1 / 28

The East Area beam-lines

The East Area beam-lines. Cornavin station of the PS. Time table: -- F61 (east-hall) gate 354 --. 14.00__ 14.10 __ 14.25__ 14.35__ 14.45__ 14.55__. Quick overview where is what ? our responsibility Destinations Ob-names Beam requests + external conditions

lynley
Download Presentation

The East Area beam-lines

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The East Area beam-lines Cornavin station of the PS

  2. Time table: -- F61 (east-hall) gate 354 -- 14.00__ 14.10 __ 14.25__ 14.35__ 14.45__ 14.55__ Quick overview • where is what ? • our responsibility • Destinations • Ob-names Beam requests + external conditions Different modes of operation Which elements steer the beam Adjusting the quality of the beam • positioning on target • sweep • background noise Examples

  3. Quick overview • Where is what ? • North area ( T11, T10, T9 ) • South area ( T8, T7, T7, irrad. ) • Splitter

  4. Quick overview • What is a splitter? A double knife!! or Splitter off Splitter on

  5. Quick overview • Our responsibilities • for north area • at the target F61N.MTV02 • for T8 area • at target ZT8.MTV01 • for T7 area • at F61S.BHZ02 in irradiation mode • at target ZT7.MTV01 in normal mode ZT8.MTV01 ZT7.MTV01 F61S.BHZ02 irrad T7

  6. Quick overview • Destinations • only to north • DN0 • DN1 • only to south • DS7 ( irrad.) • DS8 • shared • DNS7 ( irrad.) • DNS8

  7. Quick overview • OB names • how are they build up? XXX.DHZ02NS Suffix triple PPM Equipment name Beam Line prefix

  8. Quick overview • OB names • What is triple PPM ? One power supply with more then one CCV value per user depending on destination • How does it work ? One table for each user EASTA F61.DHZ01NS 10Amp F61.DHZ01S 1Amp F61.DHZ01M 0Amp DNS7 or DNS8 POWER SUPPLY DS7 or DS8 All other (DN0 or DN1) EASTA EASTB One table for each user EASTB F61.DHZ01NS 8Amp F61.DHZ01S 2Amp F61.DHZ01M 0Amp DNS7 or DNS8 POWER SUPPLY DS7 or DS8 All other (DN0 or DN1)

  9. Quick overview • OB names • Examples : Be careful with interpreting names ! DNS7 or DNS8 DS7 or DS8 DN0 or DN1 Not PPM User PPM Not the same!!!! DNS7 DNS8 DN0, DN1, DS7 or DS8

  10. Beam requests + external conditions All beam request and inhibits are treated as external conditions and some of them can be overwritten by software. • Requests • EASTA_RQ • EASTB_RQ our request • EASTC_RQ (with alarm program or Op-display) • ENORD_RQ • ESUD_RQ Physicists request • ET8_RQ (toggle panel in counting barracks) • Inhibits • ENORD_IN • ESUD_INH • ET8_INH Inhibits MCR (pushbuttons)

  11. Beam requests + ‘external conditions’ If destination is DNS7 If destination is DN1 Priorities EASTA_RQ EASTA_RQ + ENORD_RQ ENORD_IN ENORD_RQ ENORD_INH Beam executes & & + Beam executes ESUD_RQ ESUD_INH & If destination is DS8 EASTB_RQ If destination is DS7 + ET8_RQ ET8_INH Beam executes EASTA_RQ & + ESUD_RQ ESUD_INH Beam executes & XXX = Request from Operation display or Alarm Program XXX = Hardware request overwritable with Alarm Program XXX = Hardware inhibit form MCR

  12. Beam requests + external conditions Overwrite by software Hardware ENORD_RQ Software ENORD_RQ Requests EASTA_RQ , EASTB_RQ and EASTC_RQ only by software & Operation display Alarm program Status

  13. Beam requests + external conditions • How does it work Every destination for the East area is calculated! Judge task “FIDO” calculates the correct destination Request, external conditions and inhibits Calculated destination: (destination + suffix C) Destination and user from PLS line

  14. Beam requests + external conditions • Destination optimization This is done in the FIDO ! destination PLS request calculated DNS7 ENORD_RQ and ESUD_RQ DNS7C ENORD_RQ DN1C ESUD_RQ DS7C DN1 ESUD_RQ DN1C DS7 ENORD_RQ DS7C DS8 ET8_RQ DS8C Beware of inhibits!!

