LEReC

COOLINGin Blue RHIC ring

COOLINGin Yellow RHIC ring

63.9 m to IP2

Beam Dump

20° Bending Magnets

DC e- Gun

704 SRF Booster Cavity2.1 GHz

Cu Cavity9 MHz

Cu Cavity704 MHz Cu Cavity

CommissioningDiagnostic Line 1Commissioning

Diagnostic Line 2

RHIC TRIPLET RHIC DX

180° Bending Magnet

LEReC Solenoids

Compensating (LF)

Matching (HF)

Merger/Transport

LEReC layout

ee--

• LEReC Beam Physics & Lattice • LEReC Cathodes: usually Fridays C.J. Liaw, JT• LEReC DC Gun: Phone conference with Cornell usually Fridays,

bi-weekly C.J. Liaw• LEReC DC Gun to Booster Cavity: bi-weekly, S. Nayak• LEReC Booster Cavity Modification, K. Smith• LEReC Diagnostic Beam Line: weekly, K. Smith• LEReC warm RF Cavities: Vendor phone conferences, Purchasing,

tuner and window design, A. Zaltsman• LEReC beam diagnostics: weekly, T. Miller

• LEReC transport and cooling beam lines: bi-weekly, JTCooling section loose ends, transport instrumentation (DC Gun)

LEReC Meetings

3

Beam Dump

20° Bending Magnets

DC e- Gun

704 SRF Booster Cavity2.1 GHz

Cu Cavity9 MHz

Cu Cavity704 MHz Cu Cavity

CommissioningDiagnostic Line 1Commissioning

Diagnostic Line 2

RHIC TRIPLET RHIC DX

180° Bending Magnet

LEReC Solenoids

Compensating (LF)

Matching (HF)

Merger/Transport

LEReC apertures

5.0 OD x 4.78 ID

3.75 OD x 3.62 ID

2.50 OD x 2.38 IDValves 2.44

Issues:1. Fragile BPM button assemblies2. Slit vacuum chamber leak

Cooling Section Installation

5

Standard Profile Monitor Assemblies (3)(2 chambers held for drive testing)

180o Magnet Assembly• Magnet (magnetic measured)• Hybrid PM/ES/BPM Assemblies (2)• Vacuum chamber (measured)• Magnetic field monitoring (characterized) • Stand (non-moving)• Bellows assembliesEmittance Slit Assemblies (3)

(Chamber held for drive testing)Magnet shielding test assembly

April DOE Review: Test Set-ups Complete

Cooling Section 2016 Installations

6

Injection BPM = 6 YAG = 3 ICT = 1 DCCT = 1 Emittance Slit = 1 Halo Pairs = 2 Faraday Cup (& pick-ups) = 5

BPM

Vertical& Horizontal

Halo Monitors& Pick-Ups

Solenoid(s)YAG

Em-Slit

DCCT

ICT

BPMBPM

BPM

Laser InjectionPort

YAG

CathodeCamera

DC Gun(Photocathode)

704 MHzSRF Booster

BPM

Diagnostics: Gun to Booster Cavity

2.1 GHzWarm Cavity

7

BPM

YAG

Faraday Cup

Cornell Layout GtB, Bake-out to 200C near DC GunDC Gun instrumentation:- Large Button or ERL Buttons or Striplines??- Profile Monitor in Laser Cross- Cathode Camera in Laser Cross

Equipment specifications:•Solenoids, Dipole, BPM’s•Beam diagnostics hardware and electronics•Beam line vacuum

Analysis and Mechanical Design•BPM chamber assemblies and stands (new or ERL buttons?)•Profile monitor vacuum chambers (ERL drive assemblies)•Emittance slits (ERL parts?)•Halo monitor•Faraday cup for diagnostic line 1•DCCT and ICT

Transport Line Instrumentation

8

Gun to Booster

9

Laser trace for 6mm offset redesignRelocate laser mirrorsRelocate Solenoid and Corrector MagnetsRelocate BPM’s and Profile MonitorAdd clearing electrodes (BPM buttons)Redesign Booster Cavity upstream end

Booster Cavity Installation

10

2.1 GHz Cavity• Cavity fabrication contract awarded, first vendor meeting yesterday.• Windows ordered, JLAB testing next week.• Frequency change and tuner section redesign complete, ECN

complete• Aluminum cavity testing underway• Tuner design• Vacuum wave guide and wave guide• Stand assembly design

