lhc cryogenics in ux85 and strategy against radiations n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
LHC Cryogenics in UX85 and Strategy against radiations PowerPoint Presentation
Download Presentation
LHC Cryogenics in UX85 and Strategy against radiations

Loading in 2 Seconds...

play fullscreen
1 / 17

LHC Cryogenics in UX85 and Strategy against radiations - PowerPoint PPT Presentation


  • 188 Views
  • Uploaded on

LHC Cryogenics in UX85 and Strategy against radiations. S. Claudet, LHC cryogenics LHC Radiation days, 29-30Nov’07. Content. Introduction Specificities of UX85 cavern Impacts on cryo related components Proposed actions and status Summary. Introduction to LHC Cryogenics (1/3).

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'LHC Cryogenics in UX85 and Strategy against radiations' - faith-bradford


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
lhc cryogenics in ux85 and strategy against radiations

LHC Cryogenics in UX85andStrategy against radiations

S. Claudet, LHC cryogenics

LHC Radiation days, 29-30Nov’07

content
Content
  • Introduction
  • Specificities of UX85 cavern
  • Impacts on cryo related components
  • Proposed actions and status
  • Summary

LHC Cryo in UX85 - 6th Radiation days

introduction to lhc cryogenics 1 3
Introduction to LHC Cryogenics (1/3)

8 x 18kW @ 4.5 K

1’800 sc magnets

24 km & 20 kW @ 1.8 K

36’000 t @ 1.9K

140 t He inventory

LHC Cryo in UX85 - 6th Radiation days

introduction to lhc cryogenics 2 3

Special case

Radiation as engineering constraints

Introduction to LHC Cryogenics (2/3)

Mostly sub-systems with COTS instrumentation

LHC Cryo in UX85 - 6th Radiation days

introduction to lhc cryogenics 3 3
Introduction to LHC Cryogenics (3/3)

Machine interface:

From Rad-Hard sensors to Rad-Tol electronics in sheltered areas

LHC Cryo in UX85 - 6th Radiation days

content1
Content
  • Introduction
  • Specificities of UX85 cavern
  • Impacts on cryo related components
  • Proposed actions and status
  • Summary

LHC Cryo in UX85 - 6th Radiation days

lhcb detector area

LHC cryogenics next

to experiment and in

service cavern

LHCb – detector area

Offset interaction point

Shielding wall

Electronics + CPU farm

J. Christiansen

LHC Cryo in UX85 - 6th Radiation days

ux85 simulated doses for single events
UX85: Simulated doses for single events

(C. Theis & co-workers, EDMS 735075)

LHC machine Cryogenic sub-systems

Hadron fluence (E > 20 MeV) [cm-2] at the beam level (floor 0) after 10 years of LHC operation. A safety factor of 2 was included in the normalization.

Complete technical assessment of the problem can be found in TS note 2006-001 LEA by A-L Perrot (EDMS 695442)

LHC Cryo in UX85 - 6th Radiation days

ux85 cryogenics installation

Radiation sensitive devices

Level 1

wall

cabinets

stairs

5

6

7

8

9

10

11

12

cabinets

QURC

green fence

fence

DP/PA couplers and links

(Siemens)

Corner of the

LHCb magnet

NB: all measures are in cm

Point 1

beam axis

IP

PLCs Schneider (Modicon)

Thyristors

PLCs Siemens S7-300

High frequency converters,

Magnetic level controllers.

Electro-pneumatic

valves positioners

2

1

3

4

-x

z

UX85 Cryogenics Installation

Frequent stops could be due to single events !!!

LHC Cryo in UX85 - 6th Radiation days

content2
Content
  • Introduction
  • Specificities of UX85 cavern
  • Impacts on cryo related components
  • Proposed actions and status
  • Summary

LHC Cryo in UX85 - 6th Radiation days

proposed actions
Proposed actions

endorsed by LHC project leader’s office

LHC Cryo in UX85 - 6th Radiation days

sequence of actions to be taken
Sequence of actions to be taken

(considering sensitivity of components and possible effects)

LHC Cryo in UX85 - 6th Radiation days

ux85 cryogenics installation1

Radiation sensitive devices

Level 1

wall

cabinets

stairs

5

6

7

8

9

10

11

12

cabinets

QURC

green fence

fence

DP/PA couplers and links

(Siemens)

Corner of the

LHCb magnet

NB: all measures are in cm

Point 1

beam axis

IP

PLCs Schneider (Modicon)

Thyristors

PLCs Siemens S7-300

High frequency converters,

Magnetic level controllers.

Electro-pneumatic

valves positioners

2

1

3

4

-x

z

UX85 Cryogenics Installation

Ph. 1

Ph. 1

Ph. 1

Ph. 1

Ph. 2

A-L Perrot

LHC Cryo in UX85 - 6th Radiation days

ux85 simulated doses for single events1
UX85: Simulated doses for single events

Safer zone, fluence reduced by about 200

Hadron fluence (E > 20 MeV) [cm-2] at the beam level (floor 0) after 10 years of LHC operation. A safety factor of 2 was included in the normalization.

LHC Cryo in UX85 - 6th Radiation days

slide15

Integration study

Reserved for transport

Proposal for valve actuators (Phase 2)

Proposal for CCs MB cabinets and PLCs (Phase 1)

CCs MB cabinets (NOW)

UL84

US85

LHC Cryo in UX85 - 6th Radiation days

timing of actions to be taken
Timing of actions to be taken
  • Long delivery items have been ordered last summer, delivery Jan’08
  • Project for electrical cabinets remote PLC’s to be launched
  • Implementation as foreseen after hardware commissioning of P8

LHC Cryo in UX85 - 6th Radiation days

summary
Summary
  • Follow standard procedure (as we did for all other areas with similar problems)
  • Complete technical assessment of the problem can be found in TS note 2006-001 LEA by A-L Perrot (EDMS 695442)
  • We take reasonable precautions where we know there will be a problem :
    • Most sensitive components to be treated before LHC collisions at moderate energy (long delivery items ordered)
    • Radiation monitoring system in UX85 and US85 is in place & operational to assess real situation
    • For the cold compressors (critical elements of QURCS) no solution exist but fallback solutions will be prepared in case we need them

Thanks to A-L. Perrot, T. Wijnands and P. Proudlock for help and support

LHC Cryo in UX85 - 6th Radiation days