  15. Beam requests + external conditions Ejec. EAST Ejec. TOF • What about TOF TOF FTN or D3 EASTC FTN or D3 If in PLS editor “TOF_EAST” is set to 1 then this destination is treated like FTN + DNS7 like previous page. DNS7 ENORD_RQ and ESUD_RQ DNS7C ENORD_RQ DN1C ESUD_RQ DS7 Beware of inhibits!!

  16. Different modes of operation Look on the EAST AREA web page:

  17. Different modes of operation T9, T10, T11 with splitter off (DN0) (the only destination where the splitter is off) T9, T10, T11 with splitter on (DN1)

  18. Different modes of operation T7 secondary beam (DS7) T7 irradiation's (DS7) (never used up to now) T8 primary beam (DS8)

  19. Different modes of operation Why do we never use DS7 when they do irradiation in the T7 area ? This is why: Sweep DS7 Non homogeneous Splitter knives Sweep DSN7 Homogeneous

  20. Different modes of operation T7 secondary beam (DNS7) shared with T9, T10 and T11 T8 primary beam (DNS8) shared with T9, T10 and T11 (never used up to now because this decreases the beam quality for DIRAC) T7 irradiation's (DNS7) shared with T9, T10 and T11

  21. Which elements steer the beam In the East hall all the heavy work is done by non PPM elementsor elements that are (triple) PPM but very slow . The small corrections are done with triple PPM elements Which elements do the heavy job? The bendings. • In the common line (F61): • BHZ01 and BHZ02 (Beam to dump elements) • The north area (F61N): • BVT01 • The south area (F61S): • BHZ01 • BHZ02 (limited triple PPM) • The T8 area (DIRAC): • BHZ01 • BHZ02 • The T7 area: • BHZ01

  22. Which elements steer the beam good cycle bad cycle A A B B A A B B B

  23. Adjusting the quality of the beam Up to F61.MTV01 What can we adjust • with the slow extraction • PE.SMH61,PESMH57 => horizontal position on splitter • in line F61 • QFO01 =>horizontal size • What can we measure • MSCO1 =>extracted intensity • the size and position on MTV01 The first screen is seen as the separator between PS and East hall

  24. Adjusting the quality of the beam Line F61 The screens MTV02 and MTV03 • What can we adjust • DHZ.01 =>horizontal ejection error • QDE02 => vertical size on splitter • DVT01, DVT02 =>vertical position on splitter • QFO03, QDE04 =>focalization on splitter The horizontal position on both screens must be the same to avoid sending beam to heaven or hell ! MTV02 knives MTV03 DVT01 DVT02

  25. Adjusting the quality of the beam Line F61N Up to the target MTV02 • What can we adjust • QDE01, QFO2 =>focussing on target • DVT01 =>vertical position on target (see demonstration) • DHZ01 =>compensation of sweep due to energy spread in beam (controlled with GSDHZ01) • What can we measure • MSCO1 =>extracted intensity on the target • MTEL01=>number of particles after target (fluctuates when beam is badly centered) Line F61S Up to the target ZT7.MTV01 • See above in case of secondary mode • In case of irradiation we use other optics and use the sweep to get a homogeneous irradiation

  26. Adjusting the quality of the beam Background noise (dirac) Losses somewhere in the machine (especially in the beam lines) create muons that pass through the detector of DIRAC and make that they see less valid events What to do about it • center the beam in the vacuum chamber all the way up to the target • Play with the position and focus on the target to reduce the background noise Small muon detector (one tenth of a big one) Here we readout the background noise Big muon detector

  27. Examples (fill in the table)

  28. Examples

More Related