lerec. cooling in blue rhic ring cooling in yellow rhic ring 63.9 m to ip2 beam dump 20 bending...
DESCRIPTION
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, JT Cooling section loose ends, transport instrumentation (DC Gun) LEReC Meetings 3TRANSCRIPT
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