Triple junction 'shed' optimization for the 200kv CEBAF gun upgrade

Slides:

Advertisements

Similar presentations

Ying Tung, PhD Candidate

Advertisements

D. Lipka, MDI, DESY Hamburg, July 2012 Simulation of fields around spring and cathode for photogun D. Lipka, MDI, DESY Hamburg.

Electric field calculation for the neutron EDM SNS experiment. Septimiu Balascuta Ricardo Alarcon ASU, 02/07/2008.

1 Sep. 19, 2006Changguo Lu, Princeton University Induced signal in RPC, Configuration of the double gap RPC and Grouping of the strips Changguo Lu Princeton.

E-field calculations for the TPC/HBD N. Smirnov Upgrade Working Group Meeting 05/13/03, BNL.

Hw: All Chapter 4 problems and exercises Chapter 5: Pr. 1-4; Ex. 1,2 Reading: Chapter 5.

STREAMER DYNAMICS IN A MEDIA CONTAINING DUST PARTICLES* Natalia Yu. Babaeva and Mark J. Kushner Iowa State University Department of Electrical and Computer.

4. Electrostatics with Conductors

Hw: All Chapter 4 problems and exercises Chapter 5: Pr. 1-4; Ex. 1,2 Reading: Chapter 4.

Gaussian TEL gun progress V. Kamerdzhiev, G. Kuznetsov, V. Shiltsev LARP Collaboration Meeting 10 Danfords on the Sound, Port Jefferson, NY, April 23-25,

7.1 Scalars and vectors Scalar: a quantity specified by its magnitude, for example: temperature, time, mass, and density Chapter 7 Vector algebra Vector:

Residential Construction Window Installation Guide *Source: (1) Carpentry & Building Construction Feirer & Feirer (2) Sill to Sash; A Professionals Guide.

Interface Structure for Graphene on SiC(000-1) Randall Feenstra, Carnegie-Mellon University, DMR The interface of graphene on SiC(0001) is known.

Electrostatics Electro- Electricity/charged particles

E. Pozdeyev1 Ion Back-Bombardment in RF Guns Eduard Pozdeyev BNL with contributions from D. Kayran, V. Litvinenko, I. Ben-Zvi.

ELECTRIC FIELD SUMMARY 1/26/10 STUDIO What’s up?  Reading Assignment – Read all of chapter 18. We will try to finish all of it (Gauss’s Law) by Friday.

Simulations of radio emission from cosmic ray air showers Tim Huege & Heino Falcke ARENA-Workshop Zeuthen,

(28 – 1) Chapter 28 Magnetic Fields In this chapter we will cover the following topics: Magnetic field vector Magnetic force on a moving charge Magnetic.

2.1 GHz Warm RF Cavity for LEReC Binping Xiao Collider-Accelerator Department, BNL June 15, 2015 LEReC Warm Cavity Review Meeting  June 15, 2015.

-Electric Potential due to Continuous Charge Distributions AP Physics C Mrs. Coyle.

Mochalskyy Serhiy NI modeling workshop, Chiba, Japan, 2013 Recent state and progress in negative ion modeling by means ONIX code Mochalskyy Serhiy 1, Dirk.

Recall Gravitational PE n The work done to lift a ball of mass 1 kg a vertical height of 1 m is 10 J n What is the work done to lift 5 bowling balls?

Designing a Magnetron Injection Gun and magnetic field to confine the electron beam. Jayakrishnan A. Karakkad, Brian L.Beaudoin, Thomas M.Antonsen Jr.

Sergey Antipov Argonne Wakefield Accelerator group Z. Insepov, V. Ivanov The Direction of the E-field in Glass Pores.

Electric field calculation for the neutron EDM SNS experiment. Septimiu Balascuta Ricardo Alarcon ASU, 02/07/2008.

Gas Electron Multiplier

Kévin Pepitone 1CLIC workshop, CERN, January 2016 Kevin PEPITONE, BE-RF LEETCHI: Drive Beam Electron Source.

Simulation geometry 2000 V terminal Vacuum Glass substrate, ε = 5.8 Resistive coating, ε = 6.8 and σ = 1e-8 S/m The pore has a 40μ diameter and 40:1 aspect.

