

TRIUMF issued a call for proposals in late May, 2017, and received 83 proposals by the

mid­October deadline. Given the large number of proposals and the broad range of science and

technology they cover, the PPAC committee formed a set of subcommittees with appropriate

disciplinary expertise. Detailed discussions of proposals within each subcommittee took place

in phone meetings in November. The full committee met at TRIUMF on November 24­25 to

consider each proposal and to formulate the recommendations given in this report. The

evaluations were based on a set of criteria:

Scientific importance, potential impact, fit with the TRIUMF vision and mission

Broader impacts ­ societal benefit, commercialization potential, training of

highly­qualified personnel

Value ­ cost/benefit, leveraging of external resources and/or existing infrastructure or

expertise

Strength and commitment of the proponent team

While the committee did not attempt to fit the proposals into a resource envelope, we did

consider the size and time structure of existing TRIUMF commitments that extend into the

2020­2025 period.

For some of the proposals received, external funding has already been secured. For many

others, external funding will be sought for capital equipment (e.g., via CFI or NSERC­RTI

requests) and/or operational support (e.g., via NSERC funding requests for post­docs and

students), or for the renewal of current support. In our evaluations we have assumed that the

external funding sought will be obtained; unless noted otherwise, we do not recommend that

TRIUMF attempt to cover shortfalls in external funding for these projects. Similarly, some

proposals are for participation in projects that are pending approval in key participating

countries; our recommendation is contingent on these approvals being obtained. We note that

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several proposals request BAE scientists or joint TRIUMF­university hires. These scientific

positions should be allocated to maximize the global benefit to TRIUMF’s mission, and a

comprehensive review of TRIUMF scientific staff positions is beyond the current PPAC

mandate. As a result, we do not recommend for or against specific requests for these

personnel.

Global recommendations Building on the success of previous programs and plans, TRIUMF is deeply committed to

ARIEL­II, a large, exciting project that will triple the availability of rare isotope beams and enable

increased scientific output and societal benefit. Realizing the promise of ARIEL, whose

construction will absorb a substantial fraction of the available resources in the Engineering and

Accelerator Divisions through 2023 and whose operations will be a major focus thereafter,

should be the highest priority. TRIUMF has also embarked on a new flagship initiative, the

Institute for Advanced Medical Isotopes (IAMI), with university and government partners. This

represents a substantial expansion of TRIUMF’s activities and impact in the life sciences.

These two initiatives are the solid foundations on which much of the future success of TRIUMF

will be built, and are strongly endorsed by PPAC. While these major new initiatives take shape,

it is essential to provide support for the continued flow of science from both on­site and off­site

programs as a cost­effective way to exploit past investments and maintain and grow the

scientific community crucial for TRIUMF’s success. We recommend that TRIUMF provide this

support with high priority.

We rank the proposals received below, grouped by topical area. Each proposal is categorized

as a “high”, “medium”, “low” or “potential” priority for the five­year plan 2020­2025, with

additional comments provided for clarity; no ordinal ranking is made within a priority bin. A

high­priority ranking was given to projects that PPAC judges to be essential due to their direct

impact on TRIUMF’s mission or to their crucial role in enabling that mission. Projects given a

medium priority are strongly endorsed by PPAC and form a broader set of initiatives that we feel

should be part of the five­year plan 2020­2025. Those projects given a low priority ranking

should be pursued only if doing so results in little or no perturbation to the main program. The

“potential” ranking is given in cases where the context (external project approval, funding or

timeline) for the proposal is highly uncertain; the priority of these projects should be reassessed

if that context changes significantly.

Recommendations on Life Science proposals TRIUMF can produce a wide range of medical isotopes, providing a capability unique in

Canada, and has potential to become a world leader in several areas. The new IAMI initiative

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builds on a long­standing, successful collaboration between TRIUMF, UBC and the BC Cancer

Agency that has advanced basic medical science and the treatment of disease through the use

of isotopes for imaging and therapy. Growing this area is an excellent way to further TRIUMF’s

vision to “lead in science, discovery and innovation, improving lives and building a better world.”

High priority:

Institute for Advanced Medical Isotopes

This flagship initiative is a global priority. It is expected that this project will be initiated, but not

yet completed, by 2020. It should be fully supported in the next five­year plan.