11

Cavity fabrication requisition preparedDrawing revision for frequency changeRFP out – Bids due 2/5/15Tuner designWindow design

704 MHz Cavity

12

Frequency 703.6 MHzNo. of cells 1Rsh 5.0 MOhmR/Qacc 178 OhmCavity voltage 430 kVRequired RF power 37.0 kWInstalled RF power 50 kW

LEReC Cooling Section Design Room

13

LF & HF solenoid and 20o dipole magnets fabrication drawings (KH)Beam Diagnostics: BPM chamber and buttons (VDM)Beam Line 5” bellows with shields fabrication drawings (GW)20o dipole vacuum chamber for impedence review (KH)180o dipole fabrication drawings (KH) Spectrometer magnet (180o dipole) revisions (KH) 180o vacuum chamber + large sliding bellows fabrication drawing (KH)Beam Diagnostics ES W slit & chamber fabrication drawings (VDM)20o dipole vacuum chamber fabrication drawings (KH)Cable tray and penetration drawings and excel sheet (AF)Beam Diagnostics: PM vacuum chamber fabrication drawings (GW)Beam Diagnostics: standard PM fabrication drawings (GW)Beam Diagnostics: special “hybrid” ES/PM/BPM fabrication drawings (GW)Beam line solenoid/BPM stands & vacuum chamber stand (VDM) 20o magnet stand drawing (KH)180o magnet w/hybrid assembly BPM stand drawings (KH) on holdMagnetic shielding drawing and solenoid magnetic measurement test station (VDM) on holdIn tunnel, magnetic measurement “mole” for stray field studiesHF dipole, quadrupole, and skew quadrupole corrector drawings

LEReC Design Room Source Design Work

14

DC Gun Vacuum Chamber Fabrication Drawings (JH)DC Gun SF6 Pressure chamber specification control drawings (JH)DC Gun cathode cooling design for Karl S. Cornell (JH) DC Gun stands (JH) DC Gun to SRF booster cavity beam line (JH)DC Gun to SRF booster cavity laser port, view port, profile monitor (JH)DC Gun to SRF booster cavity solenoid/corrector magnets (JH)DC Gun to SRF booster cavity BPM’sDC Gun cathode insertion drive assembly ERL Gun to Booster Cavity Modifications: U/S cathode to beam tube, FPC, D/S beamline & HOM (SS, JH)Cathode coating system cathode bakeout vacuum chamber & heater (KH & BM)Cathode coating system deposition vacuum chamber w/internal cathode transport system (KH)Cathode coating system transport vacuum chamber – ferris wheel (KH & WJ)

LEReC Design Room Other Work

15

RHIC 1:00 move real estate drawings (V.DM.)Cryogenic system layout (RM)2.1 GHz warm cavity spec. control drawings (MG)2.1 GHz warm cavity tuner, wave guide, and warm test model (MG)704 MHz warm cavity spec. control drawings (SP)Transport & Merger line layout (RM, KH)

Locate booster cavity, solenoids, BPM’s, RF Cavities, PM’s, Diagnostic Lines Transport & Merger Line Solenoids (KH)Transport Line Solenoid StandsTransport & Merger Line Bellows and Pump Ports (GW)Transport & Merger Line CT’s (GW)Transport & Merger Line BPM’s (GW)Transport & Merger Line Correctors Transport & Merger Line Profile MonitorsMerger Line Flying WireDiagnostic Beam Lines and Components

Kickers, RF cavity, beam dump,

16

• Dipole Correctors moved offset (D/S) from solenoid center line.• BPM moved offset (D/S) for solenoid center line.• BPM configuration defined??• Quad and Skew Quad correctors (weak) shortened to allow BPM

clearance.

Gun to Booster

17

Gun to Booster

18

Define Laser box requirementsDetail solenoidDefining correctors

19

Diagnostic Line - 2017

20

12/15 Revised Transport Solenoid

AverageJ = 75 A/cm2

Parameters:Conductor: #5 square, solid wire

Total ampere turn: 2 x 7792.2 = 15,584.4 AT (plus some safety margin)

Center field B = 647.3 GaussIntegral Bz^2 = 1.081E7 G2-cm

(Req. 1.080E7 G2-cm)

16.4015.1314.80

5.21 12.2313.25

15.03

R (cm)

(1.27 thick)

(1.78 thick)

1020 Steel

12/15 Revised Transport Solenoid840 Turns, #5 square copper conductor.18.6 A, 7.2 V, 0.39 OhmsWill use for both Merger and Transport SolenoidsMagnets designed for 2.5” pipe.

