LARP PS2 Budget Guidance FY10 By Lab: k$ By Task: k$ LBNL 262 - - PowerPoint PPT Presentation

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Nov 29, 2022 367 likes •469 views

LARP PS2 Budget Guidance FY10 By Lab: k$ By Task: k$ LBNL 262 Sp-Ch sim. 173 FNAL 39 Instabilities 130 BNL 133 e-Cloud 199 SLAC 237 feedback 40 Total: 671 IPM: 133 Total 675 By Lab & Project FY10 PersonYear tot SLAC

SLIDE 1

LARP PS2 Budget Guidance FY10

By Lab: k$ LBNL 262 FNAL 39 BNL 133 SLAC 237 Total: 671 By Task: k$ Sp-Ch sim. 173 Instabilities 130 e-Cloud 199 feedback 40 IPM: 133 Total 675

SLIDE 2

By Lab & Project

PersonYear tot SLAC LBNL FNAL BNL Travel & M&S Space-charge tracking, collim 0.6 0.50 0.13 15 $ Instability 0.5 0.5 0.0 5 $ e-cloud 0.7 0.25 0.5 15 $ Feedbacks 0.1 0.125 0.0 5 $ IPM & Phase-space diagnostic 0.5 0.5 8 $ Total FY10 2.5 0.875 1.0 0.13 0.5 48 $ FY10

Note: Travel in general split evenly between participating labs (with FTE count !"0)

SLIDE 3

Scope

Space-Charge

– Setup model, 1st simulations, compare solvers, est. numerical stability.

Instabilities

– 1st estimates single bunch: wave, TMCI, Res. Wall, s/c impedance, IBS, mb growth rates

E-Cloud simulations

– Refine build-up assessment, compare PS2-MI, initiate effect

n beam (in dipoles), need to combine s/c & e-cloud

simulations?

B-B Feedback Systems

– Acquire parameters (esp. rf cavity), initial estimates.

IPM Development

– (no activity in FY09)

Where we are today (supposedly):

SLIDE 4

Scope for FY10

Space-Charge

– Long-term sim. W/ ML/I, Impact & Synergia, iterate as req’d. Begin studying mitigation measures, begin implementing energy ramp.

Instabilities

– Build impedance model based on available data. Investigate components (based on ext. designs), s-b growth rates & characteristics of impedance.

E-Cloud simulations

– E-Cloud impact on beam w/ uniform-focusing model, instab. Threshold, study parameter space,

B-B Feedback Systems

– Acquire parameters (esp. rf cavity), initial estimates, conceptual design of f/b system.

IPM Development

– Gather up & analyse specifications, estimate performance for state-of-the-art designs

SLIDE 5

Project Lead Lead lab FY09 FY10 FY11 FY12 Space-charge Tracking & Collimation

R. Ryne/P.

Spentzouris LBNL/FNAL Implement PS2 model in ML/I, Impact, and

Synergia. Validate

model, perform first space- charge simulations at injection (no ramp), investigate solver parameters and establish numerical stability of space- charge model, compare results from different codes: Perform long term simulations with ML/I, Impact, and Synergia to characterize space- charge effects on beam shape. Comparisons and checks between codes, update/iterate lattice parameters, especially rf as they become available, interface with PS2 design team. Begin investigation of space- charge mitigation

ptions (as per our

proposal, begin development for incorporating ramp Continue to iterate with PS2 design team

n design
parameters. Finalize &

document findings on beam-shape (halo) generation Finalize & document findings of space- charge mitigation

investigation. Write

Design Report. Begin development of necessary infrastructure for interface with collimator design codes; model tests; comparison between codes; deliver prototype with interface to at least

ne collimator design

code Impedances & Instabilities

K. Bane

SLAC First estimates of single bunch instabilities, microwave, transverse mode coupling instabilities, evaluate space charge impedance, intrabeam scattering growth rates, Resistive wall, multi-bunch transverse instability Build impedance model using best available data or from components of existing machines, numerical calculation

f impedance

components, e.g. rf bellows, kickers, BPM’s, transitions, estimate single bunch growth rates and characteristics of instabilities Refine and iterate with PS2 design group Write impedance and instabilities section in the PS2 conceptual design report. Begin vacuum system hardware design investigations (if possible/desired by SLAC & CERN). e-Cloud Simulations

M. Furman/M. Pivi

LBNL/SLAC Refine assessments

f electron-cloud build-

up, Compare electron- cloud build-up at the PS2 against MI

upgrade. Initiate

assessment of e- cloud effect on beam (dipoles only at first). Assess need to combine space charge with ecloud simulations Continue assessment

f ecloud impact on

beam for full ring with uniform-focusing lattice model. Estimate threshold of e-cloud density. Explore parameter space, Secondary emission model, PS2 design parameters are changing. Assess ecloud mitigation

mechanisms. Initial

assessment ready by June 2010, Refine assessment of impact of e-cloud on beam by incorporating a realistic lattice

description. Ongoing

re-assessments to continue as needed,

incl. assessment of

mitigation strategies. Incorporate details of the vacuum hardware into e-cloud

assessments. Write

Design Report Bunch-by-Bunch Feedbacks

C. Rivetta

SLAC Acquire parameters (rf cavities), initial estimates of growth rates Couple-Bunch stability studies - Conceptual design of feedback systems. Conceptual design of feedback systems and

kickers. Write Design

Report. Ionization Profile Monitor

R. de Maria

BNL/SLAC Analyze specs. Estimate performance for state-of-the-art designs Select subsystems, conceptual designs Write Design Report

SLIDE 6

CM13 Presentations

I’ll be soliciting a PS2 progress report by a

CERN person (Riccardo qualifies :-).

I’d like to have progress updates for work

done since CM12 for each subtask and updated plans for next 1/2 year.

I will be working with CERN colleagues to

start defining the Design Report sections we plan to write & report on that.

I hope for and encourage technical

discussions, and I expect to continue refining scope.

SLIDE 7

PS2 Design Report Commitments

Interest by CERN & LARP for us to write applicable

sections of the PS2 DR.

I have asked CERN for an outline

– It is still early, so they may not have one yet – Nevertheless, a generic outline is not hard to write down

Agreeing to this is a commitment by LARP to deliver
n time (late CY 2011).
Since LARP appears to be providing the required

funding, this is a commitment by each of us also, to deliver (with a scope as we developed it last year).

It may be of advantage to codify this in an MOU

(LARP-CERN)

SLIDE 8

Please review your scope & manpower