Radionuclide­based preclinical imaging at UBC/TRIUMF

Radionuclide­based and multi­modality neuroimaging at UBC/TRIUMF

These two proposals build on highly successful programs and have secured substantial external

funding, and are key partnerships that enable TRIUMF’s expertise in producing radionuclides to

be translated into the health science research ecosystem.

TRIUMF + TRIUMF Innovations + External Partnership to Refurbish TRIUMF’s IPF for

Thorium Target Irradiations

This represents a key opportunity to significantly increase the supply of 225Ac, an alpha­emitter

with great promise for radiotherapy applications. The identification of an external partner is a

key step in bringing this initiative to fruition.

Development and Installation of infrastructure for chemical waste processing of expired

ARIEL targets and the extraction of critical isotopes from irradiated target materials

This proposal builds expertise in handling the radioactive waste stream and also holds promise

for allowing significant quantities of useful isotopes to be recovered.

TRIUMF Radiochem Lab RCA005: Implementing and Maintaining GMP Protocols

Complying with regulatory statutes and maintaining the ability to produce radiopharmaceuticals

for human use is essential and pivotal to the collaborative role that TRIUMF plays with UBC and

other partners. This project is viewed as a necessary interim step until the GMP­certified

facilities and operations in IAMI are fully available. At that time the need for these facilities

should be reassessed.

Medium priority:

Proton therapy ­ Operation and Research

PPAC strongly supports the continued operation of the proton therapy facility, and recognizes

the need for facility improvements. The research aspect of this proposal is less compelling in

light of the much larger research programs in place at proton therapy centres in the U.S.A. and

in Europe.

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New and Improved Target Systems for Medical Isotopes

It is important that TRIUMF continue to develop new target systems to increase the efficiency of

PET and SPECT radioisotope production by medical cyclotrons in hospital facilities. TRIUMF

has world­class expertise in this area, having developed a viable 99mTc production technology,

which has been patented and seen initial commercial sales. This project will also benefit the

Canadian Nuclear Medicine community by producing important isotopes, such as 68Ga. It is

unclear if the requested lab space needs to come from existing space or could be part of the

IAMI building.

F­18 Labelled amino acids for oncology PET imaging

This research program is well motivated, builds on a strong publication record and has strong

connections with SFU and BCCA.

Beta­NMR Spectroscopy for biological applications

The development of betaNMR for liquid samples opens new research avenues. External

funding opportunities should be pursued for this project.

Low priority:

Perturbed Angular Correlation (PAC) of gamma­ray spectroscopy for biological

applications

PAC is a useful tool, but it was not clear that having a spectrometer at TRIUMF was essential;

external funding for this initiative should be pursued by the proponent.

Potential:

Feasability Study and proof of principle tests on 225Ac production from 226Ra via

(gamma,n) and (p,n) reactions

PPAC views this as a backup plan if the 225Ac production from thorium target irradiations runs

into difficulties. TRIUMF should ensure that this project is complementary to its main effort

involving Thorium target irradiation and does not compete for the same resources.

Recommendations on Molecular and Materials Science proposals

The MMS infrastructure for condensed matter science and chemistry includes North America’s

only SR facility, and the only ­NMR facility of its kind in the world. These facilities provide

unique and powerful experimental probes of advanced magnetic and superconducting

materials, liquids, chemical reactions, short­lived intermediates and free radicals, under normal

and extreme conditions. The MMS infrastructure is also sometimes used for subatomic physics

related initiatives and new applications, such as the study of biological samples and elemental

analysis of artifacts that are being proposed. The MMS facilities are accessed by a

multidisciplinary international scientific user community, and the knowledge gained from

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experiments is being used to promote new materials for quantum information and

communication technologies, innovative green chemistry and emergent energy technologies. If

carried out in 2020­2025 plan, the high­priority initiatives listed below would allow TRIUMF to

develop the CMMS into a world­leading facility that would compete with similar user­facilities

around the world in terms of scientific production.

High priority:

M15 Revitalization

The refurbishment of the highest­luminosity surface muon beamline needed for SR studies of

small samples provides a key science capability. High quality quantum materials are typically

only available as small samples.