22

• Need 13, will this number be changed? when

• Diagnostic line solenoid – same spec’s?

12/15 Revised Transport Solenoid

23

Quad/SQCorrector

± 4.13”

EMITTANCE SLIT

PROFILE MONITOR

LOW FIELD SOLENOID

HIGH FIELD SOLENOID

kh

BPM

BPM

BPM +YAG + Slit

Assemblies

PROFILE MONITOR

BLUE RHIC Beam

YELLOW RHIC Beam

180o Dipole Magnet Neighborhood 2016

H/VCorrector

COOLING Section Solenoids

High Fi

eld

Soleno

id

Hybrid

BPM

Dipole

Corre

ctor

180°

Dipo

le

Gate V

alve

Profile

Mon

itor

Low Field

Solenoid

Quad CorrectorEm

ittance Slit

Bellow

s

20° D

ipole

Quad

Corre

ctor

High fie

ld

solen

oid

Low Field

SolenoidProfile Monitor

BPM

Gate V

alve

Emittan

ce S

lit

BPMLo

w Field

Soleno

id

Bellow

s

YELLOW RHIC Beam

BLUE RHIC Beam

kh

CSY1CSY2CSY3CSY4CSY5CSY6CSY7CSY8

CSB1 CSB2 CSB3 CSB4 CSB5 CSB6 CSB7 CSB8

PS Layout Phase 1

26

e-Beam Transport BPM = 8 YAG = 1

704 MHzWarmCavity

BPM BPM

Solenoid(s)11 locations

2.1 GHzWarm Cavity

BPMBPMBPMBPMBPM

Quadrapole(s)2 locations

YAG

Diagnostics: Transport

BPM

27

704 MHzWarmCavity

Beam pipe size 2.38 ID does not match ERLBake-out to near RHIC and near Booster Cavity??ERL Buttons for BPM’s OK??Profile Monitor drives from ERL, vacuum chamber?ERL emittance slit driveCommissioning line dipole angle2nd 2.1 GHz cavity location?Another 20o dipole?

Merger Beam Line

e-Beam Transport BPM = 2 YAG = 1 Flying Wire = 1

BPM

28

BPM

Au Ion BeamYellow Ring

To CoolingSection

From ElectronTransport

To CommissioningBeam Line

FlyingWire

YAG

Beam pipe size 2.38 ID does not match ERLBake-out to 200C?? near RHIC Flying wire system or equivalent TBD

Commissioning Beam Line

29

Fixed YAG

DeflectingCavity

(704MHz)

FromTransportSection

HVDCDeflector

Medium Power Beam Dump

(Full Power ~250μs)

Solenoid

To Merger

Section

Scanning YAGProfile Monitor

Faraday Cup

YAG& Slit

Commissioning B/LYAG = 3 Faraday Cup = 1Defining Slit = 1

Beam Sampling Technique for high power single macro bunch

measurements

Separate Group MeetingKicker TBSMerger solenoid??Internal beam dump TBDDeflecting cavity design underwayHVDC deflector TBDAnother 20o dipole? TBDFixed and Scan YAG’s dumps

Merger/Transport

704 C

avity

9 MHz C

avity

Wire

Sca

nner

Profile

Mon

itor

Quadrupole

20° dipole

Beam

Dump

Profile Monitor

Merge

r Sole

noid

BPM

Quadr

upole

Bellow

s

Gate V

alve

Corre

ctor

20° d

ipole

Profile

Mon

itor

Triplet

Quadrupole

Gate Valve

Instrumentation line Need Quadrupole Magnet Spec’sSame as dump quadrupole?Move gate valve down stream of 20o?

IP 02:00

Profile

Mon

itor

20° d

ipole

Merge

r Sole

noid

Profile

Mon

itor

Emittan

ce S

lit

Commissioningline

2.1 G

Hz Cav

ity

Small Dia. BPM Housings (2.38 ID), 10mm buttons•ERL Buttons different size and shape

BPMs in Transport Section