compressor status awake technical board meeting 19 may 2015
TRANSCRIPT
Compressor status
AWAKE Technical Board meeting 19 May 2015
Technical Offers from Amplitude Technology
• February 2015“Standard” vacuum chamber D=1500 mm
• April 2015: Space limitation of CERN installation taken into account, optical design was modified “Reduced size” vacuum chamber D=1300 mm
1562.6
ø 1500
Details in EDMS document 1481751
Content of the Amplitude compressor package
The vacuum vessel with external diameter of Ø1300 mm. The support to hold the vacuum vessel (height to be defined). The internal breadboard and the support to accommodate the mechanical
mounts of the compressor. The place for four windows (input beam, output beam, diagnostic beam, and
leak). The place for the vacuum pumps (two flanges) and two flanges for the
detectors. A test report of the vacuum compatibility of the vacuum chamber will be
supplied following Amplitude Technologies quality process (inspection of the vacuum chamber with mass spectrometer for the detection of pollutant).
The installation on-site is included (two days).
The optical compressor with the optical components (including the windows) and the mechanical mounts are not included. The vacuum pump, the detectors and the controllers are not included and will be integrated by the purchaser.
New layout of vacuum vessel
Positions of beam ports
2500
D=1300
B
170
Values confirmed:
1. Chamber diameter D=1300 mm2. Distance between output beams A=6003. Position of output beam w.r.t. chamber axis B=2504. Position of input beam w.r.t. chamber axis E=170
Main beam
Diagnostic beam
C D
600
1550
250
90060
018
00
A ELeak beam
600Optical table
1000x900
200
Values to provide:1. Positions of input and
output ports C, D, F
F
Heights of beams
Height of beams and tables
H out = 975
Table height975 – 101 = 874 H in = 1042.5
Table height975-100=875
H tot < 1600
1. Height of output beam H out = 975 mm2. Height of input beam H in = 975+67.5=1042.53. Total height H tot < 1600 mm
Values confirmed:
Numbers in black – extracted from the step files received with first proposal
H Amp out = 975
Periscope HP= 67.5 mm
For 3” LIOP-TEC mount on 50 mm pedestal ( 50.8 + 50 )
Optical table 1000x900
Integration in the CERN installation updated
Compressor shifted by 200 mm
Vacuum group turned by 90o and placed in front of the turbopump
Table extended by 200 mm (2000 -> 2200)
958-200=758Power supply shifted by 200 mm
Further adjustment of the integration
Vacuum in the laser compressor for the AWAKE projectCERN Technical Specification
1. THE LASER COMPRESSOR
The laser compressor will be a component of the laser beam line of the AWAKE experiment. I t will be part of the AWAKE vacuum system. All the technical requirements have to be within the standard AWAKE specifications given in the EDMS document 1410427 except for the total outgassing rate.
2. OUTGASSI NG
The maximum total outgassing of the laser compressor, that is defined here as the vacuum vessel itself and every component and mount installed in it, should not exceed 2.5 . 10-4 mbar l s-1 after 48h of continuous pumping.
3. PUMPS
The beam tube flange on the compressor shall be a DN150CF flange with 150 mm aperture and the tank shall also be fitted with another two flanges (DN150CF and DN35CF) for extra pumping and vacuum gauges.
4. TEST AND CLEANI NG
The laser compressor is to be cleaned and leak tested by the manufacturer according to the values and requirements described in EDMS document 1410427 before delivery to CERN. A pump down curve and leak test report of the laser compressor with all the components installed is to be added to the report. The test report is to be send to CERN.
Vacuum requirements to be adjusted
AMPLITUDE CERNA leak rate of 2.8 . 10-4 mbar l.s-1 is preferable.
Outgassing of the laser compressor, that is defined here as the vacuum vessel itself and every component and mount installed in it, should not exceed 2.8 . 10-4 mbar l s-1
There should not be any reason for a high leak rate.
Seals: Amplitude Technologies’ standard vacuum chamber seals are made of FKM O-Rings
The top seal of the vessel could be with O-ring, but the other flanges shall be with metallic seal.
Tentative schedule Study in the research department to adapt the position of the window: four (4)
weeks.
Manufacturing at the supplier’s site: seventeen (17) weeks, including summer holidays.
Test at Amplitude Technologies: two (2) weeks
Packing: one (1) week.
Installation on-site: one (1) week.
Compatible with 6 months delivery order if the order is placed soon. Time for transport is not considered.
Order in June -- > Delivery in December
Hoist support structure for lifting the compressor lidSize of diffuser
more than 100mmHoist Support StructureUpdated by Jean-Louis
Supporting structures
Laser room entrance: door 1
Laser room entrance: door 2
Support for vacuum chamber 2