Muonic X­ray spectrometer for elemental analysis of operating energy­storage devices

and cultural heritage objects

This project proposes to use negative muons from the new M9H beam line for non­destructive

elemental analysis, a technique that will overcome certain limitations of X­ray fluorescence

spectroscopy. This provides a unique capability in North America and will expand and diversify

the M9H user community.

Spin Echo Techniques using beta­detected Nuclear Magnetic Resonance and Expanded

Access to Polarised ion Beams

Unique infrastructure will facilitate studies in the field of spintronics. The new channel layout will

expand access to ­NMR and provide a beam port for nuclear physics and life science

experiments.

Expanding Muon Beam Facilities at TRIUMF

Adds high­momentum channel M9H and surface­muon channel M9A; CFI funding secured. This

re­establishes a source of polarized negative muons at TRIUMF and provides unmatched

capabilities for SR studies of quantum matter and chemistry in new combined regimes of

temperature, pressure and magnetic field. User­friendly infrastructure on M9A will allow an

expansion of the user base.

TRIUMF Centre for Molecular and Materials Science (CMMS) Facility Operations

PPAC recognizes the need to reinforce support for facility operations, with a goal of increasing

the user base, development, and scientific output by the addition of Facility Scientists; we

recommend that operational support be increased as resources allow.

Low priority:

8Li radiotracer diffusion apparatus

While the goal of using unpolarized 8Li lost in the polarizer apparatus makes sense, there are

other avenues for meeting the needs of experiments using 8Li diffusion.

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The TRIUMF­UBC­ICL PEPT Facility at TRIUMF

The potential for significant commercial revenue should be established prior to pursuing this

initiative.

Recommendations on Nuclear Physics proposals

The scientific priorities in this area are listed in the 2017­2021 Canadian subatomic physics

community long­range plan, www.subatomicphysics.ca , and can be broadly categorized as

understanding nuclear structure, exploring questions, such as the origin of elemental

abundances, at the interface of nuclear physics and astrophysics, and searching for new

physics in tests of fundamental symmetries. Nuclear Physics experiments currently take

advantage of the radioactive beams provided by the ISAC I and ISAC II accelerators. The use

of this existing instrumentation with the greater availability of RIB from ARIEL allows for an

enhanced scientific return on investment at little marginal cost, and is in general strongly

supported. Proposals to upgrade infrastructure or personnel support are evaluated in light of

the criteria listed previously.

High priority:

Precision nuclear physics experiments with ion traps at TITAN

EMMA, the ISAC­II Recoil Mass Spectrometer

Gamma­Ray Spectroscopy at ISAC

IRIS facility scientific program support

Beta­delayed neutron studies (part of NP­11 proposal)

These successful programs currently exploit ISAC I and ISAC II beams and their facilities, and

will take advantage of the increased beam time and variety of new species provided by ARIEL.

RI Beam experiments Physicist and Technician support

Providing support for RIB experiments is considered essential for the success of the

aforementioned high­priority proposals. PPAC recommends that existing support levels be

increased to the extent that resources allow.

Electron EDM with a laser­cooled francium atomic fountain

This initiative will take advantage of the higher availability of 211Fr from ARIEL and could have transformative implications in nuclear physics.

Medium priority:

Atomic parity non­conservation measurements with laser­trapped francium atoms

Beta decay correlations with TRIUMF’s Neutral Atom Trap TRINAT

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TUDA: Charged Particle Reaction Facility for Direct Measurements of Astrophysical

Reactions

DRAGON: TRIUMF’s Astrophysical Recoil Separator

These ongoing programs should continue as long as they have external support and funding,

produce high­quality results, and display high productivity.

EMMATrap – precision mass spectrometry of stopped reaction products from EMMA

Active target TPC detector for RI beam experiments

TI­STAR: The TIGRESS Silicon Tracker Array

A LaBr3 Array for DRAGON and other facilities at ISAC

These proposals are for enhanced instrumentation to provide improvements in measurement

precision or sensitivity to new processes. PPAC supports the intention of the proponents to

apply for CFI funding for these instruments.

Coupling the Polarizer beamline to the GRIFFIN spectrometer

Allows spin­polarized isotopes for studies in GRIFFIN at low marginal cost.

External User Support (ISAC)

Support for external users similar to that provided by other nuclear physics user facilities.

