# Presentation: 763222

## LARP Accelerator Systems: Status & Expectations for This Review

- Vladimir Shiltsev (Fermilab)

***bnl - fnal- lbnl - slac***

_**US LHC Accelerator Research Program**_

## Content

- What’s up since last LARP Meeting:
- DoE Review
- My appointment
- CERN US LARP Mtg
- CTF Report, R&D Plan
- Org changes
- Tasks
- Progress with existing tasks
- New Initiatives
- Issues:
- Budgeting
- Reporting
- DoE Review
- Expectations for this meeting

- LARP Collab Mtg 10/05/05 - V.Shiltsev

## Accel Syst presentations from Steve P, Mike S, Tom M, Alex R, Vladimir S 
Overall score ~”B”
Concerns: 
Relationships with CERN too casual, need MOUs 
$$ for hardware commissioning
protect $$ for deliverables (instrumentation)
vague plans for beam commissioning
Action items:
LARP R&D Plan by Sep 30
Appoint Accel Syst L1 Leader by Aug 31
Detailed Magnet Review in Nov  added Acc Syst 

- Overall score ~”B”
- Concerns:
- Relationships with CERN too casual, need MOUs
- $$ for hardware commissioning
- protect $$ for deliverables (instrumentation)
- vague plans for beam commissioning
- Action items:
- LARP R&D Plan by Sep 30
- Appoint Accel Syst L1 Leader by Aug 31
- Detailed Magnet Review in Nov  added Acc Syst

**DoE/NSF Review June 1-2, 2005**

- LARP Collab Mtg 10/05/05 - V.Shiltsev

## (Vladimir S to lead Accel Syst)
Comments/Issues discussed: 
CERN appreciated the formal separation of “commissioning efforts” from “accelerator physics”
CERN requested to start local (=CERN) work on installation preparation (~1FTE).
Need to resolve hardware commissioning $$ ASAP
Install add’l monitors in IP2 and IP8
New proposal on dB/B (see below)
Remote Access Room at FNAL ~positive, “but...”

- Comments/Issues discussed:
- CERN appreciated the formal separation of “commissioning efforts” from “accelerator physics”
- CERN requested to start local (=CERN) work on installation preparation (~1FTE).
- Need to resolve hardware commissioning $$ ASAP
- Install add’l monitors in IP2 and IP8
- New proposal on dB/B (see below)
- Remote Access Room at FNAL ~positive, “but...”

**CERN-US LARP Mtg, Sep 14**

- LARP Collab Mtg 10/05/05 - V.Shiltsev

## CTF Report – released in Sep:
Available Res’s	      Low-Est	Optmistic
Hardware Commss     6 FTE           11.5 FTE
Beam Commiss.	
	long-term visits       8 FTE	         19 FTE
	short-term visitors   22	
R&D Plan (Sep 30, 2005): 
Compendium of tasks
Description and planning
Available via LARP Doc (see below)

- Available Res’s	      Low-Est	Optmistic
- Hardware Commss     6 FTE           11.5 FTE
- Beam Commiss.
- 	long-term visits       8 FTE	         19 FTE
- 	short-term visitors   22
- R&D Plan (Sep 30, 2005):
- Compendium of tasks
- Description and planning
- Available via LARP Doc (see below)

**CTF Report, R&D Plan**

- LARP Collab Mtg 10/05/05 - V.Shiltsev

## Org Chart Changes

- LARP Collab Mtg 10/05/05 - V.Shiltsev

##  Good news: 3D tracks RHIC ramp (despite 60 Hz lines)

**245MHz**
**                 ****BBQ**

-  **Good news: 3D tracks RHIC ramp (despite 60 Hz lines)**

- LARP Collab Mtg 10/05/05 - V.Shiltsev

##  PLL TT on Tevatron Ramp 

*#4386*

- LARP Collab Mtg 10/05/05 - V.Shiltsev

## LM 40 MHz ALS X-ray test 

- LARP Collab Mtg 10/05/05 - V.Shiltsev

##  Phase II Collimators

** ****Phase II Collimators**

**beam**

**R1 CDR (mech proto) OK’d by CERN**

- LARP Collab Mtg 10/05/05 - V.Shiltsev

##  Physics: Long Range @ RHIC

- SPS	     :  ~  d5	[measured 11/09/04]
- Tevatron:  ~ d3		[measured in HEP stores, TEL]
- RHIC     :  ~ d4 or d2 	[measured 04/28/05, scan 4]