Micro TPC – simple simulation. Simple model (CST EM Studio) ground Isolator (FR4) mesh Guard ring X axis Top view (without cage) mesh – square,14x14 mm,

Date of download: 10/3/2017 Copyright © ASME. All rights reserved.

PIs: Riad Suleiman and Matt Poelker

Equipotential Lines Are Topographical Maps

Introduction and Goals

Preliminary results for electron lens with beam current of 20 A

Numerical simulations on single mask conical GEMs

Numerical simulations on single mask conical GEMs

Christopher Crawford PHY

Christopher Crawford PHY

Microelectronic Circuits, Seventh Edition

G. Palacios 02/25/18 E_y field as a function of anode vertical position for 200kV CEBAF gun upgrade G. Palacios 02/25/18.

Gabriel Palacios 03/15/17 Shed modifications Gabriel Palacios 03/15/17.

200 kV gun GPT simulations Tee, shroom and sphere catohdes

Background magnetic field and holding coil simulation

Gabriel Palacios 03/17/17 Danny’s Shed Gabriel Palacios 03/17/17.

Perturbation of Focusing Field Profile due to HV Support Tube

NEG-coated gun: Black R30 arc at 227kV, white R30 arc at 164 after refurbishing and second bake Carlos Wednesday, August 10, 2018.

Transformations Geometry

Gabriel Palacios 08/12/ kV gun GPT simulations Tee, mushroom and sphere cathodes CEBAF beam parameters Gabriel Palacios

200 kV gun CST microwave studio simulations Shield modifications

Physics of Everyday Phenomena

Gabriel Palacios 08/13/ kV gun GPT simulations Tee, mushroom and sphere cathodes CEBAF beam parameters Gabriel Palacios

Studies of Emittance & Lifetime

200 kV gun CST microwave studio simulations Shield modifications

27 Prepositions and prepositional phrases

Data shown for CEBAF upgrade Gun being tested in UITF

Figure (a) Physical arrangement of a p–n junction

Gabriel Palacios 08/28/ kV gun GPT simulations sphere with long anode GTS beam parameters, Spacecharge ON Gabriel Palacios

Gabriel Palacios 08/30/ kV guns CST + GPT Gabriel Palacios 08/30/18.

Carlos Hernandez-Garcia Don Bullard February 2, 2017

350kV and 500kV Yan 9/8.

Physics 014 Electric fields 1.

Figure (a) Physical arrangement of a p–n junction

Simulation of Emittance

Gabriel Palacios 09/04/18 Tests for Joe Gabriel Palacios 09/04/18.

Principles of Defense The Basics.

Chapter 23 Electric Field Phys 133.

Chapter 28 Magnetic Fields

QuickCheck 26.1 This is a graph of the x-component of the electric field along the x-axis. The potential is zero at the origin. What is the potential.

Wien filter 2 06/05/2019 Gabriel Palacios.

UITF: T-cathode electrode, BPM [kV]

Presentation transcript:

Triple junction 'shed' optimization for the 200kv CEBAF gun upgrade Carlos Hernández Gabriel Palacios 3/8/2017

Outline Ball vs T cathode Top flange accurate modeling Shed optimizations Triple junction Cusp

Ball vs T-cathode -250 kV side view

Sphere vs T-cathode -250 kV front view

Top flange

Top flange potentials along rubber-insulator boundary.

Sheds

Sheds

Sheds

Sheds

Sheds

Original vs best (mod 2.3)

Original vs best (mod 2.3) potential

Original vs best (mod 2.3) E field along x-axis

Original vs best (mod 2.3) E field along y-axis

Cathode-anode

Original vs best (mod 2.3) Ex field on cathode-anode gap

Original vs best (mod 2.3) Ey field on cathode-anode gap

Original vs best (mod 2.3) Ey field on cathode-anode gap

Original vs best (mod 2.3) Ey field on cathode-anode gap

Original vs best (mod 2.3) cathode-anode gap

Conclusions The simulation quality improved by using detailed geometry. The shed should be close near the triple point and then curve away softly to optimize the fields around that area. does not have a strong effect on the potential and electric fields along the rubber-insulator boundary. slightly modifies the y component of the electric field in the cathode-anode gap.