Low priority:

A Supersonic Gas Jet Target for ISAC

Storage Ring Physics (part of NP­11 proposal)

Laser Spectroscopy

These proposals should be pursued if doing so results in little or no perturbation to the main

program.

Potential:

Joint position (University­TRIUMF) for a Stellar Modeller (Nuclear Astrophysics)

The committee recognizes the potential impact of such a position, but would like to see how this

position fits with TRIUMF’s vision for an expansion of the theory group. Furthermore, the impact

of joint positions needs to be evaluated across the full range of TRIUMF’s scientific activities; as

indicated previously, this goes beyond the PPAC mandate.

Recommendations on Detector Development proposals Several proposals were submitted that involved renewing the infrastructure and augmenting the

personnel engaged in detector development. Some were closely tied to individual experimental

programs, while others represented more general detector R&D activities. PPAC has grouped

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these proposals together and strongly endorses a reinforced role for TRIUMF in detector R&D.

This expanded capability will support experimental needs across a range of disciplines, both at

TRIUMF and in the Canadian community. To accomplish this, TRIUMF needs a global strategy

for enhancing equipment and human resources and augmenting laboratory space. We

recommend that efforts be made, in coordination with NSERC MRS­funded university facilities

with overlapping mandates, to seek external funding for a distributed centre of excellence with

TRIUMF as the hub.

High priority:

Infrastructure for solid state detector development

This ambitious proposal would leverage expertise at TRIUMF, SFU, and Sherbrooke in solid

state detector development, both for photosensors and charged particle detectors. The

photosensor development aligns well with needs of the community and the capabilities at

TRIUMF. The charged particle (pixel) detector development would need to identify a niche to be

able to compete with well­established efforts elsewhere.

Detector Support for Forefront Technologies

Modernization of the equipment and expansion of the footprint of the Science and Technology

Department is necessary to support an augmented role of TRIUMF as the Canadian hub for

detector R&D. An expanded role for TRIUMF would also require an expansion of the human

resources of this department.

Medium priority:

Future Collider Detector Development

This proposal includes very general R&D and has good synergy with some other proposals; as

such, PPAC views this as part of a general request for enhanced detector development facilities

at TRIUMF rather than a proposal for a specific endeavour.

Global Argon­Based Dark Matter Program

This proposal aims to support the liquid­argon­based dark matter detectors. The major

requested TRIUMF contributions, in photosensor development, electronics and DAQ, are

applicable to a broader set of projects and are viewed by PPAC as general detector

development.

Enhanced Online Data Processing

Provide a computing hardware expert to support online data processing using GPUs. TRIUMF

can build on existing trigger and DAQ expertise to provide support to a wide range of

experiments.

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Recommendations on Particle Physics proposals

Subatomic physics tackles some of the fundamental questions of our universe. Recently,

significant progress has been made by experiments with large Canadian participation and

leadership in revealing the fundamental nature of matter (e.g., the discovery of the Higgs boson

and revealing the nature of neutrinos). Many of these endeavours are necessarily international

in nature. A balanced approach is required in the 5YP plan to take TRIUMF to the world as well

as to bring the world to TRIUMF. Many projects have seen significant investments that will only

come to fruition in the next 5YP; TRIUMF should remain a significant partner in these

endeavours. The recommendations made here are consistent with the priorities of the

Canadian subatomic physics community as listed in the 2017­2021 long­range plan,

www.subatomicphysics.ca .

High priority:

Hyper­Kamiokande project

A flagship neutrino experiment that builds on the SuperK and T2K projects, with strong

Canadian interest in the near detector and neutrino beamline. This is a project of high scientific

value. We advocate a growth of the team nationally to enable the success of the project.

Search for neutrinoless double­beta decays in Xe­136 with nEXO

A flagship neutrinoless double­beta decay experiment with a strong Canadian team; pending

approval by U.S. The proposed photosensor development is a good fit to TRIUMF expertise

and priorities.

HALO­1kT supernova neutrino detector

A scientifically compelling opportunity at low cost. The request for DAQ support falls well within

the scope of TRIUMF expertise.

The ATLAS Experiment at the LHC

A flagship experiment at CERN with strong Canadian participation and leadership; requests

support for furthering HL­LHC­related upgrades and continuing TRIUMF support for Tier­I

computing centre operations.