- LARP Collab Mtg 10/05/05 - V.Shiltsev

## New Initiatives: Instrum 

- 4.7 GHZ Schottky Monitor
- ZDC = Zero Degree Calorimeters
- Head-Tail Monitor
- AC Dipole
- SyncLight Collector

- LARP Collab Mtg 10/05/05 - V.Shiltsev

## Schottky - Technical approach

*Reports:            bunch-by-bunch, p,a*
*	** **	**tunes*
*	**	**chromaticities*
*	**	**emittances*
*	**	**momentum spread*

*1.7 GHz  75 mm aperture at Tev*
*4.7 GHz  60 mm proposed for LHC*

- LARP Collab Mtg 10/05/05 - V.Shiltsev

## Schottky Monitor in Tev  LHC 

*** **Store 4371; optics correction during store, 1.7 Ghz Schottky shows significant chromaticity change*

*4.7GHz to be built by CERN*
*R.Pasquinelli & A.Jannsson of FNAL to design it, and take part in integration, analysis software development and commissioning** *

- LARP Collab Mtg 10/05/05 - V.Shiltsev

##  ZDC in RHIC

*p-p store (June 21, 2005)*
*Independence on background need to be checked*

- LARP Collab Mtg 10/05/05 - V.Shiltsev

## New Initiatives: Head-Tail Q’ 

- Modern scopes
-   allow to detect
-   motion of 5cm
-   slices of 10-50
-   cm long bunch
- Head-tail phase difference ~Q’
- In routine use for injection tuneup Tev
- +- 0.5 unit, very fast, reliable;also computes tunes, coupling, checks optics
- V.Ranjbar is here to discuss LHC case

- LARP Collab Mtg 10/05/05 - V.Shiltsev

## AC Dipole 

- Tevatron is building one for Run II upgrades  LHC?

- LARP Collab Mtg 10/05/05 - V.Shiltsev

## New Initiatives: Commiss 

- Remote Access Room
- LARP Doc database
- LARP Web page

- LARP Collab Mtg 10/05/05 - V.Shiltsev

## Four  Types of Participation:
Deliverables
	person builds something, visits to install, debug, etc., then leaves; may need remote access
On-site Commissioning
	person has moved to CERN (for ~1 year, say) and works daily with LHC group
1-on-1 Contacts
	person works with a particular person or group located at CERN, with occasional trips to CERN to participate in a study, etc.
Remote Participation
	person is part of a group at Remote Site, participating daily for shorter time periods
	"Training” can be performed at the Remote Site; periodic, shorter trips to CERN working with the "On-site" commissioners; people can continue to work remotely upon return

- Deliverables
- 	person builds something, visits to install, debug, etc., then leaves; may need remote access
- On-site Commissioning
- 	person has moved to CERN (for ~1 year, say) and works daily with LHC group
- 1-on-1 Contacts
- 	person works with a particular person or group located at CERN, with occasional trips to CERN to participate in a study, etc.
- Remote Participation
- 	person is part of a group at Remote Site, participating daily for shorter time periods
- 	"Training” can be performed at the Remote Site; periodic, shorter trips to CERN working with the "On-site" commissioners; people can continue to work remotely upon return

**Commissioning Team**
-   at CERN
- 	LARP
- 	Team Member

**Remote Site**
- Critical Mass:
-   consoles, video/audio, eLogs,
-   meeting space, coffee, etc.

- collaborative beam studies
-             “real time”

- off-line analyses

- periodic shifts

- special responsibility
- for communication
- with Remote Site

** ****Motivation for Communication Center**** **

- LARP Collab Mtg 10/05/05 - V.Shiltsev

## Are we happy with LARP web page?

Plans?

- Plans?

** ****LARP Web page**** **

- LARP Collab Mtg 10/05/05 - V.Shiltsev

##  LARP Doc Base – As of Now

- [ _[DocDB](http://larpdocs.fnal.gov/LARP-public/DocDB/DocumentDatabase)__[ Home](http://larpdocs.fnal.gov/LARP-public/DocDB/DocumentDatabase)_ ]  [ _[Search](http://larpdocs.fnal.gov/LARP-public/DocDB/SearchForm)_ ] [ _[Last 20 Days](http://larpdocs.fnal.gov/LARP-public/DocDB/ListBy?days=20)_ ] [ _[List Authors](http://larpdocs.fnal.gov/LARP-public/DocDB/ListAuthors)_ ] [ _[List Topics](http://larpdocs.fnal.gov/LARP-public/DocDB/ListTopics)_ ]
**These documents have been modified in the last ****120 days****.**

