1. The East Area beam-lines
Cornavin station of the PS
Hide text with paper and say; For me the area is the

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
Point every item on the main view on the whiteboard
Mention irradiation zone 2 (use of protons that go though the target)
QUESTION: “who can tell me what a splitter is”

4. Quick overview What is a splitter? A double knife!! or Splitter off
Looks like a double septum
We can adjust the splitter gap and the current.
The bigger the gap the higher the current needed. We’re at the maximum.
Splitter on

5. Quick overview Our responsibilities for north area for T8 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
Until primary beam-and target zones. (point out on main plan)
We help people with power failures but never change values
ZT7.MTV01
F61S.BHZ02
irrad T7

6. Quick overview Destinations only to north only to south shared DN0 DN1
DS7 ( irrad.)
DS8
shared
DNS7 ( irrad.)
DNS8
Point to drawing on whiteboard
DNS8 is never used up to now.

7. Quick overview XXX.DHZ02NS OB names how are they build up?
Suffix triple PPM
Equipment name
Beam Line prefix
Point to drawing on whiteboard and make for every line an example
QUESTION: Can anyone tell me what triple PPM is

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 ?
EASTA
F61.DHZ01NS 10Amp
F61.DHZ01S Amp
F61.DHZ01M Amp
One table for each user
DNS7 or DNS8
POWER SUPPLY
DS7 or DS8
All other
(DN0 or DN1)
EASTA
EASTB
EASTB
F61.DHZ01NS 8Amp
F61.DHZ01S Amp
F61.DHZ01M Amp
One table for each user
DNS7 or DNS8
POWER SUPPLY
DS7 or DS8
All other
(DN0 or DN1)

9. Quick overview OB names Be careful with interpreting 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’
Priorities
If destination is DNS7
If destination is DN1
EASTA_RQ
EASTA_RQ
ENORD_RQ
ENORD_IN +
ENORD_RQ
ENORD_INH
Beam executes
&
& +
Beam executes
ESUD_RQ
ESUD_INH
&
If destination is DS8
If destination is DS7
EASTB_RQ +
EASTA_RQ
ET8_RQ
ET8_INH
Beam executes
&
Gate drawings are just for understanding its not the way the are connected!!
For EASTA_RQ you can also fill in EASTB_RQ or EASTC_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
&
Alarm program
Operation display
Status
Make comparison with the “aiguillage”

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
FIDO is executed two times first one cycle before to decide on beam request and external conditions to execute the normal or spare cycle.
the second time is at the beginning of the cycle to calculate the destination.
Calculated destination will be visible on Ps vistar and EAST hall vistar.

14. Beam requests + external conditions
Destination optimization
This is done in the FIDO !
destination PLS request calculated
DNS ENORD_RQ and ESUD_RQ DNS7C
ENORD_RQ DN1C
ESUD_RQ DS7C
DN ESUD_RQ DN1C
DS7 ENORD_RQ DS7C
DS ET8_RQ DS8C
Beware of inhibits!!
In this drawing no request can mean No request or a request and an inhibit.

15. Beam requests + external conditions
What about TOF
Ejec. TOF
Ejec. EAST
EASTC
FTN or D3
TOF
FTN or D3
If in PLS editor “TOF_EAST” is set to 1 then this destination is treated like FTN + DNS7 like previous page.
DNS 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:
This page a lot more then mentioned here but with this page you can see all the settings needed to do adjustments when mister KOUPTSOV arrives.

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)
QUESTION: Does anybody know why we never used DS7 up to now.

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
Probably the left and right side are not accurate.
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 elements or 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):
BHZ02
The T7 area:
QUESTION: does anybody knows which elements are the heavy ones?

22. Which elements steer the beam
good cycle bad cycle
A A B B
A A B B B
QUESTION 1: Why is the bad cycle bad?
QUESTION 2: If we have A followed by B and both have the same destination why can it still go wrong.

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
Big job is done on MTV01 after we use small corrections for the splitter

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 !
MTV knives MTV03
DVT01
DVT02
Use the thumb stick

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
Cover the text and tell that the beam sweeps.
QESTION: Why does the beam sweep?

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
Cover the text ask the question.
QUESTION: Who knows what the background noise is?
This year the procedure will probably change so we won’t go any deeper now
Muons go through anything except iron can slow them down This year they’ll install more iron shielding
tell about “corona”
Small muon detector (one tenth of a big one)
Here we readout the background noise
Big muon detector

27. Examples (fill in the table)
Cover the text ask the question.
QUESTION: Who knows what the background noise is?
This year the procedure will probably change so we won’t go any deeper now
Muons go through anything except iron can slow them down This year they’ll install more iron shielding

28. Examples Cover the text ask the question.
QUESTION: Who knows what the background noise is?
This year the procedure will probably change so we won’t go any deeper now
Muons go through anything except iron can slow them down This year they’ll install more iron shielding