ALPHA Antihydrogen Symmetry Tests and Emerging “Quantum Sensing” Techniques for

Fundamental Physics

A continuation of the successful antimatter research program at CERN with ALPHA­2, ALPHA­g

and with a new initiative for an atomic fountain. The atomic fountain is a promising and powerful

tool; it will require R&D to demonstrate success, but has high potential for impact in this and

other areas of science. To fully realise this ambitious proposal, the ALPHA Canada team will

need to recruit new members.

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Medium priority:

Engineering and Technical Support for the MOLLER and P2 Experiments at Jefferson

Laboratory and Mainz (Germany)

A well­motivated electroweak precision measurements by a solid Canadian team, with a

reasonable request for technical support from TRIUMF. Good synergy between these two

experiments and with other projects at TRIUMF.

Measurements of Rare Decays and Searches for Hidden Sector Particles

The NA62 kaon experiment at CERN, an on­going project with strong scientific relevance, is

considering an extension in running time. The Canadian team has a long­standing track record

of excellence in rare decay experiments, but may need to grow to fully realise the proposed

contributions.

Ba­ion extraction for a future neutrinoless double­beta decay experiment using Xe­136

R&D project aimed at identifying the 136Ba++ daughter of 136Xe decay; could have large

scientific impact if successful. There is a natural overlap with TRIUMF expertise in ion trapping.

Ultracold Neutron Facility and nEDM Experiment Support

This is a new facility with high­profile experimental goals. It is an ambitious and challenging

project that would benefit from a larger team both nationally and internationally. The needs for

liquid He from UCN and the CMMS facility should be considered with high priority and a

cost­effective solution pursued.

Low priority:

Data Science at TRIUMF

The data science landscape in both industry and academia is growing very rapidly. It is hard to

see how a small contribution from TRIUMF in this area can have large impact; it may be more

effective for TRIUMF to pursue connections through its university partners.

Potential:

Canadian detector contributions to the future Electron Ion Collider

The EIC would be a very large international project. Neither the time­scale nor the likelihood of

approval are known well at this point; it could be a program in the future.

Pacific Neutrino Project (PNP)

This is an interesting potential opportunity for a new Canadian facility that builds on existing

infrastructure; currently they are characterizing the optical properties of the proposed site and

the potential scientific reach.

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E­linac production of weakly­coupled MeV­mass particles

A proposed search for dark photons produced using the e­linac beam ;may require substantial,

dedicated beamtime with cyclotron off to limit backgrounds. The science is compelling, but

further refinement is needed to determine if a competitive experiment could be mounted within

an acceptable beam­time (e­linac and cyclotron) envelope.

Recommendations on Theory and Education proposals

The current theory department (TD) engages in nuclear and particle physics research and

provides intellectual guidance to experimental research activities at TRIUMF. TD also offers

excellent HQP training by organizing seminars, visitor programs, and a series of annual

workshops. Two proposals were submitted by TD, and two for academic initiatives.

High priority:

Theory Department continuing effort

The TD has an excellent record of scientific productivity and impact and of HQP training.

Maintaining the full strength of the TD is recommended.

TRIUMF Visitor and Academic/HQP Training Program

PPAC recognizes value in attracting both long­ and short­term visitors to TRIUMF; this initiative

should be pursued at a modest level and adjusted as experience is gained. If successful, it will

enhance TRIUMF’s role in global research activities. PPAC also supports a strong role for

TRIUMF in education, and recommends that detailed planning and consultation be done to

maximize the value for both TRIUMF and their Member University partners.

Medium priority:

Accelerator Science Research Program

As indicated above, PPAC supports a strong role for TRIUMF in education; this initiative should

be pursued provided that university partners are identified.

Low priority:

Development of the Theory Department

An enlarged theory department could bring great value to TRIUMF. PPAC recommends that a

vision for the role of the department and its relation to the experimental program and the

broader theory community be further developed before planning new hires. This should include

consideration of other research areas such as traditional AMO, material science, and/or

condensed matter physics.

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Recommendations on Accelerator proposals The accelerator infrastructure and expertise available at TRIUMF is unique in Canada, and

enables scientific opportunities that are world­leading in several areas. The ability of TRIUMF to

produce primary and secondary beams of high intensity and availability for a wide range of end

users is the premise on which tens of millions of dollars in project funding have been awarded,

in areas across the spectrum of life sciences, molecular and materials science, and nuclear and

particle physics. These awards attest to the excitement of the science enabled by TRIUMF

beams, and promise a bright future for the lab.