| LARP-doc-# | Title | Author | Last Updated |
| --- | --- | --- | --- |
| 6-v1 | LARp Accelerator Systems R&D plan | Vladimer Shiltsev | 04 Oct 2005 |
| 5-v1 | CERN-US Meeting - Accel Systems Notes | Vladimer Shiltsev | 04 Oct 2005 |
| 2-v5 | Obt solete - Recipe for getting a DOEGrid certificate and using it in the LARP document database. | Jean Slaughter | 11 Sep 2005 |
| 1-v8 | obsolete document on Kerberos certificates | Jean Slaughter | 11 Sep 2005 |
| 3-v1 | LHC Commissioning Task Force Report | Vladimer Shiltsev | 06 Sep 2005 |

**Number of documents found: 5**
- [ DocDB Home ]  [ New ]  [ Search ] [ Last 20 Days ] [ List Authors ] [ List Topics ] [ Help ]
- DocDB Version 7.1.2, contact *LARP Document Database Administrators** ***Execution time: **0 wallclock secs ( 0.08 usr + 0.03 sys = 0.11 CPU)

- LARP Collab Mtg 10/05/05 - V.Shiltsev

## New Initiatives: Collimators 

- Bended Crystal Collimator

- LARP Collab Mtg 10/05/05 - V.Shiltsev

## Bended Crystal in TeV

*End of Store   Angle Scan*
*  **(Sep 30)*

- LARP Collab Mtg 10/05/05 - V.Shiltsev

## New Initiatives: Physics 

- Beam-beam codes cross-check
-    and calibration vs observations
- Wire Compensator
- Crab Cavities
- TEL RHICLHC
- dB/B
- E-cloud suppressor

- LARP Collab Mtg 10/05/05 - V.Shiltsev

## Benchmarking Simulations

- 6 codes developed : J.Shi, J.Qiang, T.Sen, F.Zimmermann, W.Herr, S.Valishev, A.Kabel
- Various success in explaining observations
- Lack of coordination
- Experimental evidence so far
- SPS expt: variation of losses with wire currents, tunes, separations
- RHIC experiment: variation of losses with beam-beam separation, tune variation
- Tevatron: dedicated experiments and in-store studies
- Difficulties to overcome:
- What is common observable in experimt’s and sim’s?
- Hard to simulate lifetimes with good statistical accuracy, emittances often used
- Experiments: hard to measure emittance changes over the small time scale of simulations

- LARP Collab Mtg 10/05/05 - V.Shiltsev

## RHIC BBLR design – Sketch

**Main features:**
-  elliptic copper bar (a/b = 59%)
-  air cooled heat sinks
-  on vertically movable stand  (60mm movement)

- LARP Collab Mtg 10/05/05 - V.Shiltsev

## Single Crab Cavity 200MHz

- Forward
- beam

- Return
- Beam

**RF Cavity**
**TM****010**

**Dampers**

**Dampers**

## Tevatron Electron Lens   

- few Amps enough for head-on
- beam-beam tune spread compensation
-  two TELs avail after 2009
-  one in RHIC (m.b. in 2008?)
-  one (later 2nd) in LHC beta_x=beta_y

- LARP Collab Mtg 10/05/05 - V.Shiltsev

##  Dipole Field Fluctuations with Screen 

**Tevatron Stand-Alone Dipole measurements (Proc. PAC’01)**

|  |
| --- |

- LHC screen: light and feels 20 K He flow turbulence;
- B-flux is constant at 3kHz
- dB/B ~ dR/R  need
- dR < 1A to blow horizontal emittance
- Can be measured at CERN MMF and in Tev

- LARP Collab Mtg 10/05/05 - V.Shiltsev

## +100 V on an electrode inside beam screen

** ****e-Cloud Suppressor**** **

- LARP Collab Mtg 10/05/05 - V.Shiltsev

## Expectations for This Meeting

- Brief progress reports
- Existing tasks
- Overall planning
- Resource issues ($$, people)       	Discussion
- New Initiatives:
- Short explanations, gains
- Tentative R&D plans
- Resources needed      			Discussions
- Issues:
- Budgeting
- Reporting
- DoE Review					Discussion
- Summaries from Alex, Tom, Mike, (Vladimir)

