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