Delivering on that promise relies on the completion of the ARIEL facility, which will absorb the

majority of the personnel in the Engineering and Accelerator Divisions through mid­2023. It also

relies on continuing beam delivery from the cyclotron and associated beamlines, and in ISAC I

and ISAC II. In some cases, this continued beam availability, along with the science it enables,

is jeopardized by aging infrastructure that must be renewed or upgraded.

In light of the considerations above, PPAC has prioritized ARIEL completion and the work

needed to keep beam and science flowing from existing accelerator infrastructure over

potentially exciting new initiatives. Some of these new initiatives may well be good choices for

enhancing TRIUMF facilities and capabilities, but the timescale and resource footprint

associated with delivering on existing commitments suggests that they might better be seen as

potential candidates for inclusion in the 2025­2030 five year plan.

High priority:

ARIEL II ­ Advanced Rare Isotope Laboratory

As indicated previously, this forms a pillar of the TRIUMF infrastructure and its completion and

exploitation are central to TRIUMF’s mission.

BL1A Refurbishment During Standard Shutdown Periods with Limited Rad­waste

This beamline feeds a substantial user base, which includes new CFI initiatives in CMMS and

UCN and the PIF/NIF, where 225Ac production is planned; its failure represents a huge risk to

the delivery of both science and broader benefits. PPAC recommends strongly that the

necessary refurbishments proceed with high priority.

Superconducting RF Cavity Processing Research

The degradation in SRF cavity performance (Q­disease) has serious operational consequences,

and efforts to understand and mitigate this degradation should proceed with high priority.

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ISAC TRILIS (laser ion source) upgrade

ISAC Polarizer Laser System Upgrade

ISAC Polarizer Beam Line Upgrade

These initiatives represent modest investments to maximize the science output of ISAC in the

ARIEL era.

Rare isotope beam delivery developments

Modernization of tuning and software control systems is a sensible way of improving operational

efficiency, which is a priority for delivering 9000 hours of radioactive ion beams.

ISAC Target Hall Consolidation

Refurbishment of ISAC target modules and design of a new target are essential for reliable

operation, as target failures present a real risk to research output.

Cyclotron upgrade to >400 μA

Maintaining delivery rates on existing proton beam lines is essential for some Science

programs. In anticipation of supplying protons to the new ARIEL target, the current limit on the

cyclotron should be upgraded. However, this can be done in an incremental fashion once the

resources required to build ARIEL­II are freed up.

Canadian Contribution to CERN Hi­Lumi Upgrade – Crab Cavity Cryomodules

This project leverages substantial federal support and is the main Canadian contribution to

CERN­LHC upgrades. The proposal ties in well with the current expertise of TRIUMF while at

the same time enriching TRIUMF’s knowledge base in these areas.

Medium priority:

ARIEL ­ second accelerator path

Allows simultaneous delivery of two re­accelerated RIBs and extends capability for accelerating

high­mass isotopes. This second path would allow more flexible scheduling of experiments and

allow more than 3000 hours (out of 9000) to go to medium­ or high­energy experiments, which

may be desirable. The competition for resources and the impact of deploying the infrastructure

on beam delivery needs to be carefully considered.

E­linac Recirculation Ring

The Second Accelerator Cryomodule for ARIEL e­Linac

These two proposals were viewed as related. The enhancement of e­linac energy, a feature of

both, brings only modest benefit to RIB production, but provides headroom if Q­disease

continues to degrade SRF cavity performance. The recirculation loop provides opportunities for

a photon source, but the user community needs to be identified. The second cryomodule

provides redundancy in case of module failure. As operational experience is gained with the

e­linac, the benefits and risks should become clearer.

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RILIS ionization scheme development

A modest investment here enables enhanced science output; if ion beams achievable with this

method are tied to high priority science objectives, this proposal should rise in priority.

Target and ion source development for radioactive ion beam production

The development of RIB targets for high intensity proton and electron beams is a high priority,

and developing an offline test stand is strongly supported by PPAC. The request for diagnostic

equipment should account for the availability of related infrastructure at SFU and UBC.