- LARP Collab Mtg 10/05/05 - V.Shiltsev

##  ...

- LARP Collab Mtg 10/05/05 - V.Shiltsev

## Apr 05 - 	Preliminary Design Review - completed
Jun 05 -	finalize prototype architecture - need 		60Hz  balancing at RHIC 
Nov 05 - 	prototype (4 planes) ready for 			RHIC beam
Feb 06 - 	send 2 planes to CERN for SPS testing
Apr 06 - 	Final Design Review
May 06 - 	SPS testing, initial Controls integration 	     	(FESA)
Jun 06 - 	finalize architecture
Nov 06 - 	final system (4 planes) ready for RHIC 		beam
Feb 07 - 	deliver final system to CERN, system 		integration and testing
Summer’07 - system commissioning with beam

- Jun 05 -	finalize prototype architecture - need 		60Hz  balancing at RHIC
**Nov 05 - ****	****prototype (4 planes) ready for ****	****	****	****RHIC beam**
- Feb 06 - 	send 2 planes to CERN for SPS testing
- Apr 06 - 	Final Design Review
- May 06 - 	SPS testing, initial Controls integration 	     	(FESA)
- Jun 06 - 	finalize architecture
- Nov 06 - 	final system (4 planes) ready for RHIC 		beam
- Feb 07 - 	deliver final system to CERN, system 		integration and testing
- Summer’07 - system commissioning with beam

**Tune Feedback Milestones**

- LARP Collab Mtg 10/05/05 - V.Shiltsev

## Luminosity Monitor

- LBNL to deliver
- 4 ion chambers with electronics
- DAQ with programming
- Installation support
- Hardware commissioning
- CERN to provide
- Local installation
- Control system integration
- VME64 infrastructure
-    Agreement being defined in a system integration document part of the LHC document control system

- LARP Collab Mtg 10/05/05 - V.Shiltsev

## LM: Milestones

**FY05**
- 	Complete conceptual design of FE electronics
- 	Complete/formalize system integration 	document
-   Complete high speed tests; 40MHz @ ALS
**FY06**
- 	Design and build first unit of DAQ system
- 	Final design of complete first unit
- 	Test prototype at RHIC
**FY07**
- 	Build all units
- 	Install and HW commission all units

- LARP Collab Mtg 10/05/05 - V.Shiltsev

##  Collimators R&D: 4 Tasks

- Use RHIC data to benchmark the code used to predict the cleaning efficiency of the LHC collimation system Responsible: Angelika Drees, BNL [Task #2]
- Understand and improve the design of the tertiary collimators that protect the LHC final focusing magnets and experiments
-     Responsible: Nikolai Mokhov, FNAL [Task #3]
- Study, design, prototype and test “Phase II” collimators that can be dropped into 32 reserved lattice locations required for L=1e34
-    Responsible: Tom Markiewicz, SLAC [Task #1]
- Use the facilities and expertise available at BNL and FNAL to irradiate and then  measure the properties of the materials that will be used for phase 1 and phase 2 collimator jaws Responsable: Nick Simos, BNL [Task #4]

- LARP Collab Mtg 10/05/05 - V.Shiltsev

##  Collimators R&D: Milestones

- FY 2004:	Introduction to project
- FY 2005:	Phase II CDR and set up of a collimator lab at SLAC
- FY 2006:	Design, construction & testing of **RC1**
- FY 2007:	Design, construction & no-beam testing of **RC2**
- FY 2008:	Ship, Install, Beam Tests of RC2 in LHC May-Oct 2008 run
- FY 2009:	 Final drawing package for CERN
- FY 2010:	Await production & installation by CERN
- FY 2011:	Commissioning support
**RC1=Mechanical Prototype;**** RC2: Beam Test Prototype**

- LARP Collab Mtg 10/05/05 - V.Shiltsev

##  Collimators R&D: Status/Issues

- Adequate software in place and MANY studies have been done
- No conceptual design yet to start building prototype (expected  in October)
- Most challenging is 1st secondary downstream of primary in 450kW-10 sec scenario – expands beyond 25 um flatness
- Helpful visit of CERN team (Ralph&Co) to SLAC  steps toward a mechanical prototype
- RHIC 100 GeV p-loss map to be compared with debugged SixTrack
-  Tertiary analysis awaits input from CERN (coming)
- Irradiation studies at BNL 200 MeV linac on high gears, analysis to come