ISAC ­I beamline restructuring

The optimization of which experiments are able to take beam simultaneously in the ARIEL era

should be viewed on a cost­benefit basis; the potential gain achievable should be specified

before embarking on a more extensive restructuring exercise.

Low priority:

Design Study for TR­100: SC Cyclotron for Commercial Isotope Production

The proposal targets a potential commercial niche in the market for SC cyclotrons used in

medical isotope production. For this to proceed, the business case for this needs to be better

established, and a commercial partner identified early in the process.

TRIUMF electron linac based THz source

This may be an interesting future direction, but this new user community needs to be engaged

(e.g. in a dedicated workshop) prior to investing TRIUMF resources.

Development of a photo gun for e­linac

The main motivation for this is to enable a THz source; unless a clear need to increase the

electron source brightness is identified, this development is not urgent.

HL­LHC Beam­Beam Studies

This modest proposal (part of the proponent’s time) builds on pre­existing TRIUMF expertise

and continues the practise of exchange of knowledge between CERN and TRIUMF. However

the scope of the project, beam­beam studies for HL­LHC, is not clearly defined at this stage and

the benefits of this activity to TRIUMF are not completely self­evident.

Potential:

TriSR@ISAC

This marks a potential avenue for future development; the planned workshop to explore user

interest in this facility is a first step in evaluating the scientific merit.

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Summary The TRIUMF Policy and Planning Advisory Committee was asked to prioritize 83 proposals as

input to the formulation of the 2020­2025 five­year plan. This exercise was challenging due to

inherent uncertainties in relevant external factors and the wide range of scientific and technical

areas spanned by the proposals. While we did not attempt to constrain our rankings to fall

within a specific resource envelope, the significant demands on TRIUMF personnel resources in

the 2020­2025 period based on current commitments did influence our thinking about priorities.

In our discussions it became clear that the broad themes that shape our recommendations are

Successfully completing the ARIEL­II facility and beginning to deliver on the promise of

increased scientific output and societal benefit

Building the IAMI facility and furthering the goal of advancing isotopes for both science

and medicine

Continuing, through this period of significant infrastructure development, to generate

scientific impact from the onsite and offsite programs

As TRIUMF approaches its 50th anniversary, the need to maintain or upgrade aging

infrastructure has become acute in some areas. PPAC recognizes that addressing these needs

does not generate excitement. However, we note that projects across the full range of TRIUMF’s

scientific activities have successfully attracted substantial external funding, and these exciting

initiatives are premised on the continued reliability of core TRIUMF operations. That these

items should be a priority in the request for core operational funding is natural and appropriate.

We would like to thank TRIUMF for providing us with logistical support and responding promptly

to our requests for information. Finally, the committee would like to thank TRIUMF for the

opportunity to provide community input early in planning process, and we hope our

recommendations will be helpful as you develop a coherent plan for TRIUMF’s future.

On behalf of the TRIUMF Policy and Planning Advisory Committee,

Prof. Bob Kowalewski (PPAC Chair)

University of Victoria

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Appendix: PPAC committee membership Dr. Corina Andreoiu, Simon Fraser University

Dr. Jean­François Arguin, Université de Montréal

Dr. David Asgeirsson, TRIUMF Innovations

Dr. Sampa Bhadra, York University

Dr. Paul Garrett, University of Guelph

Dr. Darren Grant, University of Alberta

Dr. Pr Brigitte Guérin, Université de Sherbrooke

Dr. Garth Huber, University of Regina

Dr. Hae­Young Kee, University of Toronto

Dr. Robert Kowalewski, University of Victoria (Chair)

Dr. Alison Lister, University of British Columbia

Dr. Andrew MacFarlane, University of British Columbia

Dr. Juliette Mammei, University of Manitoba

Dr. Tony Noble, Queen’s University

Dr. Rachid Ouyed, University of Calgary

Dr. Frank Prato, Western University

Dr. Jeffrey Quilliam, Université de Sherbrooke

Dr. Ralf Schirrmacher, University of Alberta

Dr. Jeff Sonier, Simon Fraser University

Dr. Vesna Sossi, University of British Columbia

Dr. Hirohisa Tanaka, University of Toronto

Dr. Manuella Vincter, Carleton University

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