- LARP Collab Mtg 10/05/05 - V.Shiltsev

##  Accelerator Physics Activities

- E-cloud:
- Some progress toward understanding SPS e-cloud data; POSINST code development in progress (better agreement with CERN models);
- new 3D code (with Voy) shows e-cloud buildup movie; expect valuable input from RHIC’06 run where CERN ecloud detectors to be installed
- IR designs under development (see slide)
- Matched optics for both the quadrupole first and dipole first designs were developed for β* ~0.25m. Maximum quadrupole gradients of 200 T/m suffice
- possibility of doublet focusing with the dipole first design
- presented at  Arcidosso
- Beam-beam simulations – progress not obvious:
- Beam-beam 3D code numerical noise effects
- Need to explain experimental data from Tev and RHIC separation studies
- Whole activity needs to be re-energized
- ..especially important for wire compensation
- Active work on BeamBeamWire test at RHIC:
- Be installed in 2006  experiments
- Have to make sure that Wire plans fit RHIC plans

- LARP Collab Mtg 10/05/05 - V.Shiltsev

## IR Designs for the Upgrade with Triplets

**Quadrupoles first**

**Dipoles first**

- LARP Collab Mtg 10/05/05 - V.Shiltsev

##  Tevatron Pbar Lifetime vs Separation

*Helix Separation is 90%, 100%, 110% of nominal*

*PR-STAB (2005)*

- LARP Collab Mtg 10/05/05 - V.Shiltsev

##  Commisioning: CTF Report

- addresses:
- Resources missing
- MC organization within LARP
- Benefits to US
- Possibilities at 4 labs
- Funding Issues
- Living Abroad
- Recommendations
- CTF Report
- finished in July
- to Steve Peggs in Aug
- released last week

- LARP Collab Mtg 10/05/05 - V.Shiltsev

##  Benefits to the US HEP

- overall benefit if the LHC turns on rapidly and successfully:
- support of the US investment in the LHC
- secure future accelerator based HEP projects in the US
-  the information and experience gained will be available for:
- the LHC upgrades
- the ILC (e.g., on large 2K systems) and other future machines
- (possibly) for operating colliders, e.g. RHIC
- opportunities to
- train younger staff
- advance international cooperation
- conduct forefront accelerator physics R&D

- LARP Collab Mtg 10/05/05 - V.Shiltsev

##  Issues Considered 

- Funding:
-  Beam/Deliverables Commissioning – by LARP
-  Installation/Additional Hardware – not identified yet
- Schedule/Uncertainties
- HC in FY’06-07 + “tail”, BC in FY’08 and beyond
- DG letter on HC  DoE response  ? (practical steps) ?
- US side uncertainty – RHIC&TeV operations, ILC efforts
- Available Human Resources:
- CTF members approached management of corresponding labs and explained/discussed the issue
- estimated # of Eng and Phys possibly available for long (1⁄2 to 1 yr) and short (few weeks – few mos)   commitment; got blessing from management to count on them
- have preliminary lists of names

- LARP Collab Mtg 10/05/05 - V.Shiltsev

##  CTF Summary Table

- Available Res’s	    Low-Est	Optmistic
- Hardware Comm	      6 FTE      11.5 FTE
- Beam Commiss.
- 	long-term visits		8 FTE	 19 FTE
- 	short-term visitors   22
- Need an acceptable working proposal to organize US participation in HC
- Estimates include ~3 non-existant people to be hired from LARP funds
- There are very preliminary lists of names for HC & BC

- LARP Collab Mtg 10/05/05 - V.Shiltsev

##  ... e.g. like that one:

- Following R.Bailey and M.Lamont format (presented in Danford
- in Apr’05)
- So far only for FNAL people  to be continued for other labs

- LARP Collab Mtg 10/05/05 - V.Shiltsev

##  CTF Recommendations 

- We endorse the idea that LARP can be effectively used for organization of US involvement in the LHC commissioning. We recommend to form a Machine Commissioning L2 Task (MCT) within LARP for that purpose:
- the MCT to include hardware(HC – if funding resolved) and beam commissioning (BC)
- the MCT leader(s) to approach individuals in the US labs. The CTF members can help (e.g. Zisman at LBL)
- Participation in LHC hardware commissioning desirable but
- a formal Request Letter is needed from CERN followed by the US response - done
- funding and Scheduling HC to be addressed ASAP
- urgency to organize HC to become effective in FY’06

- LARP Collab Mtg 10/05/05 - V.Shiltsev

##  CTF Recommendations 

- Involvement of junior staff is important:
- Definetely, in Beam Commissioning
- May be less practical for HC
- We recommend “pairing” with more experienced people
- Short term visits to collaborate/supervise younger staff to be supported by LARP
- Remote Access Room in the US can be useful
- Full support  for the Toohig Fellowship program
- needs to be launched in 2005
- many issues not addressed yet
- To be further explored:
-  how to combine commissioning of LARP deliverables with participation in “generic” beam commissioning
- balance between short and long-term visits

- LARP Collab Mtg 10/05/05 - V.Shiltsev

## “...LHC: delivering on the promise

- US LHC Accelerator R&D Program = LARP: Fermilab + LBNL + BNL +SLAC
- Commissioning:  bring huge FNAL experience to LHC
- Technology for upgrades: once again, luminosity will be key
- FNAL will have presence at CERN but also _develop remote “operations” center at FNAL._
- Important step in the development of future “global” machines like the ILC...”

** ****from P.Oddone P5 talk 09/12/05**** **

- LARP Collab Mtg 10/05/05 - V.Shiltsev

## ... from preliminary ROC task force report (E.Gottschalk): 
 Communication hub
Serving as a (reduced) extension of CCC and CMS CR
Serves the LHC community in entire North America
Provide hard- and software necessary for participation in LHC and CMS activities
training prospective commissioners 
Role in public relations
Very visible at FNAL
Demonstrate how international projects may be carried out

-  Communication hub
- Serving as a (reduced) extension of CCC and CMS CR
- Serves the LHC community in entire North America
- Provide hard- and software necessary for participation in LHC and CMS activities
- training prospective commissioners
- Role in public relations
- Very visible at FNAL
- Demonstrate how international projects may be carried out

** ****What is that “Center” about?**** **

- LARP Collab Mtg 10/05/05 - V.Shiltsev

## Is that better than laptop PC connection?

- Shift activities are best performed from a place that has a 24/7 video/audio link to the CERN. For CMS it is expected that we will be involved in data- quality monitoring shifts. I don't know if this makes sense for LHC.
- If CERN needs to contact an experiment, this could be handled through LHC@FNAL (ie. locating the expert).
- If you are working on your laptop, and you need to talk to someone at the CCC, it is unlikely that you would be able to simply call the CCC. However, calling LHC@FNAL which is expected to have an open communications channel to the CCC could be the way to get your questions answered.
- LHC@FNAL is expected to have up-to-date hardware and software for remote operations. You may have it on your laptop as well, but you would have to make an effort to keep the software up-to-date.
-  Capabilities at LHC@FNAL are expected to include multiple, large, high-quality monitors with on-demand video and audio conferencing.
- LHC@FNAL may end up being a "trusted site" with access to information that will not be permitted from a laptop. This is not definite, but it's a possibility. We are considering an area that would be secured by a card-entry system so that qualified people can get in to access restricted information.

- LARP Collab Mtg 10/05/05 - V.Shiltsev

## Some Comments

- CERN should support it because it make an effective use of external help of visitors in machine commissioning:
- Faster help on already delivered hardware
- You invest your time and knowledge in smb, why not get more out of him/her by involving in post-visit of in-between visits analysis (access to logbooks, dataloggers, SDA, post-mortem data, etc)
- I dreamed about such a thing after visits of CERN, SLAC and BNL physicists to help to boost Run II performance
- LHC@FNAL  is probably bad-chosen name , it should be LHC@US as it will served in that fashion anyway
- We plan to take an active part in that activity to make sure it takes into account accelerator needs

- LARP Collab Mtg 10/05/05 - V.Shiltsev

##  Living Abroad Issues 

- Longer Term Visit Issues
- 6 to 12 months
- Move family/schools
- Travel/Relocation expenses
- Salary adjustment to cost of living
- Insurance
- Extra money from CERN (“Project Associate”=5kCHF/mos HC)
- Taxation
- The visits should look attractive in order to bring more people
- We explored some of these issues:
- Memo from FNAL HR
- First look into taxation issues
- Studied and agreed with US-CMS guidances
- Another memo on issues for Green Card holders
- Discussion with B.Chrisman on fast(er) foreign travel approval

- LARP Collab Mtg 10/05/05 - V.Shiltsev

## LHC Commissioning

- LARP Collab Mtg 10/05/05 - V.Shiltsev